FILE No.

A10-1902
Revision 1: Sep., 2019
Revision 2: Oct., 2019

SERVICE MANUAL
AIR-CONDITIONER
SPLIT TYPE
OUTDOOR UNIT
<SUPER DIGITAL INVERTER>
RAV-GP1101AT8-E RAV-GP1101AT8-TR
RAV-GP1101AT8J-E RAV-GP1101AT8J-TR
RAV-GP1401AT8-E RAV-GP1401AT8-TR
RAV-GP1401AT8J-E RAV-GP1401AT8J-TR
RAV-GP1601AT8-E RAV-GP1601AT8-TR
RAV-GP1601AT8J-E RAV-GP1601AT8J-TR

PRINTED IN JAPAN, Mar., 2019, TOMO

 CONTENTS
Precaution for Safety ......................................................................... 7
1. SPECIFICATIONS........................................................................ 17
1-1. Outdoor Unit ....................................................................................................................... 17
1-2. Operation Characteristic Curve ........................................................................................ 18
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS).......................... 19
2-1. Outdoor Unit ....................................................................................................................... 19
3. OUTDOOR UNIT REFRIGERATING CYCLE DIAGRAM ............ 22
4. WIRING DIAGRAM ...................................................................... 23
4-1. Outdoor Unit ....................................................................................................................... 23
5. SPECIFICATIONS OF ELECTRICAL PARTS ............................. 24
5-1. Outdoor Unit ....................................................................................................................... 24
6. REFRIGERANT R32 .................................................................... 25
6-1. Safety During Installation/Servicing ................................................................................ 25
6-2. Refrigerant Piping Installation .......................................................................................... 25
6-2-1. Piping Materials and Joints Used ...................................................................................... 25
6-2-2. Processing of Piping Materials .......................................................................................... 26
6-3. Tools .................................................................................................................................... 29
6-3-1. Required Tools ..................................................................................................................... 29
6-4. Recharging of Refrigerant ................................................................................................. 29
6-5. Brazing of Pipes ................................................................................................................. 30
6-5-1. Materials for Brazing ........................................................................................................... 30
6-5-2. Flux ....................................................................................................................................... 30
6-5-3. Brazing .................................................................................................................................. 31
6-6. Instructions for Re-use Piping of R22 or R407C ............................................................. 32
6-6-1. Basic Conditions Needed to Reuse the Existing Pipe ..................................................... 32
6-6-2. Restricted Items to Use the Existing Pipes ....................................................................... 32
6-6-3. Branching Pipe for Simultaneous Operation System ...................................................... 32
6-6-4. Curing of Pipes .................................................................................................................... 32
6-6-5. Final Installation Checks ..................................................................................................... 33
6-6-6. Handling of Existing Pipe ................................................................................................... 34
6-6-7. Recovering Refrigerant ....................................................................................................... 34
6-7. Charging additional refrigerant ........................................................................................ 34
6-7-1. [Assumed gas leak] ............................................................................................................. 34
6-7-2. [Limiting the additional charge] ......................................................................................... 34
6-7-3. [Cautions on charging additional refrigerant] .................................................................. 34
6-8. General safety precautions for using R32 refrigerant .................................................... 35
6-8-1. Recovery ............................................................................................................................... 35
6-8-2. Decommissioning ................................................................................................................ 35
6-8-3. Labelling ............................................................................................................................... 35

7. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS . 36

7-1. Outdoor Unit Control ......................................................................................................... 36
7-1-1. Print Circuit Board, MCC-1596 (Compressor IPDU) ......................................................... 36
7-1-2. Print Circuit Board, MCC-1597 (Fan Motor IPDU) ............................................................. 37
7-1-3. Print Circuit Board, MCC-1599 (Interface (CDB)) .............................................................. 38
7-1-4. Print Circuit Board, MCC-1600 (Noise Filter) .................................................................... 39
7-2. Outline of Main Controls ................................................................................................... 40

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8. TROUBLESHOOTING ................................................................. 45
8-1. Summary of Troubleshooting ............................................................................................ 45
8-2. Diagnostic Procedure for Each Check Code (Outdoor Unit) ......................................... 57
8-3. Sensor characteristics ....................................................................................................... 68
9. SETUP AT LOCAL SITE AND OTHERS ..................................... 70
9-1. Calling of check Code History .......................................................................................... 70
9-2. Group Control Operation ................................................................................................... 70
9-3. Outdoor Unit ....................................................................................................................... 72
10.ADDRESS SETUP ....................................................................... 79
10-1. Address Setup Procedure ............................................................................................... 79
10-2. Address Setup & Group Control ..................................................................................... 80
10-2-1. System Configuration ...................................................................................................... 81
10-2-2. Automatic Address Example from Unset Address (No miss-wiring) .......................... 82
10-3. Remote Controller Wiring ................................................................................................ 83
10-4. Address Setup (Manual setting from remote controller) .............................................. 84
10-5. Confirmation of Indoor Unit No. Position ...................................................................... 85
11. REPLACEMENT OF THE SERVICE P.C. BOARD MCC-1599 ... 87
12. HOW TO EXCHANGE COMPRESSOR ..................................... 88
12-1. Exchanging Procedure of Compressor (Outline) .......................................................... 88
12-2. Exchange of Compressor ................................................................................................ 88
13. DETACHMENTS ........................................................................ 89
13-1. Outdoor Unit ..................................................................................................................... 89
14. EXPLODED VIEWS AND PARTS LIST ................................... 101
14-1. Outdoor Unit ................................................................................................................... 101
14-2. Inverter Assembly .......................................................................................................... 107

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Original instruction
Please read carefully through these instructions including important information which complies with the
“Machinery Directive” (Directive 2006/42/EC), and ensure that you understand them.
Some of the details provided in these instructions differ from the service manual, and the instructions provided
here take precedence.

Generic Denomination: Air Conditioner

Definition of Qualified Installer or Qualified Service Person

The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified
service person.
When any of these jobs is to be done, ask a qualified installer or qualified service person to do them.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge
described in the table below.

Agent Qualifications and knowledge which the agent must have

Qualified • The qualified installer is a person who installs, maintains, relocates and removes the air
installer (∗1) conditioners made by Toshiba Carrier Corporation.
He or she has been trained to install, maintain, relocate and remove the air conditioners made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by
an individual or individuals who have been trained and is thus thoroughly acquainted with the
knowledge related to these operations.
• The qualified installer who is allowed to do the electrical work involved in installation, relocation
and removal has the qualifications pertaining to this electrical work as stipulated by the local laws
and regulations, and he or she is a person who has been trained in matters relating to electrical
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has
been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved in
installation, relocation and removal has the qualifications pertaining to this refrigerant handling
and piping work as stipulated by the local laws and regulations, and he or she is a person who
has been trained in matters relating to refrigerant handling and piping work on the air conditioners
made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such
matters by an individual or individuals who have been trained and is thus thoroughly acquainted
with the knowledge related to this work.
• The qualified installer that is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively,
he or she has been instructed in such matters by an individual or individuals who have been
trained and is thus thoroughly acquainted with the knowledge related to this work.
Qualified service • The qualified service person is a person who installs, repairs, maintains, relocates and removes
person (∗1) the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install,
repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to these operations.
• The qualified service person who is allowed to do the electrical work involved in installation,
repair, relocation and removal has the qualifications pertaining to this electrical work as stipulated
by the local laws and regulations, and he or she is a person who has been trained in matters
relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to do the refrigerant handling and piping work
involved in installation, repair, relocation and removal has the qualifications pertaining to this
refrigerant handling and piping work as stipulated by the local laws and regulations, and he or
she is a person who has been trained in matters relating to refrigerant handling and piping
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained
and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters
relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.

–4–
Definition of Protective Gear
When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective
gloves and ‘safety’ work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the
special work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.

Work undertaken Protective gear worn

Protective gloves
All types of work
“Safety” working clothing

Gloves to provide protection for electricians

Electrical-related work Insulating shoes
Clothing to provide protection from electric shock

Work done at heights (50 cm or more) Helmets for use in industry

Transportation of heavy objects Shoes with additional protective toecap

Repair of outdoor unit Gloves to provide protection for electricians

The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.

[Explanation of indications]

Indication Explanation

Indicates contents assumed that an imminent danger causing a death or serious injury of
DANGER the repair engineers and the third parties when an incorrect work has been executed.

Indicates possibilities assumed that a danger causing a death or serious injury of the
WARNING repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.

Indicates contents assumed that an injury or property damage (∗) may be caused on the
CAUTION repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.

∗ Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet

[Explanation of illustrated marks]

Mark Explanation

Indicates prohibited items (Forbidden items to do)

The sentences near an illustrated mark describe the concrete prohibited contents.

Indicates mandatory items (Compulsory items to do)

The sentences near an illustrated mark describe the concrete mandatory contents.

Indicates cautions (Including danger/warning)

The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.

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Warning Indications on the Air Conditioner Unit
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions.
If removing the label during parts replace, stick it as the original.

Warning indication Description

WARNING WARNING
ELECTRICAL SHOCK HAZARD
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies
Disconnect all remote electric before servicing.
power supplies before servicing.

WARNING WARNING
Moving parts.
Moving parts.
Do not operate unit with grille removed.
Do not operate unit with grille removed.
Stop the unit before the servicing.
Stop the unit before the servicing.

CAUTION CAUTION
High temperature parts. High temperature parts.
You might get burned when removing You might get burned when removing this
this panel. panel.

CAUTION CAUTION
Do not touch the aluminum fins of the unit.
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
Doing so may result in injury.

CAUTION
CAUTION
BURST HAZARD BURST HAZARD
Open the service valves before the
Open the service valves before the operation,
operation, otherwise there might be the
otherwise there might be the burst.
burst.

–6–
Precaution for Safety
The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the
power circuit or an incomplete installation may cause an electric shock or fire.

DANGER
Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit
breaker to the OFF position. Otherwise, electric shocks may result.
Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set the
circuit breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact
with the interior parts.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to remove the intake grille
Turn off of the indoor unit or service panel of the outdoor unit and do the work required.
breaker.
Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the circuit
breaker to the OFF position, and place a “Work in progress” sign on the circuit breaker.
When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF without
fail, and place a “Work in progress” sign near the circuit breaker before proceeding with the work.
Do not turn ON the circuit breaker under the condition of removing a cabinet, a panel, etc.
Otherwise, it leads to an electric shock with a high voltage, resulting in loss of life.

Prohibition

(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”

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 WARNING
Before starting to repair the air conditioner, read carefully through the Service Manual, and repair
the air conditioner by following its instructions.
Only qualified service person (∗1) is allowed to repair the air conditioner.
Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury,
water leaks and/or other problems.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to carry out the electrical
work of the air conditioner.
Under no circumstances must this work be done by an unqualified individual since failure to carry
out the work properly may result in electric shocks and/or electrical leaks.
Wear protective gloves and safety work clothing during installation, servicing and removal.
When connecting the electrical wires, repairing the electrical parts or undertaking other electrical
jobs, wear gloves to provide protection for electricians, insulating shoes and clothing to provide
protection from electric shocks.
Failure to wear this protective gear may result in electric shocks.
Use wiring that meets the specifications in the Installation Manual and the stipulations in the local
regulations and laws.
Use of wiring which does not meet the specifications may give rise to electric shocks, electrical
leakage, smoking and/or a fire.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to undertake work at
General heights using a stand of 50 cm or more.
When working at heights, use a ladder which complies with the ISO 14122 standard, and follow
the procedure in the ladder’s instructions.
Also wear a helmet for use in industry as protective gear to undertake the work.
When working at heights, put a sign in place so that no-one will approach the work location,
before proceeding with the work.
Parts and other objects may fall from above, possibly injuring a person below.
Do not touch the aluminum fin of the outdoor unit.
You may injure yourself if you do so. If the fin must be touched for some reason, first put on
protective gloves and safety work clothing, and then proceed.
Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall off the outdoor unit and result in injury.
When transporting the air conditioner, wear shoes with additional protective toecap.
When transporting the air conditioner, do not hold the bands around the packing carton.
You may injure yourself if the bands should break.
This air conditioner has passed the pressure test as specified in IEC 60335-2-40 Annex EE.
When you access inside of the electric cover to repair electric parts, wait for about five minutes
after turning off the breaker. Do not start repairing immediately. Otherwise you may get electric
shock by touching terminals of high-voltage capacitors. Natural discharge of the capacitor takes
Electric
shock hazard about five minutes.
Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair,
or removal work is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
When checking the electric parts, removing the cover of the electric parts box of Indoor Unit and/
or front panel of Outdoor Unit inevitably to determine the failure, put a sign “Do not enter” around
the site before the work. Failure to do this may result in third person getting electric shock.
Prohibition Before operating the air conditioner after having completed the work, check that the electrical
parts box cover of the indoor unit and service panel of the outdoor unit are closed, and set the
circuit breaker to the ON position. You may receive an electric shock if the power is turned on
without first conducting these checks.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the
electrical parts with the electrical parts box cover of one or more of the indoor units and the
service panel of the outdoor unit removed in order to find out exactly where the trouble lies, wear
insulated heat-resistant gloves, insulated boots and insulated work overalls, and take care to
Stay on avoid touching any live parts.
protection You may receive an electric shock if you fail to heed this warning. Only qualified service person
(∗1) is allowed to do this kind of work.
(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”

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 WARNING
Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of
the main unit, otherwise an electric shock is caused when a leak occurs. If the earth wire is not
correctly connected, contact an electric engineer for rework.
After completing the repair or relocation work, check that the earth wires are connected properly.
Check earth
wires. Be sure to connect earth wire. (Grounding work) Incomplete earth causes an electric shock.
Do not connect earth wires to gas pipes, water pipes, and lightning rods or earth wires for
telephone wires.
Do not modify the products. Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.

Prohibition of
modification.
When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the
specifications given in the Service Manual (or use the parts contained on the parts list in the
Service Manual).
Use of any parts that do not satisfy the required specifications may give rise to electric shocks,
Use specified smoking and/or a fire.
parts. Replace components only with parts specified by the manufacturer. Other parts may result
in the ignition of refrigerant in the atmosphere due to the refrigerant leak.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the
electrical parts with the electrical parts box cover of one or more of the indoor units and the
service panel of the outdoor unit removed in order to find out exactly where the trouble lies, place
Do not bring "Keep out" signs around the work site before proceeding.
a child close to Third-party individuals may enter the work site and receive electric shocks if this warning is not
the equipment. heeded.
Connect the cut-off lead wires with crimp contact, etc. put the closed end side upward and then
apply a water-cut method, otherwise a leak or production of fire is caused at the users’ side.

Insulating
measures
When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because
the oil that coats the pipes may otherwise burn.
When repairing the refrigerating cycle, take the following measures.
1) Be attentive to fire around the cycle.
When using a gas stove, etc. be sure to put out fire before work; otherwise the oil mixed with
refrigerant gas may catch fire.
No fire
2) Do not use a brazing in the closed room.
When using it without ventilation, carbon monoxide poisoning may be caused.
3) Do not bring inflammable material around to the refrigerant cycle; otherwise fire of the brazing
may catch the inflammable material.

–9–
 The refrigerant used by this air conditioner is the R32.
Check the used refrigerant name and use tools and materials of the parts, which match with it.
For the products, which use R32 refrigerant, the refrigerant name is indicated at a position on
the outdoor unit where is easy to see.
To prevent miss charging, the route of the service port is changed from one of the former R22.
Be careful for miss charging since a charging port of R32 is the same diameter as that of R410A.
Do not use any refrigerant different from the one specified for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may
result in a failure or explosion of the product or an injury to your body.
For an air conditioner, which uses R32, never use other refrigerant than R32.
For an air conditioner, which uses other refrigerant (R22, R410A etc.), never use R32.
If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating
cycle and an injur y due to breakage may be caused.
If the different type of refrigerants are mixed in, be sure to recharge the refrigerant
Do not charge refrigerant additionally.
If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the
refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over
Refrigerant
the specified standard amount is charged and an abnormal high pressure is applied to the inside
of the refrigerating cycle resulted in cause of breakage or injury.
Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute
vacuuming, and then newly recharge the specified amount of liquid refrigerant.
In this time, never charge the refrigerant over the specified amount.
When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other
than R32 into the specified refrigerant.
If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating
cycle resulted in cause of injury due to breakage.
After the installation work, confirm that refrigerant gas does not leak. If refrigerant gas leaks into
the room and flows near a fire source, such as a cooking range, noxious gas may be generated.
Never recover the refrigerant into the outdoor unit.
When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device.
The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as
breakage or injury is caused.
After repair work, surely assemble the disassembled parts, and connect and lead the removed
wires as before.
Perform the work so that the cabinet or panel does not catch the inner wires.
Assembly/ If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is
Cabling caused at user’s side.
After the work has finished, be sure to use an insulation tester set (500V MΩ) to check the
resistance is 1MΩ or more between the charge section and the non-charge metal section
(Earth position).
Insulator If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
check
When the refrigerant gas leaks during work, execute ventilation.
If the refrigerant gas touches to a fire, it may generate noxious gases, causing a fire.
A case of leakage of the refrigerant and the closed room full with gas is dangerous because a
shortage of oxygen occurs. Be sure to execute ventilation.
Ventilation If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, it may generate noxious gases,
causing a fire.

– 10 –
 When the refrigerant gas leaks, find out the leaked position and repair it surely.
If the leaked position cannot be found out and the repair work is interrupted, pump-down and
tighten the service valve, otherwise the refrigerant gas may leak into the room.
When gas touches to fire such as fan heater, stove or cooking stove, it may generate noxious
gases, causing a fire though the refrigerant gas itself is innocuous.
When installing equipment, which includes a large amount of charged refrigerant in a sub-room,
it is necessary that the concentration does not the limit even if the refrigerant leaks.
If the refrigerant leaks and exceeds the limit concentration, an accident of shortage of oxygen is
caused.
Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which
Compulsion may result in refrigerant leakage.
Nitrogen gas must be used for the airtight test.
The charge hose must be connected in such a way that it is not slack.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or
fire is caused.
Install the outdoor unit properly in a location that is durable enough to support the weight of the
outdoor unit. Insufficient durability may cause the outdoor unit to fall, which may result in injury.
Once the repair work has been completed, check for refrigerant leaks, and check the insulation
resistance and water drainage.
Then perform a trial run to check that the air conditioner is running properly.
After repair work has finished, check there is no trouble. If check is not executed, a fire, electric
shock or injury may be caused. For a check, turn off the power breaker.
Check after
repair After repair work (installation of front panel and cabinet) has finished, execute a test run to check
there is no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused. Before test run, install the front
panel and cabinet.
Check the following matters before a test run after repairing piping.
• Connect the pipes surely and there is no leak of refrigerant.
• The valve is opened.
Do not Running the compressor under condition that the valve closes causes an abnormal high
operate the pressure resulted in damage of the parts of the compressor and etc. and moreover if there is
unit with the leak of refrigerant at connecting section of pipes, the air is suctioned and causes further
valve closed. abnormal high pressure resulted in burst or injury.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air
conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual
since a fire, electric shocks, injury, water leakage, noise and/or vibration may result.
Check the following items after reinstallation.
Check after 1) The earth wire is correctly connected.
reinstallation 2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
When the service panel of the outdoor unit is to be opened in order for the compressor or the
area around this part to be repaired immediately after the air conditioner has been shut down, set
the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the
service panel.
If you fail to heed this warning, you will run the risk of burning yourself because the compressor
pipes and other parts will be very hot to the touch. In addition, before proceeding with the repair
work, wear the kind of insulated heat-resistant gloves designed to protect electricians.
When the service panel of the outdoor unit is to be opened in order for the fan motor, reactor,
Cooling check inverter or the areas around these parts to be repaired immediately after the air conditioner has
been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes
before opening the service panel.
If you fail to heed this warning, you will run the risk of burning yourself because the fan motor,
reactor, inverter heat sink and other parts will be very hot to the touch.
In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant
gloves designed to protect electricians.
(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”

– 11 –
 Only a qualified installer (∗1) or qualified service person (∗1) is allowed to install the air
conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
Before starting to install the air conditioner, read carefully through the Installation Manual, and
follow its instructions to install the air conditioner.
Do not install the air conditioner in a location that may be subject to a risk of exposing to a
combustible gas.
If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.
When transporting the air conditioner, use a forklift truck and when moving the air conditioner by
Installation hand, move the unit with 4 people.
Install a circuit breaker that meets the specifications in the Installation Manual and the stipulations
in the local regulations and laws.
Install the circuit breaker where it can be easily accessed by the agent.
Do not place any combustion appliance in a place where it is directly exposed to the wind of air
conditioner, otherwise it may cause imperfect combustion.
When carrying out the pump-down work shut down the compressor before disconnecting the
refrigerant pipe. Disconnecting the refrigerant pipe with the service valve left open and the
compressor still operating will cause air, etc. to be sucked in, raising the pressure inside the
refrigeration cycle to an abnormally high level, and possibly resulting in rupture, injury, etc.

Compulsion When removing the brazing parts of suction and discharge pipe for the compressor, remove them
at the place ventilated well after recovering the refrigerant. Improper recovering may cause the
spurt of the refrigerant and the refrigeration oil, causing an injury.
Do not vent gases to the atmosphere.
Venting gases to the atmosphere is prohibited by the law.

Prohibition

(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”

CAUTION
Ensure wearing of gloves when performing any work in order to avoid injury from parts, etc.
Failure to wear the proper protective gloves cause an injury due to the parts, etc.

Wearing of
gloves

When performing the brazing work, check whether refrigerant leaks or remains.
If the leakage refrigerant gas touches a fire source, it may generate noxious gases, causing a fire.

Confirm

Explanations given to user

• If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit
breaker to the OFF position, and contact a qualified service person to have the repairs done.
Do not set the circuit breaker to the ON position until the repairs are completed.

Relocation
• Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air conditioner.
It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
• When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant
pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will
cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level,
and possibly resulting in rupture, injury, etc.
(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”

– 12 –
Declaration of Conformity
Manufacturer: TOSHIBA CARRIER CORPORATION
336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN

TCF holder: TOSHIBA CARRIER EUROPE S.A.S

Route de Thil
01120 Montluel FRANCE

Hereby declares that the machinery described below:

Generic Denomination: Air Conditioner

Model/type: RAV-GP1101AT8-E, RAV-GP1401AT8-E, RAV-GP1601AT8-E

RAV-GP1101AT8J-E, RAV-GP1401AT8J-E, RAV-GP1601AT8J-E
RAV-GP1101AT8-TR, RAV-GP1401AT8-TR, RAV-GP1601AT8-TR
RAV-GP1101AT8J-TR, RAV-GP1401AT8J-TR, RAV-GP1601AT8J-TR

Commercial name: Super Digital Inverter Series Air Conditioner

Complies with the provisions of the “Machinery Directive” (Directive 2006/42/EC) and the regulations
transposing into national law

Note: This declaration becomes invalid if technical or operational modifications are introduced without the
manufacturer’s consent.

Specifications
Sound pressure level (dB(A))
Model Weight (kg)
Cooling Heating
RAV-GP1101AT8-E ∗ ∗ 95
RAV-GP1401AT8-E ∗ ∗ 95
RAV-GP1601AT8-E ∗ ∗ 95
RAV-GP1101AT8J-E ∗ ∗ 95
RAV-GP1401AT8J-E ∗ ∗ 95
RAV-GP1601AT8J-E ∗ ∗ 95
RAV-GP1101AT8-TR ∗ ∗ 95
RAV-GP1401AT8-TR ∗ ∗ 95
RAV-GP1601AT8-TR ∗ ∗ 95
RAV-GP1101AT8J-TR ∗ ∗ 95
RAV-GP1401AT8J-TR ∗ ∗ 95
RAV-GP1601AT8J-TR ∗ ∗ 95
∗ Under 70 dB(A)

– 13 –
Refrigerant R32
This air conditioner adopts a new HFC type refrigerant (R32) which does not deplete the ozone layer.

1. Safety Caution Concerned to Refrigerant R32

Be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the
refrigerating cycle of the air conditioner with refrigerant R32 during installation work or service work.
If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident.
Use the tools and materials exclusive to R32 to purpose a safe work.

2. Safety and Cautions on Installation/Service

<Safety items>
When gas concentration and ignition energy are happened at the same time, R32 has a slight possibility of
burning. Although it will not ignite under normal work environment conditions, be aware that the flame
spreads if ignition should occur.
It is necessary to carry out installation/servicing safely while taking the following precautions into
consideration.
1) Never use refrigerant other than specified refrigerant (R32) in an air conditioner which is designed to
operate with the specified refrigerant (R32).
If other refrigerant than R32 is used, it may cause personal injury, etc. by a malfunction, a fire, a rupture.
2) Since R32 is heavier than air, it tends to accumulate at the bottom (near the floor).
Ventilate properly for the working environment to prevent its combustion.
Especially in a basement or a closed room where the high risk of the accumulation is ventilate the room
with a local exhaust ventilator.
If refrigerant leakage is confirmed in the room or the place where the ventilation is insufficient, do not
work until the proper ventilation is performed and the work environment is improved.
3) When performing brazing work, be sure to check for leakage refrigerant or residual refrigerant.
If the leakage refrigerant comes into contact with fire, a poisonous gas may occur or it may cause a fire.
Keep adequate ventilation during the work.
4) When refrigerant gas leaks during work, execute ventilation. If the leakage refrigerant comes into contact
with a fire, a poisonous gas may occur or it may cause a fire.
5) In places where installing / repairing air-conditioning equipment, etc., keep the source of ignition such as
gas combustion equipment, petroleum combustion equipment, electric heater etc. away. Do not smoke in
the place.
6) When installing or removing an air conditioner, do not mix air in the refrigerant cycle.
If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating cycle,
causing injury due to the breakage.
7) After installation work complete, confirm that refrigerant gas is not leaking on the flare connection part or
others. If leaked refrigerant comes to contact with a fire, toxic gas may occur, causing a fire.
8) Perform the installation work and re-installation according to the installation manual.
Pay attention especially to the area of application. Improper installation may cause refrigeration trouble,
water leakage, electric shock, or fire etc.
9) Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a
qualified air conditioner technician or electrician.
Improper repair may result in water leakage, electric shock and fire, etc.
10) Carry out the airtight test with nitrogen at a specified pressure. Do not use oxygen or acetylene gas
absolutely as it may cause an explosion.
11) Always carry a refrigerant leakage detection sensor during the work and work while checking that no
refrigerant leaks around working environment.
12) If the leakage refrigerant comes into contact with fire, it may cause a fire.
Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

– 14 –
<Caution items>
1) The opposite side dimension of the air-conditioner’s flared nut using R32 and the shape of the charge
port are the same as those of R410A.
2) Be careful not to charge refrigerant by mistake. Should the different type of refrigerant mix in, be sure to
recharge the refrigerant.
3) Do not mix the other refrigerant or refrigerating oil with the refrigerant.
4) Since the pressure of R32 is 1.6 times higher than that of the former refrigerant (R22), use tools and
parts with high pressure resistance specification similar to R410A.
5) In the installation time, use clean pipe materials and work with great attention so that water and others
do not mix in because pipes are affected by impurities such as water, oxide film, oil, etc. Use the clean
pipes. Be sure to braze while flowing nitrogen gas in the pipe. (Never use gas other than nitrogen gas.)
6) For the earth protection, use a vacuum pump for air purge.
7) R32 refrigerant is Single-component refrigerant that does not change its composition.
Although it is possible to charge the refrigerant with either liquid or gas, charge it with liquid.

3. Pipe Materials
For the refrigerant pipes, copper pipe and joints are mainly used.
It is necessary to select the most appropriate pipes to conform to the standard.
Use clean pipes or joints to which little impurities adhere.

1) Copper pipe

<Piping>
The pipe thickness, flare-finishing size, flare nut and others differ according to a refrigerant type.
When using a long copper pipe for R32, it is recommended to select “Copper or copper-base pipe without
seam” and one with bonded oil amount 40mg/10m or less.
Also do not use crushed, deformed, discolored (especially inside) pipes.
(Impurities cause clogging of expansion valves and capillary tubes.)
<Flare nut>
Use the flare nuts which are attached to the air conditioner unit.

Be sure to select the pipes with copper thickness in the table below since the pressure of an air conditioner
using R32 is higher than that of R22.

Nominal Outer Thickness (mm) Make sure not to use a thin copper
diameter diameter (mm) R410A or R32 pipe such as 0.7 mm copper
thickness in the market.
1/2 6.4 0.80
3/8 9.5 0.80
1/2 12.7 0.80
5/8 15.9 1.00

2) Joint
The flare joint and socket joint are used for joints of the copper pipe.
The joints are rarely used for installation of the air conditioner.
However clear impurities when using them.

– 15 –
4. Tools

: R410A tools available

: Partly unavailable, : R410A tools unavailable
Installation/service tools Applicability to R32 air Applicability to R22 air
No. Use
Tools / Equipment specification conditioner or not conditioner or not
1 Flare tool Clutch type Pipe flaring
Copper pipe gauge for Flaring by
2 adjusting projection — conventional —
margin flare tool

3 Torque wrench — Tightening of

flare nut
Port size Evacuating,
4 Gauge manifold 1/2"-20UNF refrigerant Note 2
(5/16" Flare) charge, run
check, etc.
5 Charge hose High-voltage
6 Vacuum pump — Vacuum Note 3 Connection diameter
drying 1/2"-20UNF(5/16" Flare) 1/4"
7 Vacuum pump adapter — Vacuum Note 4 Connection diameter
drying 1/2"-20UNF(5/16" Flare) 1/4"
8 Electronic balance for For 10 kg or Refrigerant
refrigerant charging 20 kg cylinder charge
9 Leakage detector — Gas leakage Note 5 Note 5
check
10 Refrigerant cylinder — Refrigerant Note 6
charge
11 Refrigerant recovery Exclusive for Refrigerant Note 7
cylinder R32 recovery container
12 Refrigerant recovery — Refrigerant Note 8 Connection diameter
device recovery device 1/4"

Note 1 When flaring is carried out for R410A or R32 using the conventional flare tools, adjustment of
projection margin is necessary. For this adjustment, a copper pipe gauge, etc. is necessary.
Note 2 When saturation temperature is described, the gauge manifold differs for R410A and R32.
If saturation temperature reading is required, special tools exclusive for R32 are required.
Note 3 Since R32 has a slight possibility of burning, be sure to use the tools corresponding to R32.
Note 4 Like R410, a Vacuum pump adapter needs installing to prevent a Vacuum pump oil (mineral oil) from
flowing backward into the Charge hose. Mixing of the Vacuum pump oil into R32 refrigerant may cause
a trouble such as generation of sludge, clogging of capillary, etc.
Note 5 Be sure to use those tools after confirming they correspond to each refrigerant.
Note 6 For a refrigerant cylinder exclusive for R32, the paint color (or label color) of the cylinder is set to the
specified color (light blue) together with the indication of the refrigerant name.
Note 7 Although the container specification is the same as R410A, use a recovering container exclusive for
R32 to avoid mixing with other refrigerants.
Note 8 Be careful for miss charging of the refrigerant during work. Miss charging of the refrigerant type may
cause not only damage of the equipment but also a fire etc.

General tools
In addition to the above exclusive tools, the following equipment is necessary as the general tools.
1) Pipe cutter 6) Spanner or Adjustable wrench
2) Reamer 7) Hole core drill
3) Pipe bender 8) Tape measure
4) Level vial 9) Metal saw
5) Screwdriver (+, –)
Also prepare the following equipment for other installation method and run check.
1) Clamp meter 3) Insulation resistance tester (500VMΩ)
2) Thermometer 4) Electroscope

– 16 –
 1. SPECIFICATIONS
1-1. Outdoor Unit
1101AT8(J)-E 1401AT8(J)-E 1601AT8(J)-E
Model Outdoor unit RAV-GP
1101AT8(J)-TR 1401AT8(J)-TR 1601AT8(J)-TR
3 phase 380-415, 50Hz
Power supply
(Power exclusive to outdoor is required)
Type Hermetic compressor
Compressor Motor (kW) 3.75 3.75 3.75
Pole 4 4 4
Refrigerant charged (kg) 2.6 2.6 2.6
Refrigerant control Pulse motor valve
Max (m) 75 75 75
Min (m) 3 3 3
Pipe
Height Outdoor lower (m) 30 30 30
Difference Outdoor Height 30 30 30
Height (m) 1,340 1,340 1,340
Outer dimension Width (m) 900 900 900
Depth (m) 320 320 320
Silky shade
Appearance
(Munsell 1Y8.5/0.5)
Total weight (kg) 95 95 95
Heat exchanger Finned tube
Fan Propeller fan
Fan unit Standard air flow (m3/min) 101 103 103
Motor (W) 100+100 100+100 100+100
Connecting pipe Gas side (mm) 15.9 15.9 15.9
(Outdoor unit side) Liquid side (mm) 9.5 9.5 9.5
Sound pressure level Cooling/Heating (dB-A) 49/50 51/52 51/53
Sound power level Cooling/Heating (dB-A) 66/67 68/69 68/70
Outside air temperature cooling (°C) 46 to -15°C
Outside air temperature heating (°C) 15 to -20°C

– 17 –
1-2. Operation Characteristic Curve
• Operation characteristic curve, 50Hz <Super Digital Inverter>

<Cooling> <Heating>
10
15
9 GP160
SP160 14
13
8
12

7 11
10
6
Current (A)

Current (A)
GP140
SP140 8
5
7
4 SP110 6
GP110
5
3
4
• Conditions • Conditions
2 Indoor : DB27˚C/WB19˚C 3 Indoor : DB20˚C
Outdoor : DB35˚C Outdoor : DB7˚C/WB6˚C
Air flow : High 2 Air flow : High
1 Pipe length : 7.5m Pipe length : 7.5m
400V, 50Hz (3 phase) 1 400V, 50Hz (3 phase)
0 0
0 10 20 30 40 50 60 70 80 0 10 20 30 40 50 60 70 80 90 100 110
Compressor speed (rps) Compressor speed (rps)

• Capacity variation ratio according to temperature

<Cooling> <Heating>
105 120

100 110

95 100

90
90
80
Capacity ratio (%)
Capacity ratio (%)

85
70
80
60
75
50
70
40
65
30
60 20
• Conditions • Conditions
Indoor : DB27˚C/WB19˚C Indoor : DB20˚C
55 Indoor air flow : High 10 Indoor air flow : High
Pipe length : 7.5m Pipe length : 7.5m
50 0
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10

Outdoor temp. (˚C) Outdoor temp. (˚C)

– 18 –
 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)
2-1. Outdoor Unit
RAV-GP1101AT8(J)-E, -TR RAV-GP1401AT8(J)-E, -TR RAV-GP1601AT8(J)-E, -TR

– 19 –
RBC-TWP30E2, RBC-TWP50E2 (Simultaneous Twin)

Inner diameter DIA C

B
Inner Inner
diameter DIA D diameter DIA D

(Units: mm)
Model (RBC-) A B C D

Liquid side 36 14 9.5 6.4

TWP30E2
Gas side 43 23 15.9 12.7

Liquid side 34 14 9.5 9.5

TWP50E2
Gas side 44 21 15.9 15.9

– 20 –
RBC-TRP100E (Simultaneous Triple)
<Gas side>
Header assembly
(Units: mm)
300

100 80 80 Inner diameter

DIA 15.9
Inner diameter DIA 25.4

100
1 pc.

<Liquid side>
Branch pipe assembly

100 35 80 80 Inner diameter

DIA 9.52
Inner diameter DIA 12.7

100

1 pc.
Insulator

Gas side socket Liquid side socket

DIA 15.9
DIA 12.7 DIA 9.5
DIA 6.4
12
10

46

9
28

24

26

DIA 15.9 DIA 25.4 DIA 9.5 DIA 12.7

(External (External (External (External
diameter) diameter) diameter) diameter)

3 pcs. 1 pc. 3 pcs. 1 pc.

– 21 –
 3. OUTDOOR UNIT REFRIGERATING CYCLE DIAGRAM

TO sensor
TS sensor

PMV
TL sensor
Pressure
switch
Strainer
P

Check joint TE sensor

Capillary
Cooling: High pressure DIA 4 × DIA 3 (6 pcs.)
Heating: Low pressure

Heat exchanger
TD sensor DIA 8, 2 rows, 52 stages Distributor Refrigerant pipe
FP1.45, flat fin at liquid side DIA 9.5
Packed valve
In cooling operation
In heating operation Refrigerant pipe
at gas side DIA 15.9
Strainer Ball valve

Muffler Cooling: Low pressure

DIA 25 × L180 Heating: High pressure

DIA 25 × L210
Accumulator Rotary compressor
(2500cc) (RX420A3F-27M)

RAV-GP1101 series
Pressure Pipe surface temperature
Compressor Indoor/outdoor
(Mpa) (kg/cm2G) Discharge Suction Indoor heat Outdoor heat drive revolution Indoor fan temp. condition
exchanger exchanger
frequency (rps)
Pd Ps Pd Ps (TD) (TS) (TC) (TL) (TE) Indoor Outdoor
Standard 2.3 1.1 23.5 11.7 80.2 12.9 11.0 44.6 36.9 36.6 HIGH 27/19 35/-
Cooling Overload 3.1 1.5 32.0 14.8 67.0 17.0 16.0 48.0 47.0 35.4 HIGH 32/24 46/-
Low load 2.2 0.7 22.6 7.4 70.0 2.0 1.0 36.0 16.0 33.0 LOW 18/15.5 -15/-
Standard 2.5 0.8 25.9 8.2 87.2 3.2 41.0 7.6 3.0 40.2 HIGH 20/- 7/6
Heating Overload 3.4 1.4 35.1 13.8 77.0 20.0 53.0 22.0 19.0 26.4 LOW 30/- 24/18
Low load 2.0 0.2 20.0 1.7 78.0 -25.0 31.0 -10.0 -23.0 90.6 HIGH 15/- -20/-

RAV-GP1401 series
Pressure Pipe surface temperature
Compressor Indoor/outdoor
(Mpa) (kg/cm2G) Discharge Suction Indoor heat Outdoor heat drive revolution Indoor fan temp. condition
exchanger exchanger
frequency (rps)
Pd Ps Pd Ps (TD) (TS) (TC) (TL) (TE) Indoor Outdoor
Standard 2.4 1.0 24.0 10.6 89.7 9.3 8.0 46.8 37.6 50.4 HIGH 27/19 35/-
Cooling Overload 3.3 1.3 34.0 13.4 73.0 18.0 17.0 51.0 50.0 42.0 HIGH 32/24 46/-
Low load 2.2 0.7 22.7 7.5 71.0 3.0 2.0 37.0 16.0 33.0 LOW 18/15.5 -15/-
Standard 2.7 0.8 27.8 8.2 90.8 1.5 44.0 7.6 2.7 51.6 HIGH 20/- 7/6
Heating Overload 3.3 1.2 34.1 12.3 76.0 17.0 52.0 20.0 17.0 26.4 LOW 30/- 24/18
Low load 1.9 0.2 19.5 1.7 77.0 -25.0 30.0 -10.0 -23.0 90.6 HIGH 15/- -20/-

RAV-GP1601 series
Pressure Pipe surface temperature
Compressor Indoor/outdoor
(Mpa) (kg/cm2G) Discharge Suction Indoor heat Outdoor heat drive revolution Indoor fan temp. condition
exchanger exchanger
frequency (rps)
Pd Ps Pd Ps (TD) (TS) (TC) (TL) (TE) Indoor Outdoor
Standard 2.4 1.0 24.1 10.3 98.6 8.7 7.0 48.4 38.3 61.2 HIGH 27/19 35/-
Cooling Overload 3.4 1.2 35.0 12.2 77.0 19.0 18.0 54.0 53.0 48.6 HIGH 32/24 46/-
Low load 2.2 0.8 22.7 7.6 72.0 4.0 3.0 37.0 17.0 33.0 LOW 18/15.5 -15/-
Standard 3.0 0.8 30.5 8.2 100.9 0.7 48.0 7.6 2.4 60.0 HIGH 20/- 7/6
Heating Overload 3.2 1.2 33.0 12.3 75.0 17.0 51.0 20.0 17.0 26.4 LOW 30/- 24/18
Low load 1.9 0.2 19.5 1.7 77.0 -25.0 30.0 -10.0 -23.0 90.6 HIGH 15/- -20/-

∗ This compressor has 4-pole motor. The value when compressor frequency (Hz) is measured by a clamp
meter becomes 2 times of No. of compressor revolutions (rps).

– 22 –
 4. WIRING DIAGRAM
4-1. Outdoor Unit
RAV-GP1101AT8(J)-E, -TR RAV-GP1401AT8(J)-E, -TR RAV-GP1601AT8(J)-E, -TR

– 23 –
 5. SPECIFICATIONS OF ELECTRICAL PARTS
5-1. Outdoor Unit
No. Parts name Type Specifications

1 Compressor RX420A3F-27M —

2 Outdoor fan motor ICF-280-A100-1 DC 280 V, 100 W

3 4-way valve coil STF-H01AJ1736A1 AC 220 – 240 V, 50/60 Hz

4 PMV coil UKV-A038 DC 12 V

5 High pressure switch ACB-4UB83W OFF : 4.15 MPa

6 Reactor CH-78 4.2 mH, 16 A

7 Reactor CH-68 18 mH, 5 A

8 Reactor CH-56 5.8 mH, 18.5 A

9 P.C. board (Compressor drive) MCC-1596 —

10 P.C. board (Fan motor drive) MCC-1597 —

11 P.C. board (Control) MCC-1599 —

12 P.C. board (Noise filter) MCC-1600 —

13 Outdoor temp. sensor (TO sensor) — 10 kΩ at 25°C

14 Discharge temp. sensor (TD sensor) — 50 kΩ at 25°C

15 Suction temp. sensor (TS sensor) — 10 kΩ at 25°C

16 Heat exchanger sensor (TE sensor) — 10 kΩ at 25°C

17 Heat exchanger mid. temp. sensor (TL sensor) — 50 kΩ at 25°C

18 Fuse TLC 10A 10 A, 250 V

19 Fuse (Mounted on P.C. board, MCC-1596) GAC1 31.5A 31.5 A, 500 V

20 Fuse (Mounted on P.C. board, MCC-1596) SCT 3.15A T3.15 A, AC 250 V

21 Fuse (Mounted on P.C. board, MCC-1597) GDM 250V 15A 15 A, 250 V

22 Fuse (Mounted on P.C. board, MCC-1597) SCT 3.15A T3.15 A, AC 250 V

23 Fuse (Mounted on P.C. board, MCC-1599) FJL 250V 3.15A T3.15 A, AC 250 V

24 Fuse (Mounted on P.C. board, MCC-1600) ET 6.3A T6.3 A, AC 250 V

25 Relay EL200/240A2-F(M) Contact : AC 480 V, 20A

26 Posistor ZPR0YCE 101A 500 100 Ω, 500 V

27 Compressor thermostat US-622 OFF : 125 ± 4 °C, ON : 60 ± 5 °C

– 24 –
 6. REFRIGERANT R32
This air conditioner adopts the R32 refrigerant which 7. Be sure to carry out installation or removal
does not damage the ozone layer. according to the installation manual.
The working pressure of the new refrigerant R32 is Improper installation may cause refrigeration
1.6 times higher than conventional refrigerant (R22). trouble, water leakage, electric shock, fire, etc.
The refrigerating oil is also changed in accordance 8. Unauthorized modifications to the air conditioner
with change of refrigerant, so be careful that water, may be dangerous. If a breakdown occurs please
dust, and existing refrigerant or refrigerating oil are call a qualified air conditioner technician or
not entered in the refrigerant cycle of the air electrician.
conditioner using the new refrigerant during Improper repair may result in water leakage,
installation work or servicing time. electric shock and fire, etc.
The next section describes the precautions for air
conditioner using the new refrigerant.
Conforming to contents of the next section together
6-2. Refrigerant Piping Installation
with the general cautions included in this manual, 6-2-1. Piping Materials and Joints Used
perform the correct and safe work.
For the refrigerant piping installation, copper pipes
and joints are mainly used.
6-1. Safety During Installation/Servicing Copper pipes and joints suitable for the refrigerant
As R32’s pressure is about 1.6 times higher than that must be chosen and installed.
of R22, improper installation/servicing may cause a Furthermore, it is necessary to use clean copper
serious trouble. By using tools and materials pipes and joints whose interior surfaces are less
exclusive for R32, it is necessary to carry out affected by contaminants.
installation/servicing safely while taking the following
precautions into consideration. 1. Copper Pipes
1. Never use refrigerant other than R32 in an air It is necessary to use seamless copper pipes
conditioner which is designed to operate with R32. which are made of either copper or copper alloy
If other refrigerant than R32 is mixed, pressure in and it is desirable that the amount of residual oil is
the refrigeration cycle becomes abnormally high, less than 40 mg/10 m.
and it may cause personal injury, etc. by a rupture. Do not use copper pipes having a collapsed,
2. Confirm the used refrigerant name, and use tools deformed or discolored portion (especially on the
and materials exclusive for the refrigerant R32. interior surface).
The refrigerant name R32 is indicated on the Otherwise, the expansion valve or capillary tube
visible place of the outdoor unit of the air may become blocked with contaminants.
conditioner using R32 as refrigerant. As an air conditioner using R32 incurs pressure
A diameter of the charge port for R32 is the same higher than when using R22, it is necessary to
as that for the R410A’s. Be careful not to charge choose adequate materials.
the refrigerant by mistake. Thicknesses of copper pipes used with R32 are as
3. If a refrigeration gas leakage occurs during shown in Table 6-2-1. Never use copper pipes
installation/servicing, be sure to ventilate fully. thinner than 0.8mm even when it is available on
If the refrigerant gas comes into contact with fire, a the market.
poisonous gas may occur.
4. When installing or removing an air conditioner, do NOTE
not allow air or moisture to remain in the
refrigeration cycle. Refer to the “6-6. Instructions for Re-use Piping of
Otherwise, pressure in the refrigeration cycle may R22 or R407C”.
become abnormally high so that a rupture or
personal injury may be caused.
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.
If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater, space
heater, etc., a poisonous gas may occur.
6. When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that, even
when refrigerant leaks, its concentration does not
exceed the marginal level.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.

– 25 –
 Table 6-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter Outer diameter (mm) R410A or R32 R22

1/4 6.4 0.80 0.80

3/8 9.5 0.80 0.80

1/2 12.7 0.80 0.80

5/8 15.9 1.00 1.00

1. Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare Joints
Flare joints used to connect the copper pipes cannot be used for piping whose outer diameter exceeds 20
mm. In such a case, socket joints can be used.
Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 6-2-3 to 6-2-5 below.
b) Socket Joints
Socket joints are such that they are braced for connections, and used mainly for thick piping whose
diameter is larger than 20 mm. Thicknesses of socket joints are as shown in Table 6-2-2.

Table 6-2-2 Minimum thicknesses of socket joints

Reference outer diameter of Minimum joint thickness

Nominal diameter
copper pipe jointed (mm) (mm)

1/4 6.4 0.50

3/8 9.5 0.60

1/2 12.7 0.70

5/8 15.9 0.80

6-2-2. Processing of Piping Materials

When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil other than lubricating oils used in the installed air conditioner is used,
and that refrigerant does not leak.
When using lubricating oils in the piping processing, use such lubricating oils whose water content has been
removed. When stored, be sure to seal the container with an airtight cap or any other cover.

1. Flare Processing Procedures and Precautions

a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.

– 26 –
c) Insertion of Flare Nut
d) Flare Processing
DIA D
Make certain that a clamp bar and copper pipe have been A
cleaned.
By means of the clamp bar, perform the flare processing
correctly.
Use either a flare tool for R410A / R32 or conventional flare
tool.
Flare processing dimensions differ according to the type of
flare tool. Fig. 6-2-1 Flare processing dimensions
When using a conventional flare tool, be sure to secure
“dimension A” by using a gauge for size adjustment.

Table 6-2-3 Dimensions related to flare processing for R410A or R32 / R22

A (mm)
Outer
Nominal Thickness Conventional flare tool Conventional flare tool
diameter Flare tool for
diameter (mm) (R410A or R32) (R22)
(mm) R410A, R22
clutch type
Clutch type Wing nut type Clutch type Wing nut type

1/4 6.4 0.8 0 to 0.5 1.0 to 1.5 1.5 to 2.0 0.5 to 1.0 1.0 to 1.5

3/8 9.5 0.8 0 to 0.5 1.0 to 1.5 1.5 to 2.0 0.5 to 1.0 1.0 to 1.5

1/2 12.7 0.8 0 to 0.5 1.0 to 1.5 2.0 to 2.5 0.5 to 1.0 1.5 to 2.0

5/8 15.9 1.0 0 to 0.5 1.0 to 1.5 2.0 to 2.5 0.5 to 1.0 1.5 to 2.0

3/4 19.1 1.2 0 to 0.5 1.0 to 1.5 2.0 to 2.5 — —

Table 6-2-4 Flare and flare nut dimensions for R410A or R32

Dimension (mm)
Nominal Outer diameter Thickness Flare nut width
diameter (mm) (mm) (mm)
A B C D

1/4 6.4 0.8 9.1 9.2 6.5 13 17

3/8 9.5 0.8 13.2 13.5 9.7 20 22

1/2 12.7 0.8 16.6 16.0 12.9 23 26

5/8 15.9 1.0 19.7 19.0 16.0 25 29

3/4 19.1 1.2 24.0 — 19.2 28 36

Table 6-2-5 Flare and flare nut dimensions for R22

Dimension (mm)
Nominal Outer diameter Thickness Flare nut width
diameter (mm) (mm) (mm)
A B C D

1/4 6.4 0.8 9.1 9.2 6.5 13 17

3/8 9.5 0.8 13.0 13.5 9.7 20 22

1/2 12.7 0.8 16.2 16.0 12.9 20 24

5/8 15.9 1.0 19.4 19.0 16.0 23 27

3/4 19.1 1.0 23.3 24.0 19.2 34 36

– 27 –
 6˚
to 4
45˚

A B C D

43˚
to 4
5˚

Fig. 6-2-2 Relations between flare nut and flare seal surface

2. Flare Connecting Procedures and Precautions

a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench.
The tightening torque for R410A or R32 is the same as that for conventional R22.
Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable.
When choosing the tightening torque, comply with values designated by manufacturers.
Table 6-2-6 shows reference values.

NOTE
When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Table 6-2-6 Tightening torque of flare for R410A or R32 [Reference values]

Tightening torque of torque

Nominal Outer diameter Tightening torque
wrenches available on the market
diameter (mm) N•m (kgf•m) N•m (kgf•m)

1/4 6.4 14 to 18 (1.4 to 1.8) 16 (1.6), 18 (1.8)

3/8 9.5 33 to 42 (3.3 to 4.2) 42 (4.2)

1/2 12.7 50 to 62 (5.0 to 6.2) 55 (5.5)

5/8 15.9 68 to 82 (6.8 to 8.2) 65 (6.5)

3/4 19.1 100 to 120 (10.0 to 12.0) ——

– 28 –
6-3. Tools
6-3-1. Required Tools
Refer to the “4. Tools” (Page 16)

6-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.

Recover the refrigerant, and check no refrigerant

remains in the equipment.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
Connect the charge hose to packed valve service power switch.
port at the outdoor unit’s gas side.

Keep the status as it is for 1 to 2 minutes, and ensure

Connect the charge hose of the vacuum pump that the compound gauge’s pointer does not return.
adapter.

Set the refrigerant cylinder to the electronic balance,

Open fully both packed valves at liquid and gas connect the connecting hose to the cylinder and the
sides. connecting port of the electronic balance, and charge
liquid refrigerant.

Place the handle of the gauge manifold Low in the (For refrigerant charging, see the figure below.)
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.

1) Never charge refrigerant exceeding the specified amount.

2) If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
3) Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, which changes characteristics of the air conditioner, refrigerant exceeding the specified
amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and
may cause a rupture or personal injury.

(INDOOR unit) (Liquid side) (OUTDOOR unit)

Service valve

Opened

(Gas side)

Refrigerant cylinder
(With siphon pipe)
Service valve
Check valve
Closed

Open/Close valve
for charging

Service port

Electronic balance for refrigerant charging

Fig. 6-4-1 Configuration of refrigerant charging

– 29 –
1) Be sure to make setting so that liquid can be charged.
2) When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.

R32 refrigerant is a Single-component refrigerant that does not change its composition.
Although it is possible to charge the refrigerant with either liquid or gas, charge it with liquid.
(If using gas for charging, composition of the refrigerant changes and then characteristics of the air conditioner
change.)
[ Cylinder with siphon ] [ Cylinder without siphon ]
Gauge manifold Gauge manifold
OUTDOOR unit OUTDOOR unit

cylinder
Refrigerant
Refrigerant
cylinder

Electronic Electronic
balance balance

Siphon

Fig. 6-4-2

6-5. Brazing of Pipes 1) Phosphor bronze brazing filler tends to react with
6-5-1. Materials for Brazing sulfur and produce a fragile compound water
solution, which may cause a gas leakage.
1. Silver brazing filler Therefore, use any other type of brazing filler at a
Silver brazing filler is an alloy mainly composed hot spring resort, etc., and coat the surface with a
of silver and copper. paint.
It is used to join iron, copper or copper alloy, and 2) When performing brazing again at time of
is relatively expensive though it excels in solder servicing, use the same type of brazing filler.
ability.

2. Phosphor bronze brazing filler 6-5-2. Flux

Phosphor bronze brazing filler is generally used 1. Reason why flux is necessary
to join copper or copper alloy.
• By removing the oxide film and any foreign
matter on the metal surface, it assists the flow of
3. Low temperature brazing filler brazing filler.
Low temperature brazing filler is generally called • In the brazing process, it prevents the metal
solder, and is an alloy of tin and lead. surface from being oxidized.
Since it is weak in adhesive strength, do not use • By reducing the brazing filler’s surface tension,
it for refrigerant pipes. the brazing filler adheres better to the treated
metal.

– 30 –
2. Characteristics required for flux 6-5-3. Brazing
• Activated temperature of flux coincides with the As brazing work requires sophisticated techniques,
brazing temperature. experiences based upon a theoretical knowledge, it
• Due to a wide effective temperature range, flux is must be performed by a person qualified.
hard to carbonize. In order to prevent the oxide film from occurring in the
• It is easy to remove slag after brazing. pipe interior during brazing, it is effective to proceed
with brazing while letting dry Nitrogen gas flow.
• The corrosive action to the treated metal and
brazing filler is minimum.
• It excels in coating performance and is harmless Never use gas other than Nitrogen gas.
to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and 1. Brazing method to prevent oxidation
shape of treated metal, type of brazing filler and 1) Attach a reducing valve and a flow-meter to the
brazing method, etc. Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping material,
3. Types of flux and attach a flow-meter to the cylinder.
• Noncorrosive flux 3) Apply a seal onto the clearance between the
Generally, it is a compound of borax and boric piping material and inserted copper pipe for
acid. Nitrogen in order to prevent backflow of the
It is effective in case where the brazing Nitrogen gas.
temperature is higher than 800°C. 4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
• Activated flux
5) Adjust the flow rate of Nitrogen gas so that it is
Most of fluxes generally used for silver brazing
lower than 0.05 m³/Hr or 0.02 MPa (0.2kgf/cm²)
are this type.
by means of the reducing valve.
It features an increased oxide film removing
capability due to the addition of compounds such 6) After performing the steps above, keep the
as potassium fluoride, potassium chloride and Nitrogen gas flowing until the pipe cools down to
sodium fluoride to the borax-boric acid a certain extent (temperature at which pipes are
compound. touchable with hands).
7) Remove the flux completely after brazing.
4. Piping materials for brazing and used
brazing filler/flux

Piping material Used brazing filler Used flux

M Flow meter
Copper - Copper Phosphor copper Do not use

Copper - Iron Silver Paste flux Stop valve

Iron - Iron Silver Vapor flux

Nitrogen gas
cylinder
From Nitrogen cylinder

1) Do not enter flux into the refrigeration cycle.

2) When chlorine contained in the flux remains within
the pipe, the lubricating oil deteriorates. Pipe
Nitrogen
Therefore, use a flux which does not contain gas
chlorine.
3) When adding water to the flux, use water which Rubber plug
does not contain chlorine (e.g. distilled water or
ion-exchange water).
4) Remove the flux after brazing.
Fig. 6-5-1 Prevention of oxidation during brazing

– 31 –
6-6. Instructions for Re-use Piping of R22 or R407C
Instruction of Works: 5. A dryer on the market is attached to the existing
The existing R22 and R407C piping can be pipes.
reused for our digital inverter R32 products • There is possibility that copper green rust generated.
installations. 6. Check the oil when the existing air conditioner was
removed after refrigerant had been recovered.
WARNING In this case, if the oil is judged as clearly different
compared with normal oil
Confirming the existence of scratches or dents on the
• The refrigerator oil is copper rust green :
existing pipes and confirming the reliability of the pipe
There is possibility that moisture is mixed with
strength are conventionally referred to the local site.
the oil and rust forms inside of the pipe.
If the specified conditions can be cleared, it is
possible to update existing R22 and R407C pipes to • There is discolored oil, a large quantity of the
those for R32 models. remains, or bad smell.
• A large quantity of sparkle remained wear-out
powder is observed in the refrigerator oil.
6-6-1. Basic Conditions Needed to Reuse the 7. The air conditioner which compressor was
exchanged due to a trouble compressor.
Existing Pipe
When the discolored oil, a large quantity of the
Check and observe three conditions of the refrigerant remains, mixture of foreign matter, or a large
piping works. quantity of sparkle remained wear-out powder is
1. Dry (There is no moisture inside of the pipes.) observed, the cause of trouble will occur.
2. Clean (There is no dust inside of the pipes.) 8. Installation and removal of the air conditioner are
3. Tight (There is no refrigerant leak.) repeated with temporary installation by lease and etc.
9. In case that type of the refrigerator oil of the
existing air conditioner is other than the following
6-6-2. Restricted Items to Use the Existing
oil (Mineral oil), Suniso, Freol-S, MS (Synthetic oil),
Pipes alkyl benzene (HAB, Barrel-freeze), ester series,
In the following cases, the existing pipes cannot be PVE only of ether series.
reused as they are. Clean the existing pipes or • Winding-insulation of the compressor may
exchange them with new pipes. become inferior.
1. When a scratch or dent is heavy, be sure to use NOTE
the new pipes for the works.
2. When the thickness of the existing pipe is thinner The above descriptions are results of confirmation by
than the specified “Pipe diameter and thickness” our company and they are views on our air
be sure to use the new pipes for the works. conditioners, but they do not guarantee the use of the
• The operating pressure of R32 is high. If there is existing pipes of the air conditioner that adopted
a scratch or dent on the pipe or a thinner pipe is R410A in other companies.
used, the pressure strength may be inadequate,
which may cause the pipe to break in the worst 6-6-3. Branching Pipe for Simultaneous
case. Operation System
• In the concurrent twin system, when TOSHIBA-
∗ Pipe diameter and thickness (mm) specified branching pipe is used, it can be reused.
Branching pipe model name:
Reference outside Wall thickness
diameter (mm) (mm)
Material RBC-TWP30E, RBC-TWP50E, RBC-TRP100E
6.4 0.8 —
On the existing air conditioner for simultaneous
operation system (twin system), there is a case of
9.5 0.8 —
using branch pipe that has insufficient compressive
12.7 0.8 — strength. In this case please change it to the branch
15.9 1.0 — pipe for R32 or R410A.
• In case that the pipe diameter is DIA 12.7 mm or 6-6-4. Curing of Pipes
less and the thickness is less than 0.7 mm, be When removing and opening the indoor unit or
sure to use the new pipes for works. outdoor unit for a long time, cure the pipes as follows:
3. The pipes are left as coming out or gas leaks. • Otherwise rust may forms when moisture or foreign
(Poor refrigerant) matter due to dewing enters in the pipes.
• There is possibility that rain water or air including • The rust cannot be removed by cleaning, and a
moisture enters in the pipe. new piping work is necessary.
4. Refrigerant recovery is impossible.
(Refrigerant recovery by the pump-down operation Place position Term Curing manner
on the existing air conditioner) 1 month or more Pinching
Outdoors
• There is possibility that a large quantity of poor Less than 1 month
Pinching or taping
oil or moisture remains inside of the pipe. Indoors Every time

– 32 –
6-6-5. Final Installation Checks

YES Existing pipes: Cannot be used.

Are there scratches or dents on the existing pipes? • Use new pipes.
NO

NO
Is it possible to operate the existing air conditioner?

YES

• After the existing air conditioner is operated in cooling

mode for approx. 30 minutes or longer,* recover the
refrigerant
• For cleaning the pipes and recovering oil
• Refrigerant recovery: Pump down method

Was largely discolored oil or a large quantity of remains YES

discharged? (When the oil deteriorates, the color of the oil Clean the pipes or use new pipes.
changes to a muddy or black color.)

NO

Connect the indoor/outdoor units to the existing pipe.

• Use a flare nut attached indoor/outdoor units. (Do not
existing pipe.)
• Re-machine the flare machining size to size for R32.

• (Airtight test), Vacuum dry, Refrigerant charge, Gas leak

check

Test run

– 33 –
6-6-6. Handling of Existing Pipe 6-6-7. Recovering Refrigerant
When using the existing pipe, carefully check it for Use the refrigerant recovery equipment to recover the
the following: refrigerant.
• Wall thickness (within the specified range)
• Scratches and dents 6-7. Charging additional refrigerant
• Water, oil, dirt, or dust in the pipe Amount of additional refrigerant shall be restricted by
• Flare looseness and leakage from welds the following explanation to ensure the reliability.
• Deterioration of copper pipe and heat insulator Miss-charging leads to the abnormal high pressure in
• Before recovering the refrigerant in the existing the refrigerant cycle, causing a rupture, an injury and
system, perform a cooling operation for at least 30 a compressor malfunction.
minutes.
6-7-1. [Assumed gas leak]
Cautions for using existing pipe The refrigerant can be charged only when the
• Do not reuse a flare nut to prevent gas leaks. amount of a leak such as a slow-leak found at the
Replace it with the supplied flare nut and then installation work can be ensured that it is within the
process it to a flare. additional limits shown in the following.
• Blow nitrogen gas or use an appropriate means to Recharge the refrigerant if the amount of leakage is
keep the inside of the pipe clean. unknown when you feel “Cooling is not working well”
If discolored oil or much residue is discharged, or “Heating is not working well”.
wash the pipe.
• Check welds, if any, on the pipe for gas leaks. 6-7-2. [Limiting the additional charge]
• There may be a problem with the pressure • The maximum amount of additional refrigerant shall
resistance of the branch pipes of the existing be up to 10 % of the normal amount of the
piping. refrigerant.
Replace them with branch pipes (sold separately). If no improvement in symptoms can be found at the
above limitation, recover all gases and recharge the
When the pipe corresponds to any of the following, normal amount of refrigerant.
do not use it. Install a new pipe instead. • If the slow leak is found at the installation work and
• The pipe has been opened (disconnected from the connection pipe length is 15 m or less, tighten
indoor unit or outdoor unit) for a long period. the flare nut at the leak point and do not add the
• The pipe has been connected to an outdoor unit refrigerant.
that does not use refrigerant R22, R410A, R32
R407C. 6-7-3. [Cautions on charging additional
• The existing pipe must have a wall thickness equal refrigerant]
to or larger than the following thicknesses.
• When charging additional refrigerant, use a
Reference outside Wall thickness
balance with an accuracy of more than 10g scale.
diameter (mm) (mm)
Material Do not use a health-meter etc.
• If the refrigerant gas leaks, find the leakage point
6.4 0.8 —
and repair it securely. Though the refrigerant gas
9.5 0.8 — itself is innocuous, if it touch a fire source such as
fan heater, stove or kitchen stove, noxious gas may
12.7 0.8 — occur.
15.9 1.0 — • When charging the refrigerant, charge with liquid
refrigerant.
19.1 1.2 —
Work carefully and charge it little by little since it
22.2 1.0 Half hard may be rapidly charged due to the liquid state.
28.6 1.0 Half hard

• Do not use any pipe with a wall thickness less than

these thicknesses due to insufficient pressure
capacity.

– 34 –
6-8. General safety precautions for using R32 refrigerant
6-8-1. Recovery 6-8-2. Decommissioning
• When removing refrigerant from a system, either for • Before carrying out this procedure, it is essential
servicing or decommissioning, it is recommended that the technician is completely familiar with the
good practice that all refrigerants are removed equipment and all its details. Only a qualified
safely. installer (∗1) or qualified service person (∗1) is
• When transferring refrigerant into cylinders, ensure allowed to do this work.
that only appropriate refrigerant recovery cylinders • It is recommended good practice that all
are employed. refrigerants are recovered safely.
• Ensure that the correct number of cylinders for • Prior to the task being carried out, an oil and
holding the total system charge are available. refrigerant sample shall be taken in case analysis is
• All cylinders to be used are designated for the required prior to re-use of reclaimed refrigerant.
recovered refrigerant and labelled for that • It is essential that electrical power is available
refrigerant before the task is commenced.
(i.e. special cylinders for the recovery of
refrigerant).
• Cylinders shall be complete with pressure relief a) Become familiar with the equipment and its
valve and associated shut-off valves in good operation.
working order. b) Isolate system electrically.
• Empty recovery cylinders are evacuated and, if c) Before attempting the procedure ensure that :
possible, cooled before recovery occurs. • Mechanical handling equipment is available, if
required, for handling refrigerant cylinders;
• The recovery equipment shall be in good working
• All personal protective equipment is available
order with a set of instructions concerning the
and being used correctly;
equipment that is at hand and shall be suitable for
• The recovery process is supervised at all times
the recovery of mildly flammable refrigerants.
by a competent person;
• In addition, a set of calibrated weighing scales shall • Recovery equipment and cylinders conform to
be available and in good working order. the appropriate standards.
• Hoses shall be complete with leak-free disconnect d) Pump down refrigerant system, if possible.
couplings and in good condition. e) If a vacuum is not possible, make a manifold so
• Before using recovery machine check that it is that refrigerant can be removed from the various
satisfactory working order, has been properly parts of the system.
maintained and that any associated electrical f) Make sure that cylinder is situated on the scales
components are sealed to prevent ignition in the before recovery takes place.
event of a refrigerant release. g) Start the recovery machine and operate in
• Consult manufacturer if in doubt. accordance with manufacturer’s instructions.
• The recovered refrigerant shall be returned to the h) Do not overfill cylinders (No more than 80%
refrigerant supplier in the correct recovery cylinder, volume liquid change).
and the relevant Waste Transfer Note arranged. i) Do not exceed the maximum working pressure of
the cylinder, even temporarily.
• Do not mix refrigerants in recovery units and j) When the cylinders have been filled correctly and
especially not in cylinders. the process complete, make sure that the
• If compressors or compressor oils are to be cylinders and the equipment are removed from
removed, ensure that they have been evacuated to site promptly and all isolation valves on the
an acceptable level to make certain that mildly equipment are closed off.
flammable refrigerant does not remain within the k) Recovered refrigerant shall not be changed into
lubricant. another refrigerant system unless it has been
• The evacuation process shall be carried out prior to cleaned and checked.
returning the compressor to the suppliers.
• Only electric heating to the compressor body shall (*1) Refer to the “Definition of Qualified Installer or
be employed to accelerate this process. Qualified Service Person.”
• When oil is drained from a system, it shall be
carried out safely. 6-8-3. Labelling
• Equipment shall be labelled stating that it has been
de-commissioned and emptied of refrigerant.
• The label shall be dated and signed.
• Ensure that are labels on the equipment stating the
equipment contains mildly flammable refrigerant.

– 35 –
 7. CIRCUIT CONFIGURATION AND CONTROL
SPECIFICATIONS
7-1. Outdoor Unit Control
7-1-1. Print Circuit Board, MCC-1596 (Compressor IPDU)

CN851 (Red) CN101 (White)

Connector for MCC-1597 (CN505) Connector for MCC-1597 (CN502)

CN13 (Black)
Terminal for power relay

F02
Electric circuit protective fuse
(500V, 31.5A)

CN12 (White)
Terminal for MCC-1600 (CN17)

F01
Electric circuit protective fuse
(500V, 31.5A)

CN11 (Red)
Terminal for power relay

CN04 (Red)
Terminal for PTC thermistor

CN211 (Red), CN212 (White), CN213 (Black) CN19 (Yellow), CN20 (Yellow)
Compressor output terminal Terminal for reactor CH78

– 36 –
7-1-2. Print Circuit Board, MCC-1597 (Fan Motor IPDU)

CN750 (White) CN700 (Blue) CN500 (Red)

Fan motor output (Upper side) Fan motor output (Lower side) Connector for MCC-1600 (CN23)
and reactor CH68

CN504 (Blue) CN602 (Black) F500

Connector for MCC-1599 Connector for MCC-1600 (CN51) Electric circuit protective fuse
(CN802) (250V, 15A)

P501 (Black) CN505 (Red) CN502 (White)

Lead wire for grounding Connector for MCC-1596 (CN851) Connector for MCC-1596 (CN101)

– 37 –
7-1-3. Print Circuit Board, MCC-1599 (Interface (CDB))

CN708 (Blue) CN608 (White)

Connector for power relay coil Connector for MCC-1600 (CN50)

CN02 (Red)
Connector for CN802 (White)
MCC-1600 (CN10 and CN19) Connector for MCC-1597 (CN504)

F01
CN700 (Yellow) Power supply protective fuse
4-way valve connector (250V, 3.15A)

Temp.sensor connector
CN604 (White) TL sensor
CN603 (White) TD sensor
CN602 (Yellow) TO sensor
CN601 (White) TE sensor
CN600 (White) TS sensor

Specific operation switch

SW801
SW804
SW805
SW806

Display select switch

SW800
SW803

Initial setting switch

SW802

Power-ON,check display LED

D800 to D804 (Yellow)
D805 (Green)

Indoor/Outdoor communication
signal LED
CN690 (Green) CN609 (Blue) CN710 (White) D503 (Green), (Outdoor → Indoor)
High-pressure Case thermostat connector PMV1 Connector D502 (Orange), (Indoor → Outdoor)
switch connector

CN704 (Blue) CN610 (Yellow) CN01 (White)

Compressor ON Outside input connector Inter-unit cable connector
output connector

– 38 –
7-1-4. Print Circuit Board, MCC-1600 (Noise Filter)

CN05 (Red) CN10 (Red) CN16 (Red)

Power supply terminal (L1) Terminal for MCC-1599 (CN02) and Terminal for PTC thermistor Terminal for power relay

F01
Varistor protective fuse
(250V, 6.3A)

CN06 (White)
Power supply terminal (L2)

CN17 (White)
F02 Terminal for
MCC-1596 (CN02)
Varistor protective fuse
(250V, 6.3A) CN18 (Black)
Terminal for
power relay
CN07 (Black)
Power supply terminal (L3) CN19 (Gray)
Terminal for
F03 MCC-1599 (CN02)
Varistor protective fuse
(250V, 6.3A) CN09 (Brown)
Terminal for
grounding
CN20 (White)
Power supply terminal (L2) CN23 (Red)
Connector for
MCC-1597 (CN500)

CN08 (Gray)
Neutral terminal

CN51 (Black) CN50 (White)

Connector for Connector for
MCC-1597 (CN602) MCC-1599 (CN608)

– 39 –
7-2. Outline of Main Controls
1. PMV (Pulse Motor Valve) control
1) PMV is controlled between 30 and 500 pulses during operation.
2) In cooling operation, PMV is usually controlled with the temperature difference between TS sensor and
TC sensor aiming 1 to 4K as the target value.
3) In heating operation, PMV is usually controlled with the temperature difference between TS sensor and
TE sensor aiming –1 to 4K as the target value.
4) When the cycle excessively heated in both cooling and heating operation, PMV is controlled by TD
sensor. The target value is usually 91°C in cooling operation and 96°C in heating operation.

REQUIREMENT
A sensor trouble may cause a liquid back-flow or abnormal overheat resulting in excessive shortening of the
compressor life. In a case of trouble on the compressor, be sure to check there is no trouble in the resistance
value or the refrigerating cycle of each sensor after repair and then start the operation.

2. Discharge temperature release control

1) When the discharge temperature did not fall or the discharge temperature rapidly went up by PMV
control, this control lowers the operation frequency. It subdivides the frequency control up to 0.6Hz to
stabilize the cycle.
2) When the discharge temperature detected an abnormal stop zone, the compressor stops and then
restarts after 2 minutes 30 seconds.
The trouble counting is cleared when the operation continued for 10 minutes. If the trouble is detected by
4 times without clearing, the trouble is determined and restarting is not performed.
” The cause is considered as excessively little amount of refrigerant, PMV trouble or clogging of the cycle.
3) For displayed contents of trouble, confirm on the check code list.

TD [˚C]

Abnormal stop
111
Frequency normal down
109
Frequency slow down
106
Frequency hold
103
Frequency slow up
(Up to command)
96
As command is

– 40 –
3. Outdoor fan control
Revolution frequency allocation of fan taps [rpm]
W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE
GP110 to Up 200 240 240 260 320 380 480 500 530 610 640 660 720 780
GP160 Down — — 200 280 360 400 500 520 550 630 660 700 740 820

3-1) Cooling fan control

c The outdoor fan is controlled by TL sensor, TO sensor and the operation frequency.
The outdoor fan is controlled by every 1 tap of DC fan control (14 taps).
d Only for 60 seconds after the operation has started, the maximum fan tap corresponding to the
zone in the following table is fixed and then the fan is controlled by temperature of TL sensor.
TL [˚C]
WE tap 20 Hz 20Hz 45Hz
58 Temp. range or lower to 45Hz or higher
55 Min. Max. Min. Max. Min. Max.
38˚C ≤ TO W6 WC W8 WD WA WD
+1 tap / 20 sec 29˚C ≤ TO < 38˚C W5 WB W7 WC∗ W9 WC
Up to the maximum
revolution frequency of each zone 15˚C ≤ TO < 29˚C W4 W8 W6 WA W8 WC
5˚C ≤ TO < 15˚C W3 W6 W5 W8 W7 WA
38 0˚C ≤ TO < 5˚C W2 W4 W4 W6 W5 W8
Revolution frequency hold
35
–1 tap / 20 sec –4˚C ≤ TO < 0˚C W2 W3 W3 W5 W4 W6
Up to the minimum
revolution frequency of each zone TO < –4˚C W1 W2 W1 W4 W2 W6
TO trouble W1 WC W1 WD W2 WD

∗ : WB for GP110
3-2) Heating fan control
c The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency.
(Control from minimum W1 to maximum (according to the following table))
d For 3 minutes after the operation has started, the maximum fan tap corresponding to the zone in
the following table is fixed and then the fan is controlled by temperature of TE sensor.
TE [˚C] e When TE ≥ 24°C continues for 5 minutes, the
compressor stops.
–2 taps / 20 sec. (Up to W1) It is the same status as the normal thermostat-
Stop timer count OFF without trouble display.
24 The compressor restarts after approx. 2 minutes
–2 taps / 20 sec. (Up to W1) 30 seconds and this intermittent operation is not
21 abnormal.
–1 tap / 20 sec. (Up to W1) f In case that the status in item e generates
18 frequently, stain on filter of the suction part of the
Revolution frequency hold indoor unit is considered.
Clean the filter and then restart the operation.
15
+1 tap / 20 sec
(Up to the maximum tap of each zone)

Object: GP140 (GP160) Object: GP110

20 Hz 20Hz 45Hz 20 Hz 20Hz 45Hz
Temp. range or lower to 45Hz or higher Temp. range or lower to 45Hz or higher
Max. Max. Max. Max. Max. Max.
10˚C ≤ TO W7 W8 W9 10˚C ≤ TO W7 W8 W9
5˚C ≤ TO < 10˚C W9 WA WB (WC) 5˚C ≤ TO < 10˚C W9 WA WA
–3˚C ≤ TO < 5˚C WB (WC) WB (WC) WC –3˚C ≤ TO < 5˚C WA WA WC
–10˚C ≤ TO < –3˚C WC WC WC –10˚C ≤ TO < –3˚C WC WC WC
TO < –10˚C WD WD WD TO < –10˚C WD WD WD
TO trouble WD WD WD TO trouble WD WD WD

– 41 –
4. Coil heating control
1) This control function heats the compressor by turning on the stopped compressor instead of a case
heater.
It purposes to prevent stagnation of the refrigerant inside of the compressor.
2) As usual, turn on power of the compressor for the specified time before a test run after installation;
otherwise a trouble of the compressor may be caused.
As same as a test run, it is recommended to turn on power of the compressor beforehand when starting
operation after power of the compressor has been interrupted and left as it is for a long time.
3) A judgment for electricity is performed by TD and TO sensors.
If TO sensor is trouble, a backup control is automatically performed by TE sensor.
For a case of TO sensor trouble, judge it with outdoor LED display.
4) For every model, the power is turned off when TD is 30°C or more.

TO (Normal time) TE (TO sensor trouble)

18˚C 20˚C
No power No power
15˚C 18˚C
• Power-ON Intermittent power-ON • Power-ON Intermittent power-ON
condition 10 minutes: ON / condition 10 minutes: ON /
TD<30˚C 10˚C 5 minutes: OFF TD < 30˚C 12˚C 5 minutes: OFF
Output Output
[40W or equivalent] [40W or equivalent]
8˚C 10˚C
Continuous power-ON Continuous power-ON
Output Output
[40W or equivalent] [40W or equivalent]

REQUIREMENT
While heating the winding wire by applying a current to it, an abnormal sound may be generated. It is no
abnormality.

5. Short intermittent operation preventive control

1) For 3 to 10 minutes after operation start, in some cases, the compressor does not stop to protect the
compressor even if receiving the thermostat-OFF signal from indoor.
However it is not abnormal status. (The operation continuance differs according to the operation status.)
2) When the operation stops by the remote controller, the operation does not continue.

6. Current release control

No. of revolutions of the compressor is controlled by AC current value detected by T611 on the outdoor P.C.
board so that the input current of the inverter does not exceed the specified value.

Current [A]
Frequency down

I1
Hold Hold
I1–1.0
Normal operation

GP110 GP140 GP160

Objective mode l
COOL HEAT COOL HEAT COOL HEAT
I1 value [A ] 9.6 15.2 9.6 15.2 9.6 15.2

– 42 –
7. Current release value shift control Current release control value (I1)
1) This control purposes to prevent troubles of the [A]
electronic parts such as the compressor driving Temperature range GP110 GP140 GP160
elements and the compressor during cooling
operation. 47˚C≤ TO 7.5 7.5 7.5
2) The current release control value (I1) is selected 39˚C≤ To < 47˚C 7.5 8.7 9.6
from the following table according to TO sensor TO < 39˚C 9.6 9.6 9.6
value.
TO < –5˚C 7.5 8.7 9.6
TO trouble 7.5 7.5 7.5

8. Over-current protective control

1) When the over-current protective circuit detected an abnormal current, stop the compressor.
2) The compressor restarts after 2 minutes 30 seconds setting [1] as a trouble count.
3) When the trouble count [8] was found, determine a trouble and restart operation is not performed.
4) For the check code display contents, confirm on the check code list.

9. High-pressure release control

1) The operation frequency is controlled to restrain abnormal rising of high pressure by TL sensor in cooling
operation and TC sensor in heating operation.
2) When TL sensor in cooling operation or TC sensor in heating operation detects abnormal temperature of
the stop zone, stop the compressor and the trouble count becomes +1.
3) When the compressor stopped with 2), the operation restarts from the point of the normal operation zone
(e point or lower) where it returned after 2 minutes 30 seconds.
4) The trouble count when the compressor stopped with 2) is cleared after the operation continued for 10
minutes.
If the trouble count becomes [10] without being cleared, the trouble is determined and reactivation is not
performed.
5) For the check code display contents, confirm on the check code list.

HEAT COOL
HEAT TC / COOL TL
[˚C] Abnormal stop TC TL
a
Frequency normal down a 62°C 63°C
b
Frequency slow down b 57°C 62°C
c
Frequency hold c 55°C 60°C
d
Frequency slow up (Up to command) d 53°C 58°C
e
As command is
e 49°C 54°C

– 43 –
10. Defrost control
1) In heating operation, defrost operation is performed when TE sensor satisfies any condition in A zone to
D zone.
2) During defrosting operation, it finishes if TE sensor continued 12°C or higher for 3 seconds or continued
7°C ≤ TE < 12°C for 1 minute.
The defrost operation also finishes when it continued for 10 minutes even if TE sensor temperature was
7°C or lower.
3) After defrost operation was reset, the compressor stopped for approx. 40 seconds and then the heating
operation starts.

Start of heating operation

TE [˚C] 0 10 15 39 45 55 d [min.]

–2
–5
A zone
–10
B zone D zone

–23
∗ C zone

* The minimum TE value and To value between 10 and 15 minutes after heating operation has started
are stored in memory as TEO and ToO, respectively.

In normal To In abnormal To
A zone When status (TEO – TE) – (ToO – To) ≥ 3˚C When status (TEO – TE) ≥ 3˚C
continued for 20 seconds continued for 20 seconds
B zone When status (TEO – TE) – (ToO – To) ≥ 2˚C When status (TEO – TE) ≥ 2˚C
continued for 20 seconds continued for 20 seconds
C zone When status (TE ≤ –23˚C) continued for 20 seconds
D zone When compressor operation status of TE < –2˚C is calculated by d portion

4) The time of above d can be changed by J805 J806 d

exchanging jumper [J805] with [J806] of the 150 minutes
outdoor control P.C. board. Setting at shipment
(Setting at shipment: 150 minutes) × 90 minutes
× 60 minutes
× × 30 minutes

: Short circuit, × : Open

11. High-pressure switch/Compressor case thermostat control
1) When the high-pressure switch or the compressor case thermostat operates, the operation of the
compressor is terminated.
2) The compressor restarts after 5 minutes using [1] as a trouble count.
After restart, the trouble count is cleared when operation continues for 10 minutes or more.
3) A trouble is confirmed with the trouble count [10].
4) For the indicated contents of trouble, confirm on the check code list.

– 44 –
 8. TROUBLESHOOTING
8-1. Summary of Troubleshooting
<Wired remote controller type>
1. Before troubleshooting
1) Required tools/instruments
• + and – screwdrivers, spanners, long-nose pliers, nippers, push pins for reset switch
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
a) The following operations are normal.
1. Compressor does not operate.
• Is the air conditioner being controlled by the 3-minute protective function?
• Is it in standby status though the room temperature has reached the setup temperature?
• Is it being operated in timer mode or fan mode?
• Is an overflow trouble detected on the indoor unit?
• Is the remote controller set in “heating” under the high outside air temperature?
2. Indoor fan does not operate.
• Is the air conditioner being controlled by the cool air discharge preventive function in “heating”?
3. Outdoor fan does not operate or fan speed changes.
• Does high-temperature release operation control work in heating operation?
• Does outside low-temperature operation control work in cooling operation?
• Is defrost operation performed?
4. ON/OFF operation cannot be performed from remote controller.
• Is it being operated by the central control system?
• Is an automatic address being set up?
(When the power is turned on at the first time or when indoor unit address setting is changed, the
operation cannot be performed for maximum approx. 5 minutes after power-ON.)
• Is being carried out a test run by operation of the outdoor unit?
5. LED for the indoor and outdoor communication does not flash.
∗ service switches (SW01 or SW02) on the outdoor unit allow
• Does standby power saving operation control work?
(LED does flash, when the inside and outside communication is being stopped during the standby
power saving control. Operating service switches (SW01 or SW02) on the outdoor unit allow to
restart the communication.)
b) Did you return the wiring to the initial positions?
c) Are connecting wiring of indoor unit and remote controller correct?

2. Troubleshooting procedure
When a trouble occurred, check the parts along with the following procedure.

Trouble → Confirmation of check code display → Check trouble position and parts.
on wired remote controller

NOTE
For cause of a trouble except the items to be checked, miss diagnosis of microcomputer due to outer noise or
power conditions is considered. If there is any noise source, change the wires of the remote controller to shield
wires.

– 45 –
<Wireless remote controller type>

1. Before troubleshooting
1) Required tools/instruments
• + and – screwdrivers, spanners, long-nose pliers, nippers, etc.
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
a) The following operations are normal.
1. Compressor does not operate.
• Is the air conditioner being controlled by the 3-minute protective function?
• Is it in standby status though the room temperature has reached the setup temperature?
• Is it being operated in timer mode or fan mode?
• Is the remote controller set in “heating” under the high outside air temperature?
2. Indoor fan does not operate.
• Is the air conditioner being controlled by the cool air discharge preventive function in “heating”?
3. Outdoor fan does not operate or fan speed changes.
• Does high-temperature release operation control work in heating operation?
• Does outside low-temperature operation control work in cooling operation?
• Is defrost operation performed?
4. ON/OFF operation cannot be performed from remote controller.
• Is the air conditioner in forced operation?
• Is it being operated by the central control system?
• Is an automatic address being set up?
(When the power is turned on at the first time or when indoor unit address setting is changed, the
operation cannot be performed for maximum approx. 5 minutes after power-ON.)
• Is a test run of the air conditioner being carried out?
5. LED for the indoor and outdoor communication does not flash.
∗ LED is placed on the outdoor unit control board. (CDB P.C. board)
• Does standby power saving operation control work?
(LED does flash, when the inside and outside communication is being stopped during the standby
power saving control. Operating service switches (SW01 or SW02) on the outdoor unit allow to
restart the communication.)
b) Did you return the wiring to the initial positions?
c) Are connecting wires between indoor unit and receiving unit correct?

2. Troubleshooting procedure
When a trouble occurred, check the parts along with the following procedure.

Check trouble
Trouble → Confirmation of lamp display →
position and parts.

NOTE
For cause of a trouble except the items to be checked, miss diagnosis of microcomputer due to outer noise or
power conditions is considered. If there is any noise source, change the wires of the remote controller to shield
wires.

– 46 –
Outline of troubleshooting
The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with
the following method.

Method to judge the troubleshooting by flashing indication on indoor unit lamp display
(the signal receiving unit of wireless remote controller)
When the protective function operates the self-diagnosis contents appear in flashing indication on indoor unit
lamp display.

: Go off, : Go on, : Flash (0.5 sec.)

Lamp indication Check code Cause of trouble occurrence

Operation Timer Ready

— Power supply OFF or miss-wiring between receiving unit and indoor unit
No indication at all

E01 Receiving trouble

Receiving unit
Sending trouble Miss-wiring or wire connection trouble
E02
between receiving unit and indoor unit
E03 Communication stop
Operation Timer Ready
E08 Duplicated indoor unit No.
Setup trouble
E09 Duplicated header units of remote controller
Flash
E10 Communication trouble between CPUs on indoor unit P.C. board

Wire connection trouble between indoor units, Indoor power OFF

E18 (Communication stop between indoor header and follower or between header
and follower indoor twin)
Operation Timer Ready
Miss-wiring between indoor unit and outdoor unit or connection trouble
E04
(Communication stop between indoor and outdoor units)
Flash

Operation Timer Ready P01

Overflow was detected.
P10 Protective device of indoor unit worked.
Indoor DC fan trouble
Alternate flash P12

P03 Outdoor unit discharge temp. trouble Protective device of ∗1

P04 Outdoor high pressure system trouble outdoor unit worked.

P05
Negative phase detection trouble
P07 Heat sink overheat trouble Outdoor unit trouble
Gas leak detection trouble
Operation Timer Ready P15

P19 4-way valve system trouble (Indoor or outdoor unit judged.)

Alternate flash P20 Outdoor unit high pressure protection

P22
Outdoor unit: Outdoor unit trouble
Protective device of
P26 Outdoor unit: Inverter Idc operation ∗1
outdoor unit worked.
Outdoor unit: Position detection trouble
P29

P31 Stopped because of trouble of other indoor unit in a group

(Check codes of E03/L03/L07/L08)

– 47 –
 Lamp indication Check code Cause of trouble occurrence

Operation Timer Ready F01

Heat exchanger sensor (TCJ) trouble
F02 Heat exchanger sensor (TC) trouble Indoor unit sensor trouble
Room air temperature sensor (TA) trouble
Alternate flash P10

F04

F06 Discharge temp. sensor (TD) trouble

Temp. sensor (TE) trouble
Operation Timer Ready F07
Temp. sensor (TL) trouble
F08 Temp. sensor (TO) trouble Sensor trouble of outdoor unit ∗1
Temp. sensor (TS) trouble
Alternate flash F12
Temp. sensor (TH) trouble
F13 Temp. sensor miss-wiring (TE, TS)
F15

Operation Timer Ready

F29 Indoor EEPROM trouble

Simultaneous flash

Operation Timer Ready

F31 Outdoor EEPROM trouble

Simultaneous flash

H01
Compressor break down
Operation Timer Ready H02 Outdoor compressor system trouble ∗1
Compressor lock
H03 Current detection circuit trouble } Power supply, outdoor P.C. board trouble
Case thermostat worked. } Compressor overheat, outdoor wiring trouble
Flash H04
PS pressure sensor trouble Outdoor unit
low pressure protective operation low pressure system trouble
H06

L03 Duplicated header indoor units

There is indoor unit of group connection → AUTO address
Operation Timer Ready L07 in individual indoor unit.
* If group construction and
Unsetting of group address address are not normal
L08 Missed setting when power supply turned on,
Simultaneous flash (Unset indoor capacity) automatically goes to address
setup mode.
L09

L10 Unset model type (Service board)

Operation Timer Ready L20 Duplicated indoor central addresses

L29 Outdoor unit and other trouble

Simultaneous flash L30 Outside interlock trouble

L31 Negative phase trouble

∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.

– 48 –
Others (Other than Check Code)

Lamp indication Check code Cause of trouble occurrence

Operation Timer Ready

— During test run

Simultaneous flash

Operation Timer Ready

Disagreement of cool/heat
— (Automatic cool/heat setting to automatic cool/heat prohibited model, or
setting of heating to cooling-only model)
Alternate flash

– 49 –
8-1-1. Monitor Function of Remote Controller
Calling of sensor temperature display
<Contents>
Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service
monitor mode from the remote controller.
<Procedure>

1 Push + buttons simultaneously for 4 seconds to

call the service monitor mode.
The service monitor goes on, the header indoor unit No. is
displayed at first and then the temperature of CODE No. 00 is
displayed. TEMP. ON / OFF

Ø TIMER SET FAN MODE

2 Push temperature set buttons and then change FILTER

L
TIME SAVE
A VENT

the CODE No. of data to be monitored. RESET TEST SET CL SWING/FIX UNIT
T LOUVER

The CODE No. list is shown below.

2 4 1 3
<Operation procedure>

1 2 3 4
Returned to usual display

CODE No. Data name Unit CODE No. Data name Unit
01 Room temperature ˚C 60 Outdoor heat exchanger (Coil) temperature (TE) ˚C
(Remote controller) 61 Outside temperature (TO) ˚C
02 Indoor room air temperature (TA) ˚C
Outdoor unit data

62 Compressor discharge temperature (TD) ˚C

Indoor unit data

03 Indoor heat exchanger (Coil) ˚C 63 Compressor suction temperature (TS) ˚C

temperature (TCJ)
65 Heat sink temperature (THS) ˚C
04 Indoor heat exchanger (Coil) ˚C
temperature (TC) 6A Operation current (× 1/10) A
07 Indoor fan revolution frequency rpm 6D Outdoor heat exchanger (Coil) temperature (TL) ˚C
F2 Indoor fan calculated operation time ×100h 70 Compressor operation frequency rps
F3 Indoor unit fan cumulative operating hours ×1h 72 Outdoor fan revolution frequency (Lower) rpm
F8 Indoor discharge temperature ˚C 73 Outdoor fan revolution frequency (Upper) rpm
F1 Compressor calculated operation time ×100h

Ø
3 Push button to select the indoor unit to be monitored.
UNIT LOUVER

Each data of the indoor unit and its outdoor units can be monitored.

Ø
4 Pushing button returns the status to the usual display.
∗1 The indoor discharge temperature of CODE No. [F8] is the estimated value from TC or TCJ sensor.
Use this value to check discharge temperature at test run.
(A discharge temperature sensor is not provided to this model.)
• The data value of each item is not the real time, but value delayed by a few seconds to ten-odd seconds.

– 50 –
 Check Code List (Outdoor)
:Go on, : Flash, : Go off
ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED
Remote Sensor lamp part
controller Automatic Operation
Block indication Representative trouble position Detection Explanation of trouble contents reset continuation
indication
Operation Timer Ready Flash
F04 ALT Outdoor unit Discharge temp. sensor (TD) trouble Outdoor Open/Short-circuit of discharge temp. sensor was detected. — —
Open/Short-circuit of heat exchanger temp. sensor was detected.
F06 ALT Outdoor unit Temp. sensor (TE, TS, TL) trouble Outdoor Miss-wiring between TE sensor and TS sensor — —
F08 ALT Outdoor unit Outside temp. sensor (TO) trouble Outdoor Open/Short-circuit of outside temp. sensor was detected.  
F07 ALT Outdoor unit Temp. sensor (TL) trouble Outdoor Open/Short-circuit of heat exchanger temp. sensor was detected. — —
F12 ALT Outdoor unit Temp. sensor (TS) trouble Outdoor Open/Short-circuit of suction temp. sensor was detected. — —
F13 ALT Outdoor unit Temp. sensor (TH) trouble Outdoor Open/Short-circuit of heat sink temp. sensor (Board installed) was detected. — —
F15 ALT Outdoor unit Misconnection of temp. sensor (TE, TS) Outdoor Misconnection of outdoor heat exchanger temp. sensor and suction temp. sensor was detected. — —
F31 SIM Outdoor unit EEPROM trouble Outdoor Outdoor P.C. board part (EEPROM) trouble was detected. — —
When reached min-Hz by current release control, short-circuited current (Idc) after
H01 Outdoor unit Compressor break down Outdoor DC excitation was detected. — —
H02 Outdoor unit Compressor lock Outdoor Compressor lock was detected. — —
H03 Outdoor unit Current detection circuit trouble Outdoor Current detection circuit trouble — —
H04 Outdoor unit Case thermostat operation Outdoor Case thermostat operation was detected. — —
L10 SIM Outdoor unit Setting trouble of service P.C. board type Outdoor When outdoor service P.C. board was used, model type select jumper setting was inappropriate. — —
1) Trouble parts on outdoor P.C. board (MCU communication, EEPROM, TH sensor trouble)
L29 SIM Outdoor unit Other outdoor unit trouble Outdoor 2) When outdoor service P.C. board was used, model type selection was inappropriate. — —
Operation Timer Ready Flash 3) Other trouble (Heat sink abnormal overheat, gas leak, 4-way valve inverse trouble) was detected.
P03 ALT Outdoor unit Discharge temp. trouble Outdoor Trouble was detected by discharge temp. release control. — —
Outdoor unit When case thermostat worked, trouble was detected by high release control from indoor/
P04 ALT High pressure system trouble, Power supply voltage trouble Outdoor outdoor heat exchanger temp. sensor. Power supply voltage trouble — —
P05 ALT Power supply trouble Outdoor Power supply voltage trouble — —
P07 ALT Outdoor unit Heat sink overheat Outdoor Abnormal overheat was detected by outdoor heat sink temp. sensor. — —

– 51 –
P15 ALT Gas leak detection Outdoor Abnormal overheat of discharge temp. or suction temp. was detected. — —
P20 ALT Outdoor unit High pressure system trouble Outdoor Trouble was detected by high release control from indoor/outdoor heat exchanger temp. sensor. — —
P22 ALT Outdoor unit Outdoor fan trouble Outdoor Trouble (Over-current, lock, etc.) was detected on outdoor fan drive circuit. — —
P26 ALT Outdoor unit Inverter Idc operation Outdoor Short-circuited protective operation of compressor drive circuit element (IPM) worked. — —
P29 ALT Outdoor unit Position detection trouble Outdoor Position detection trouble of compressor motor was detected. — —
No remote controller header unit Remote Signal was not received from indoor unit.
E01 Remote controller communication trouble controller Master remote controller was not set. (including 2 remote controllers) — —
Remote
E02 Remote controller send trouble controller Signal cannot be sent to indoor unit. — —
Regular communication trouble between indoor and
E03 remote controller Indoor No communication from remote controller and network adapter  —
E04 Indoor/Outdoor serial trouble Indoor Serial communication trouble between indoor and outdoor  —
E08 Duplicated indoor addresses  Indoor Same address as yours was detected. 
Remote In 2-remote controller control, both were set as header.
E09 Duplicated master remote controllers controller (Indoor header unit stops warning and follower unit continues operation.) — —
E10 Communication trouble between CPU Indoor MCU communication trouble between main motor and micro computer 
Regular communication trouble between header and Regular communication was impossible between header and follower indoor units.
E18 follower indoor units Indoor Communication between twin header (Master unit) and follower (sub unit) was impossible.  —
L03 SIM Duplicated indoor header units  Indoor There are multiple header units in a group. — —
L07 SIM There are group cable in individual indoor unit.  Indoor When even one group connection indoor unit exists in individual indoor unit. — —
L08 SIM Unset indoor group address  Indoor Indoor address group was unset. — —
L09 SIM Unset indoor capacity Indoor Capacity of indoor unit was unset. — —
L30 SIM Outside trouble input to indoor unit (Interlock) Indoor Abnormal stop by CN80 outside trouble input — —
Indoor In heating operation, trouble was detected by temp. down of indoor heat exchanger or temp. up
P19 ALT 4-way valve inverse trouble Outdoor of TE, TS.  —

 When this warning was detected before group construction/address check finish at power supply was turned on, the mode shifts automatically to AUTO address setup mode.
: It is based on a situation.
 :Go on, : Flash, : Go off
ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED
Remote Sensor lamp part
controller Automatic Operation
Block indication Representative trouble position Detection Explanation of trouble contents reset continuation
indication
Operation Timer Ready Flash
F01 ALT Indoor unit Heat exchanger sensor (TCJ) trouble Indoor Open/Short-circuit of heat exchanger (TCJ) was detected.  —
F02 ALT Indoor unit Heat exchanger sensor (TC) trouble Indoor Open/Short-circuit of heat exchanger (TC) was detected.  —
F10 ALT Indoor unit Room air temp. sensor (TA) trouble Indoor Open/Short-circuit of room air temp. (TA) was detected.  —
F29 SIM Indoor unit Other indoor P.C. board trouble Indoor EEPROM trouble (Other trouble may be detected. If no trouble, automatic address is repeated. — —
P01 ALT Indoor unit Indoor fan trouble Indoor Indoor AC fan trouble was detected. (Fan thermal relay worked.) — —
P10 ALT Indoor unit Overflow detection Indoor Float switch worked. — —
P12 ALT Indoor unit Indoor fan trouble Indoor Indoor fan trouble (Over-current / Lock, etc.) was detected. — —
P31 ALT Other indoor unit trouble Indoor Other indoor under condition of warning in group. E03/L07/L03/L08 warning  —
Sub remote controller trouble in a group
— By unit with warning No. ALT Trouble in indoor group Network adapter (Details of remote controller are displayed with unit No. Only central control side is displayed.) — —
Network adapter/ Communication trouble of central control system signal
— — LAN system communication trouble Center ∗ Is not displayed on the remote controller  
Network adapter/
L20 SIM LAN system communication trouble Center Duplicated indoor address of central control system communication  —
— — There are multiple communication adapters. Network adapter There are multiple communication adapters on remote controller communication line.  

– 52 –
Check code table
The contents of trouble detected by indoor unit

Operation of diagnostic function

Check Status of Judgment and measures

Cause of operation Condition
code air conditioner

No communication from remote 1. Check cables of remote controller and communication adapters.
Stop Displayed when
E03 controller (including wireless) and trouble is • Remote controller LCD display OFF (Disconnection)
(Automatic reset)
communication adapter detected • Central remote controller [97] check code

The serial signal is not output from 1. Outdoor unit does not completely operate.
outdoor unit to indoor unit. • Inter-unit wire check, correction of miss-wiring.
• Miss-wiring of inter-unit wire Displayed when • Check outdoor P.C. board. Correct wiring of P.C. board.
Stop
E04 • Serial communication circuit trouble (Automatic reset) trouble is
detected 2. When outdoor unit normally operates
of outdoor P.C. board
• Check P.C. board (Indoor receiving / Outdoor sending).
• Serial communication circuit trouble
of indoor P.C. board

E08 Duplicated indoor unit address 1. Check whether remote controller connection (Group/Individual)
was changed or not after power supply turned on
L03 Duplicated indoor header unit Displayed when (Finish of group construction/Address check).
Stop trouble is * If group construction and address are not normal when the
L07 There is group wire in individual indoor detected power has been turned on, the mode automatically shifts to
unit. address setup mode. (Resetting of address)

L08 Unset indoor group address

Displayed when
L09 1. Set indoor capacity (DN=11)
Unset indoor capacity Stop trouble is
detected
Displayed when 1. Check outside devices.
L30 Abnormal input of outside interlock Stop trouble is
detected 2. Check indoor P.C. board.

1. Trouble of drain pump

Float switch operation Displayed when
2. Clogging of drain pump
P10 • Float circuit, Disconnection, Stop trouble is
detected 3. Check float switch.
Coming-off, Float switch contact
trouble 4. Check indoor P.C. board.

1. Position detection trouble

Displayed when
trouble is 2. Over-current protective circuit of indoor fan driving unit operated.
P12 Indoor DC fan trouble Stop
detected 3. Indoor fan locked.
4. Check indoor P.C. board.
4-way valve system trouble 1. Check 4-way valve.
Displayed when
• After heating operation has started, Stop trouble is 2. Check indoor heat exchanger (TC/TCJ).
P19 indoor heat exchangers temp. is (Automatic reset) detected
down. 3. Check indoor P.C. board.

Stop Displayed when 1. Judge follower unit while header unit is [E03], [L03], [L07] or [L08].
P31 Unit automatically stops while warning (Follower unit) trouble is
is output to other indoor units. 2. Check indoor P.C. board.
(Automatic reset) detected

Coming-off, disconnection or short- Displayed when 1. Check indoor heat exchanger temp. sensor (TCJ).
F01 Stop trouble is
circuit ofindoor heat exchanger temp. 2. Check indoor P.C. board.
(Automatic reset) detected
sensor (TCJ)

Coming-off, disconnection or short- Displayed when 1. Check indoor heat exchanger temp. sensor (TC).
F02 Stop trouble is
circuit ofindoor heat exchanger temp. 2. Check indoor P.C. board.
(Automatic reset) detected
sensor (TC)

Coming-off, disconnection or short- Displayed when 1. Check indoor room air temp. sensor (TA).
F10 Stop trouble is
circuit of indoor room air temp. sensor 2. Check indoor P.C. board.
(Automatic reset) detected
(TA)

Indoor EEPROM trouble Stop Displayed when 1. Check indoor EEPROM. (including socket insertion)
F29 (Automatic reset) trouble is
• EEPROM access trouble detected 2. Check indoor P.C. board.

Communication trouble between indoor Displayed when 1. Check indoor P.C. board.
MCU Stop trouble is
E10 (Automatic reset)
• Communication trouble between fan detected
driving MCU and main MCU

Regular communication trouble between Displayed when 1. Check remote controller wiring.
Stop trouble is 2. Check indoor power supply wiring.
E18 indoor header and follower units and
(Automatic reset) detected
between master and sub units 3. Check indoor P.C. board.

– 53 –
 Operation of diagnostic function
Check code Status of Judgment and measures
Cause of operation air conditioner Condition
Indoor unit
Disconnection, short-circuit of Displayed when 1. Check discharge temp. sensor (TD).
F04 Stop
discharge temp. sensor (TD) trouble is detected 2. Check outdoor P.C. board (MCC-1599).
Disconnection, short-circuit of outdoor Displayed when 1. Check temp. sensor (TE).
F06 Stop
temp. sensor (TE) trouble is detected 2. Check outdoor P.C. board (MCC-1599).
Disconnection, short-circuit of outdoor Displayed when 1. Check temp. sensor (TL).
F07 Stop
temp. sensor (TL) trouble is detected 2. Check outdoor P.C. board (MCC-1599).
Disconnection, short-circuit of suction Displayed when 1. Check suction temp. sensor (TS).
F12 Stop
temp. sensor (TS) trouble is detected 2. Check outdoor P.C. board (MCC-1599).
Miss-mounting of outdoor temp. Displayed when 1. Check temp. sensor (TE, TS).
F15 Stop
sensor (TE, TS) trouble is detected 2. Check outdoor P.C. board (MCC-1599).
Disconnection, short-circuit of outside Displayed when 1. Check outside temp. sensor (TO).
F08 Continue
temp. sensor (TO) trouble is detected 2. Check outdoor P.C. board (MCC-1599).
Disconnection, short-circuit of heat Displayed when 1. Check outdoor P.C. board (MCC-1599).
F13 Stop
sink temp. sensor (TH) trouble is detected (Q201 is incorporated in TH sensor.)
Displayed when 1. Check outdoor P.C. board (MCC-1599).
F31 Outdoor P.C. EEPROM trouble Stop
trouble is detected
Displayed when 1. Outdoor service P.C. board
L10 Unset jumper of service P.C. board Stop
trouble is detected Check model type setting jumper wire.
1. Check outdoor P.C. board
Communication trouble between Displayed when (MCC-1596, MCC-1597, MCC-1599).
L29 Stop
outdoor P.C. board MCU trouble is detected 2. Connection check between CN802 of MCC-1599 and
CN504 of MCC-1597, and also connection check
between CN505 of MCC-1597 and CN851 of MCC-1596.
Heat sink overheat trouble 1. Check screw tightening between PC. Board and heat
Displayed when
P07 ∗ Heat sink temp. sensor detected Stop sink and check radiator grease (MCC-1599).
trouble is detected
over specified temperature. 2. Check heat sink blast path.
1. Check gas leak, recharge
Detection of gas leak 2. Check full open of service valve.
∗ Discharge temp. sensor (TD), Displayed when 3. Check PMV (Pulse Motor Valve).
P15 Suction temp. sensor (TS) detected Stop
trouble is detected 4. Check broken pipe.
temperature over specified temp. 5. Check discharge temp. sensor (TD), suction temp.
sensor (TS).
4-way valve inverse trouble 1. Check operation of 4-way valve.
∗ After heating operation has started, 2. Check outdoor heat exchanger (TE), suction temp.
indoor heat exchanger temp. lowers sensor (TS).
under the specified temp. Displayed when 3. Check indoor heat exchanger sensor (TC).
P19 Stop
∗ After heating operation has started, trouble is detected 4. Check 4-way valve coil.
outdoor heat exchanger / suction 5. Check PMV (Pulse Motor Valve).
temp. rises over the specified temp.
Compressor break down 1. Check power supply voltage. (AC342 to 457V)
∗ Although operation has started, Displayed when 2. Overload operation of refrigerating cycle
H01 operation frequency decreases and Stop trouble is detected
operation stops.
Compressor lock 1. Trouble of compressor (Lock, etc.): Replace compressor.
Displayed when
H02 ∗ Over-current detection after Stop 2. Wiring trouble of compressor (Open phase)
trouble is detected
compressor start-up
Displayed when 1. Check outdoor P.C. board (MCC-1599).
H03 Current detection circuit trouble Stop
trouble is detected (AC current detection circuit)
1. Check connection of Ps sensor connector.
2. Check failure of Ps sensor.
Displayed when
F23 Ps sensor trouble Stop 3. Check compressing power trouble of compressor.
trouble is detected
4. Check 4-way valve trouble.
5. Check outdoor P.C. board trouble.

– 54 –
 Operation of diagnostic function
Check code Status of Judgment and measures
Cause of operation air conditioner Condition
Indoor unit
Discharge temp. trouble 1. Check refrigerating cycle (Gas leak)
P03 ∗ Discharge temp. (TD) over Stop Displayed when 2. Trouble of electronic expansion valve
specified value was detected. trouble is detected 3. Check discharge temp. sensor (TD).

1. Check case thermostat and connector.

Case thermostat operation Displayed when 2. Check gas leak, recharge
H04 Stop
∗ Abnormal overheat of compressor trouble is detected 3. Check full open of service valve.
4. Check PMV (Pulse Motor Valve).
5. Check broken pipe.
1. Check service valves are fully opened.
(Gas side, Liquid side)
2. Check of outdoor fan operation.
3. Check motor trouble of outdoor fan.
4. Check clogging of outdoor PMV.
Displayed when
P04 High pressure SW system trouble Stop 5. Check clogging of heat exchanger in indoor/outdoor units.
trouble is detected
6. Short-circuit status of suction/discharge air in outdoor unit.
7. Check outdoor P.C. board trouble.
8. Check fan system trouble (Cause of air volume drop)
at indoor side.
9. Check PMV opening status in indoor unit.
Displayed when 1. Check power supply voltage. AC342 to 457V
Power supply voltage trouble Stop
trouble is detected
1. Check open phase of 3-phase power supply.
Displayed when
Open phase of 3-phase power supply Stop 2. Black lead wire to be connected to CN03 of MCC-1596
trouble is detected
does not pass through T611.
1. Check service valves are fully opened.
(Gas side, Liquid side)
P05 2. Check of outdoor fan operation.
3. Check motor trouble of outdoor fan.
4. Check clogging of outdoor PMV.
Displayed when
High pressure SW system trouble Stop 5. Check clogging of heat exchanger in indoor/outdoor units.
trouble is detected
6. Short-circuit status of suction/discharge air in outdoor unit.
7. Check outdoor P.C. board trouble.
8. Check fan system trouble (Cause of air volume drop)
at indoor side.
9. Check PMV opening status in indoor unit.
1. Check outdoor heat exchanger sensor (TL).
High pressure protective operation 2. Check indoor heat exchanger sensor (TC, TCJ).
∗ During cooling operation, outdoor 3. Check full open of service valve.
temp. sensor (TL) detected Displayed when 4. Check indoor/outdoor fan.
P20 temperature over specified temp. Stop
trouble is detected 5. Check PMV (Pulse Motor Valve).
∗ During heating operation, indoor 6. Check clogging and short-circuit of indoor/outdoor heat
temp. sensor (TC, TCJ) detected exchanger.
temperature over specified temp. 7. Overcharge of refrigerant. Recharge
1. Check lock of fan motor.
Displayed when 2. Check power supply voltage between L2 and N.
P22 Outdoor fan system trouble Stop AC342 to 457V
trouble is detected
3. Check outdoor P.C. board.
1. When performing operation while taking-off compressor
wire, P26 trouble occurs. Check control P.C. board
Short-circuit trouble of compressor Displayed when (MCC-1599).
P26 Stop
driving element trouble is detected 2. When performing operation while taking-off compressor
wire, an trouble does not occur.
(Compressor layer short-circuit )
Displayed when 1. Check control P.C. board (MCC-1599).
P29 Position detection circuit trouble Stop
trouble is detected

– 55 –
The contents of trouble detected by remote controller or central controller (TCC-LINK)
Operation of diagnostic function
Status of Judgment and measures
Check code Cause of operation air conditioner Condition

Power supply trouble of remote controller, Indoor

EEPROM trouble
Not displayed No communication with header indoor unit 1. Check remote controller inter-unit wiring.
at all • Remote controller wiring is not correct. 2. Check remote controller.
(Operation • Power of indoor unit is not turned on. Stop — 3. Check indoor power wiring.
on remote • Automatic address cannot be completed. 4. Check indoor P.C. board.
controller is 5. Check indoor EEPROM.
impossible.) (including socket insertion)
→ Automatic address repeating phenomenon
generates.
Stop Receiving trouble from remote controller
No communication with header indoor unit Displayed
E01 (Automatic reset) 1. Check remote controller inter-unit wiring.
• Disconnection of inter-unit wire between
∗1 remote controller and header indoor unit ∗ If central controller when trouble 2. Check remote controller.
exists, operation is detected 3. Check indoor power wiring.
(Detected by remote controller side) continues. 4. Check indoor P.C. board.
Stop Sending trouble of remote controller
(Automatic reset) Displayed 1. Check sending circuit inside of remote
Signal send trouble to indoor unit
E02 ∗ If central controller when trouble controller.
(Detected by remote controller side)
exists, operation is detected → Replace remote controller.
continues.
1. In 2-remote controllers (including wireless),
Stop Displayed
There are multiple master remote controllers. there are multiple header units.
E09 (Follower unit when trouble
(Detected by remote controller side) Check that there are 1 master remote
continues operation.) is detected
controller and other sub remote controllers.
1. Check setting of central control system
L20 Duplicated indoor central addresses on Displayed
Stop network address. (Network adapter SW01)
communication of central control system when trouble 2. Check network adapter P.C. board.
Central (Automatic reset)
(Detected by indoor/central controller side) is detected
controller
L20
— 1. Check communication wire / miss-wiring
∗2 2. Check communication (U3, U4 terminals)
3. Check network adapter P.C. board.
Central Communication circuit trouble of central Displayed
Continues 4. Check central controller (such as central
controller controller when trouble
(By remote controller) is detected control remote controller, etc.)
(Send) (Detected by central controller side)
5. Check terminal resistance. (TCC-LINK)
C05
(Receive)
C06
Check the check code of the corresponding
—
unit from remote controller.
Continuation/Stop Displayed
Indoor Gr sub unit trouble (According
Central when trouble
(Detected by central controller side) to each case)
controller is detected
P30

∗1 The check code cannot be displayed by the wired remote controller.

(Usual operation of air conditioner becomes unavailable.)
For the wireless models, a trouble is notified with indication lamp.
∗2 This trouble is related to communication of remote controller (A, B), central system (TCC-LINK U3, U4),
and [E01], [E02], [E03], [E09] or [E18] is displayed or no check display on the remote controller according
to the contents.

– 56 –
8-2. Diagnostic Procedure for Each Check Code (Outdoor Unit)
1) This section describes the diagnostic method for each check code displayed on the remote controller.
2) In some cases, a check code indicates multiple symptoms.
In this case, confirm LED display on the outdoor P.C. board to narrow the contents to be confirmed.
3) The display on the remote controller may differ from that of LED.
The check code on the remote controller is displayed only when the same trouble occurred continuously by
multiple times while LED of the outdoor P.C. board is displayed when a trouble occurred once.

LED display on outdoor P.C. board

Dip switch setup <Latest trouble display>

• When turning on 1) only of SW803, the latest trouble Only 1) of SW803 is ON.
is displayed. As the memory is stored, it can be
ON
confirmed even if the power supply is turned off
once. (excluding outside temp. sensor (TO) trouble) 1 2 3 4
• When the work finished or the outdoor temp.
sensor (TO) trouble was found, turn off all of SW803. <Trouble display, which occurs at present>
(The trouble which occurs at present is displayed.) All SW803 are OFF. (Initial status)
ON

1 2 3 4

Display selection <Display 1> <Display 2>

• When even a LED of D800 to D804 (Yellow) (No trouble) (Trouble occurred) (Push SW800)
goes on, trouble occurrence is indicated. <Display 1> D805 (Green)

• If pushing the button switch SW800 for 1 second D804 (Yellow)

under the above condition, the yellow LED is D803 (Yellow)
displayed with flashing. <Display 2> D802 (Yellow)
D801 (Yellow)
• When pushing SW800 for 1 second again, the
status returns to <Display 1>. D800 (Yellow)
(Example of discharge temp. sensor trouble)
• The trouble contents can be confirmed by combining
: Go off, : Go on, : Flash
<Display 1> and <Display 2>.

Check Outdoor Check and troubleshooting

code LED display (Item without special mention Indicates part of outdoor unit.)

[E04] — [Indoor/Outdoor communication trouble]

Is setting of group address NO

of remote controller correct? Check "check code [14]".

YES

Are inner wiring and NO Correct wiring

inter-unit cables (1, 2, 3) normal? and inter-unit cable.

YES

Are connection of CN01 of MCC-1599 and NO Correct wiring of connectors

wiring of terminal blocks (1, 2, 3) normal? and terminal blocks.

YES

Does D502 (Orange LED) flash after NO

power supply is turned on again? Replace indoor P.C. board.

YES

Replace outdoor P.C. board (MCC-1599).

– 57 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[F04] <Display 1> <Display 2> [Discharge temp. sensor (TD) trouble]

Is CN603 connection normal? NO Correct connector.

Is resistance value of TD sensor normal? Sensor trouble → Replace

YES

Replace outdoor P.C. board

(MCC-1599).

[F06] • There is a possibility that it is one of the following trouble.

Confirm LED on outdoor P.C. board to judge which trouble it is.
Heat exchanger temp. sensor (TE) trouble, Heat exchanger temp. sensor (TL) trouble,
Suction temp. sensor (TS) trouble, Miss-wiring of heat exchanger sensor (TE, TS)

<Display 1> <Display 2> Heat exchanger temp. sensor (TE) trouble]

Is CN601 connection normal? NO Correct connector.

Is resistance value of TE sensor normal?

YES

Replace outdoor P.C. board

(MCC-1599).

<Display 1> <Display 2> [Heat exchanger temp. sensor (TL) trouble] → Refer to [F07] column.

<Display 1> <Display 2> [Suction temp. sensor (TS) trouble] → Refer to [F12] column.

<Display 1> <Display 2> [Miss-wiring of heat exchanger sensor (TE, TS)] → Refer to [F15] column.

[F07] <Display 1> <Display 2> [Heat exchanger temp. sensor (TL) trouble]

Is CN604 connection normal? NO Correct connector.

Is resistance value of TL sensor normal? Sensor trouble → Replace

YES

Replace outdoor P.C. board

(MCC-1599).

– 58 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[F08] <Display 1> <Display 2> [Outside air temp. sensor (TO) trouble]

Is CN602 connection normal? NO Correct connector.

Is resistance value of TO sensor normal? Sensor trouble → Replace

YES

Replace outdoor P.C. board

(MCC-1599).

[F12] <Display 1> <Display 2> [Suction temp. sensor (TS) trouble]

Is CN600 connection normal? NO Correct connector.

Is resistance value of TS sensor normal? Sensor trouble → Replace

YES

Replace outdoor P.C. board

(MCC-1599).

[F13] <Display 1> <Display 2> [Heat sink temp. sensor (TH) trouble]

Replace outdoor P.C. board

(MCC-1599).

[F15] <Display 1> <Display 2> [Miss-wiring of heat exchanger sensor (TE, TS)]

Is mounting status of NO
Correct sensor mounting.
TE and TS sensors normal?

YES

Is CN600 connection normal? NO Correct connector.

Is resistance value of TS sensor normal? Sensor trouble → Replace

YES

Is CN601 connection normal? NO Correct connector.

Is resistance value of TE sensor normal? Sensor trouble → Replace

YES

Replace outdoor P.C. board

(MCC-1599).

– 59 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[F31] <Display 1> <Display 2> [EEPROM trouble]

Replace outdoor P.C. board

(MCC-1599).

[H01] <Display 1> <Display 2> [Compressor break down]

Is power supply voltage normal? NO

Correct power supply line.
AC342 to 457V

YES

Is wire connection normal?

Compressor lead NO Check wire connection
(Board side, Compressor side), and correct it.
Reactor lead, Power supply lead

YES

YES
Is it not abnormal overload? Correct and clear the cause.

NO

Replace outdoor P.C. board

(MCC-1596).

[H02] <Display 1> <Display 2> [Compressor lock]

Is power supply voltage normal? NO

Correct power supply line.
AC342 to 457V

YES

Is wire connection normal?

Compressor lead NO Check wire connection
(Board side, Compressor side), and correct it.
Reactor lead, Power supply lead

YES
YES
Is compressor normal? Replace outdoor P.C. board.
NO
NO
Is there no refrigerant stagnation? Compressor lock → Replace

YES
NO Check TE, TS sensors and PMV.
Does PMV normally operate?
Trouble → Replace
YES

Replace outdoor P.C. board

(MCC-1596).

– 60 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[H03] <Display 1> <Display 2> [Current detection circuit trouble]

Replace outdoor P.C. board

(MCC-1596).

<Display 1> <Display 2> [Power supply trouble (Vdc)] → Refer to [P05] column.

[H04] <Display 1> <Display 2> [Case thermostat operation]

NO
Are CN609 connection Correct connector.
and case thermostat normal? Case thermostat trouble → Replace

YES
NO
Is cooling/heating operation available Replace outdoor P.C. board
when short-circuiting case thermostat? (MCC-1599).
YES
NO
Is there no gas leak? Repair trouble position.
Is it not refrigerant shortage? Recharge refrigerant.

YES
NO
Is valve fully opened? Open valve fully.

YES
NO
Is PMV normal? Replace PMV.
YES

Check crushed or broken pipe.

Trouble → Correct and Replace

[L10] <Display 1> <Display 2> [Unset model type] : Only when service P.C. board is used

Cut jumper line according

to the explanation sheet packaged
with the service P.C. board.

– 61 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[L29] ∗ There is a possibility that it is one of the following trouble.

Confirm LED on outdoor P.C. board to judge which trouble it is.
Communication trouble between MCU, Heat sink temp. sensor (TH) trouble,
EEPROM trouble, Unset model type, Heat sink overheat trouble, Gas leak
detection, 4-way valve inverse trouble

<Display 1> <Display 2> [Communication trouble between MCU]

1. Connection check between CN802 of MCC-1599 and CN504 of MCC-1597
and also connection check between CN505 of MCC-1597 and CN851 of
MCC-1596.
2. Replace outdoor P.C. board (MCC-1596, MCC-1597, MCC-1599).

<Display 1> <Display 2> [Heat sink temp. sensor (TH) trouble] → Refer to [F13] column.

<Display 1> <Display 2> [EEPROM trouble] → Refer to [F31]column.

<Display 1> <Display 2> [Unset model type] → Refer to [L10] column.

<Display 1> <Display 2> [Heat sink overheat trouble] → Refer to [P07] column.

<Display 1> <Display 2> [Gas leak detection] → Refer to [P15] column.

<Display 1> <Display 2> [4-way valve inverse trouble] → Refer to [P19] column.

– 62 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[P03] <Display 1> <Display 2> [Discharge temp. trouble]

Is there no gas leak? YES Repair trouble position.

Is refrigerant charge amount adequate? Recharge refrigerant.

NO
NO
Is PMV normal? Replace PMV.

YES
YES
Is it not abnormal overload? Correct and clear the cause.

NO

Is CN603 connection normal? NO Correct connector.

Is resistance value of TD sensor normal? Sensor trouble → Replace

YES

Replace outdoor P.C. board

(MCC-1599).

[P04] ∗ There is a possibility that it is one of the following trouble.

Confirm LED on outdoor P.C. board to judge which trouble it is. (1) high-pressure SW system trouble,
(2) power supply trouble (Vdc), (3) high-pressure protective operation, (4) case thermostat operation.

<Display 1> <Display 2> [High pressure SW system trouble]

Power supply trouble (Vdc), High pressure protective operation, Case thermostat
operation.
NO NO
Does high pressure switch Wiring check,
operate? Is circuit wiring normal? Correct.
YES YES
NO
Are parts of Parts check
high pressure switch normal? Trouble → Replace
YES
NO
Is service valve fully opened? Open service valve fully.
YES

Reset the power supply and B ← Cooling operation

then do a trial operation according
to the season. C ← Heating operation

Replace Comp. IPDU P.C. board

B Cooling operation.

NO NO
Does cooling outdoor fan Is there no fan breakage
normally operate? or coming-off?
YES YES

Repair trouble position.

Connection of connectors,
Fan IPDU, Fan motor, Wiring.

Is there any element

which blocks heat exchanger YES
Elimination of
of the outdoor unit? blocking element
Clogging of heat exchanger
Short circuit
NO

Overcharge of refrigerant/
Clogging/Pipe breakage/
Abnormal overload

– 63 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[P04]
C

Heating operation

NO Are connections of NO
Does the heating indoor fan
normally operate? connectors, capacitors
and fan motor normal?
YES
YES

Is there any element which

blocks indoor heat exchanger? YES
Filter clogging Elimination of Repair
Clogging of heat exchanger blocking element trouble position.
Short circuit

NO

Clogging by refrigerant Are characteristics NO

overcharge/Pipe breakage/ of TC and TCJ sensor
Abnormal overload resistance value normal?

YES

Replace
Replace indoor P.C. board. TC or TCJ sensor.

<Display 1> <Display 2> [Case thermostat operation] → Refer to [H04] column.

<Display 1> <Display 2> [Power supply trouble (Vdc)] → Refer to [P05] column.

<Display 1> <Display 2> [High pressure protective operation] → Refer to [P20] column.

– 64 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[P05] <Display 1> <Display 2> [Power supply trouble (Voltage trouble)]
Is there open phase YES
of the power supply? Correct wiring.

NO

Is power supply NO
voltage normal? Confirm electric construction, etc.
(AC342 to 457V)
YES
Replace outdoor P.C. board (MCC-1600).

[P07] <Display 1> <Display 2> [Heat sink overheat trouble]

Are radiation grease properly applied?

Are the screws of the motor drive element NO Apply radiation grease
Q201 on the outdoor P.C. board (MCC-1596), to objective part.
the rear side of Q201 correctly? Retightening of screws.

YES
Does something block the
NO
ventilation around the heat sink? Remove blocking matter.
Does something block air flow from the fan? Correct short-circuit.
(Short-circuit, etc.)
YES
Replace outdoor P.C. board (MCC-1596).

[P15] <Display 1> <Display 2> [Gas leak detection]

Is there gas leak? YES Repair trouble position.

Is there refrigerant shortage? Recharge refrigerant.
NO
NO
Is PMV normal? Replace PMV.
YES
NO
Is valve fully opened? Open valve fully.
YES
NO
Is there crushed pipe? Correct and replace piping.
YES
Abnormality
Check temp. sensor. Correct connector.
TD sensor CN603, TS sensor CN600 Sensor trouble → Replace
OK

Replace outdoor P.C. board (MCC-1599).

[P19] <Display 1> <Display 2> [4-way valve inverse trouble]

Is operation of Temperature sensor check

4-way valve normal? YES TE sensor CN601
(Check pipe temp., etc. in TS sensor CN600
cooling/heating operation.) Indoor TC sensor
Trouble → Correct and repair
NO

Is power supplied NO
Replace coil of 4-way valve.
to 4-way valve coil?
YES

Check operation of Abnormality

outdoor I/F (CDB) P.C. board. Replace outdoor P.C. board.

OK

Replace 4-way valve.

– 65 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[P20] <Display 1> <Display 2> [High pressure protective operation]

NO
Is valve fully opened? Open valve fully.

YES

Reset the power supply

and then perform test run Cooling season
matching to the season. Cooling operation

Heating season
Heating operation Is resistance value NO
of TL sensor correct?
(Measurement of resistance value)

YES
Replace sensor.

Are the outdoor fan appearance NO

and screw tightening normal?

YES
Check outdoor fan.
Trouble → Replace, retightening

Does the outdoor fan NO

normally operate ?

YES
Check the same items as
[P22] trouble.

Are the following items for

outdoor units correct? NO
• Clogging of heat exchanger
• Short-circuit (Air flow)

YES
Eliminate interfering element.

Check overcharge of refrigerant, clogging of cycle,

broken pipe, abnormal overload, etc.
Trouble → Correct trouble position.

Does indoor fan NO Are indoor fan motor NO

normally operate? and connector normal?

YES YES
Repair trouble position.

Are resistance values NO Replace

of indoor TC and TCJ sensor.
sensors normal?

YES
Replace indoor P.C. board.

Are the following items for

outdoor units correct? NO
• Clogging of filter Eliminate interfering element.
• Clogging of heat exchanger
• Short-circuit (Air flow)

YES
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
Trouble → Correct trouble position.

– 66 –
Check Outdoor Check and troubleshooting
code LED display (Item without special mention Indicates part of outdoor unit.)

[P22] <Display 1> <Display 2> [Fan system trouble]

Is power supply voltage normal? NO Check wiring construction.

(342 to 457V) Ask repair of power supply.
YES

Does the fan rotate without trouble when rotating

shaft of fan motor with hands during power-OFF?
Is coil resistance of fan motor correct? NO
Between red and white lead wire : 12 to 20Ω
Between white and black lead wire : 12 to 20Ω
Between black and red lead wire : 12 to 20Ω

YES
Replace fan motor.
Replace outdoor P.C. board
(MCC-1597).

Single operation check for outdoor fan

1) Set SW804 of Dip switch as the following figure and then push SW801 for
approx. 1 second to check single operation of outdoor fan. Use this method to
check which fan, upper or lower fan, has a trouble.
• When pushing SW801 for 1 second again or 2 minutes passed, the fan stops.
2) After check, turn off all Dip switch
SW804. Outdoor fan single operation

SW804 SW801
ON

Push
1 2 3 4

[P26] <Display 1> <Display 2> [Short-circuit of compressor drive element]

Is there no problem on connection NO

of compressor lead or reactor? Correct wiring.
(Check referring to Wiring diagram.)
YES

Does the same trouble occur in NO

Replace outdoor P.C. board.
operation without compressor lead?
YES

Check compressor. (layer short, etc.)

Trouble → Replace

[P29] <Display 1> <Display 2> [Position detection circuit trouble]

Replace outdoor P.C. board

(MCC-1596).

— <Display 1> <Display 2> [Other trouble] Compressor disorder due to sudden change of load, etc.
No code ∗ Although the display of outdoor LED outputs, the unit automatically restarts
and trouble is not determined.
∗ LED display also may output due to negative phase of compressor or wire
coming-off.

– 67 –
8-3. Sensor characteristics

Temperature – Resistance value characteristic table

TA, TC, TCJ, TE, TS, TO sensors TD, TL sensors

Representative value Representative value
Temperature Resistance value (kΩ) Temperature Resistance value (kΩ)
(˚C) (Minimum value) (Standard value) (Maximum value) (˚C) (Minimum value) (Standard value) (Maximum value)
0 32.33 33.80 35.30 0 150.5 161.3 172.7
10 19.63 20.35 21.09 10 92.76 99.05 105.6
20 12.23 12.59 12.95 20 58.61 62.36 66.26
25 9.75 10.00 10.25 25 47.01 49.93 52.97
30 7.764 7.990 8.218 30 37.93 40.22 42.59
40 5.013 5.192 5.375 40 25.12 26.55 28.03
50 3.312 3.451 3.594 50 17.00 17.92 18.86
60 2.236 2.343 2.454 60 11.74 12.34 12.95
70 1.540 1.623 1.709 70 8.269 8.668 9.074
80 1.082 1.146 1.213 80 5.925 6.195 6.470
90 0.7740 0.8237 0.8761 90 4.321 4.507 4.696
100 0.5634 0.6023 0.6434 100 3.205 3.336 3.468

TA, TC, TCJ, TE, TS, TO sensors

40

30
Resistance (kΩ)

20

10

0
0 10 20 30 40 50 60 70 80 90 100
Temperature (˚C)

Pressure sensor I/O wire

connecting table
TD, TL sensors
Pin No. Input/output name Lead wire
200 20
Resistance (kΩ) (50˚C or higher)
Resistance (kΩ) (50˚C or lower)

1 — —
2 OUTPUT White
3 GND Black
150 15 4 DC5V Red

100 10

50 5

0 0
0 10 20 30 40 50 60 70 80 90 100
Temperature (˚C)

∗ As TH sensor (Outdoor unit heat sink temp. sensor) is incorporated in the outdoor control P.C. board, the
resistance value cannot be measured.

– 68 –
 Table Inspection of outdoor unit main parts

No. Parts name Checking procedure

1 Compressor Measure the resistance value of each winding by using the tester.
(Model : RX420A3F-27M)
Red
Position Resistance value

Red – White

White – Black 0.79 ± 0.04 Ω

White Black
Black – Red

Under 20°C

2 Outdoor fan motor Measure the resistance value of each winding by using the tester.
(Model : ICF-280-A100-1)
Red
Position Resistance value

Red – White

White – Black 14.8 ± 1.5 Ω

White Black
Black – Red

Under 20°C

3 4-way valve coil Measure the resistance value of each winding by using the tester.
(Cooling/heating switching)
(Model : STF-H01AJ1736A1) Resistance value

1725 ± 172.5 Ω
Connector : White
Under 20°C

4 PMV coil Measure the resistance value of each winding by using the tester.
(Model : UKV-A038)
Position Resistance value
Gray – Orange 46 ± 3 Ω
Gray – Yellow 46 ± 3 Ω
Gray – Red 46 ± 3 Ω
Gray – Black 46 ± 3 Ω Under 20°C

– 69 –
 9. SETUP AT LOCAL SITE AND OTHERS
9-1. Calling of check Code History
<Contents>
The trouble contents in the past can be called.

<Procedure>
TEMP. ON / OFF

1 Push + buttons simultaneously for 4 seconds or

more to call the service check mode. TIMER SET FAN MODE

Service Check goes on, the CODE No. 01 is displayed, and then TIME SAVE
A VENT

the content of the latest alarm is displayed. The number and FILTER
L
RESET TEST SET CL SWING/FIX UNIT
T LOUVER

trouble contents of the indoor unit in which a trouble occurred are

displayed.

2 In order to monitor another check code history, push

the set temperature / buttons to change the
check code history No. (CODE No.). 2 3 1
CODE No. 01 (Latest) → CODE No. 04 (Old)
NOTE : 4 check code histories are stored in memory. <Operation procedure>

3 Pushing button returns the display to usual display. 1 2 3

REQUIREMENT Returned to usual display
Do not push button, otherwise all the check code histories of the
indoor unit are deleted.

9-2. Group Control Operation

In a group control, operation of maximum 8 indoor units can be controlled by a remote controller.
The indoor unit connected with outdoor unit (Individual/Master of twin) controls room temperature according to
setting on the remote controller.

<System example>

OUT OUT OUT OUT OUT

IN IN Master IN IN IN
1-1 2-1 3-1 4-1 7-1
Max. 8 units

Remote controller

1. Display range on remote controller

The setup range (Operation mode/Air volume select/Setup temp) of the indoor unit which was set to the
master unit is reflected on the remote controller.
2. Address setup
Turn on power of the indoor unit to be controlled in a group within 3 minutes after setting of automatic
address. If power of the indoor unit is not turned on within 3 minutes (completion of automatic address
setting), the system is rebooted and the automatic address setting will be judged again.
1) Connect 3 In/Out cables surely.
2) Check line address/indoor address/group address of the unit one by one.
3) The unit No. (line/indoor gout address) which have been set once keep the present status as a rule if the
unit No. is not duplicated with one of another unit.

– 70 –
 Indoor unit power-ON sequence

Power ON • The unit without power feed waits entirely

→ Waiting status is released by system start
• Reboot when power is fed on the way
<By feed unit>

<Automatic
address judgment>
Not normal NO
Gr construction check 3 minutes elapse

Normal YES
∗ Gr normal
1) There is no duplicated indoor unit address.
2) There is no invalid indoor unit address.
3) Individual unit and master/follower units
are not intermingled.
4) Only a unit for individual.
5) A master indoor unit and 1 or more
follower indoor units for Gr.

System start Automatic address starts.

(Approx. 1 minute up to finish)

<Initial communication>

Outdoor model distinction (10 seconds) (Indoor unit) <Cautions at test run>
Twin Master/follower distinction (Indoor unit) • Power supply/Indoor/Outdoor serial and Gr wiring: OK
Gr construction, louver information (Remote controller)
• Powers of all indoor units are turned on within 3 minutes.
• Reception time for remote controller operation
(After power supply was turned on)
1) When address is OK : Approx. 50 seconds
2) In AUTO address : Approx. 4 to 5 minutes

Remote controller operation is available.

(Approx. 50 seconds after power-ON)

<Usual regular
communication>

Regular communication between indoor units (Every 30 seconds) (Master/Follower)

Regular communication on the identical pipe (every 30 seconds) (Twin Master/Follower) (Repetition)
(When the remote controller operates, immediately communication starts.)

• In a group operation, if the indoor unit which was fed power after judgment of automatic address cannot
receive regular communication from the master unit and regular communication on identical pipe within 120
seconds after power was turned on, it reboots (system reset).
→ The operation starts from judgment of automatic address (Gr construction check) again.
(If the address of the master unit was determined in the previous time, the power fed to the master unit
and reboot works, the master unit may change though the indoor unit line address is not changed.)

– 71 –
9-3. Outdoor Unit
9-3-1. Various Setting on Outdoor Unit (Existing piping, Power save, Cooling-only, etc.)
The following settings are available by DIP switch setup and jumper line setup.

Function Set position Control contents

Turn the switch to ON when mounting a duct to the discharge port

of the outdoor unit. Add 3 taps to the upper limit value of the
outdoor fan tap.

High static The operation is performed with

pressure setup (Max: Upper fan: 890 rpm / Lower fan: 910 rpm (WF)).
SW802
ON In this case, the upper limit value of static pressure for duct is 5Pa
or less on 25°C degrees and please use straight duct.
In this case, the outdoor noise level may increase.
1 2 3 4

Turn the switch to ON when DIA 19.1 is used for the existing pipe.
Existing
High static pressure setup
piping setup In this case, the heating capacity may lower according to outside
Existing piping setup
temp. and indoor temp. in heating operation.
Power save setup
Snow-proof fan control
Turn the switch to ON when using the power save function.
Power save ∗ all are OFF at shipment.
setup The control to lower the compressor frequency (Approx. –10%) is
performed by indoor heat exchanger temp. in heating operation.

When snow enters from clearance of the fan guard or heat

exchanger into blast path and it is accumulated, the control to
Snow-proof prevent generation of motor lock is validated.
fan control When outside temp. is below 4°C though the compressor stops,
the outdoor fan operates with W5.

The defrost interval is cut to shorten it than the standard status.

Defrost J805, J806
time change For contents of control and cutting method, refer to Section
7-10. Defrost control.

When it is needed to lower the maximum value of the compressor

frequency, cut the jumper line. Max. frequency at heating is
lowered.
In this case the Max. capacity decreases.

Max. frequency Max. frequency of compressor

J807
change GP110 GP140 GP160
Model
COOL HEAT COOL HEAT COOL HEAT
Standard status 53.4 100.2 64.2 100.2 74.4 100.2
When J807 is cut 53.4 69.6 64.2 75.0 74.4 79.8

When using the air conditioner as a cooling-only conditioner, cut

Cooling-only J808 the jumper line. (An air conditioner can be changed to cooling-only
setup conditioner by “0F” of DN code on the remote controller.)

– 72 –
9-3-2. Service Support Function (LED Display, Switch Operation)
1. Outline
A various setup and operation check can be performed by DIP switches at 3 positions
(SW802, SW803, SW804) and the pushdown button switches (SW800, SW801) at 2 positions.
Operation part

Part No. Specifications Operation contents

SW800 Pushdown button switch Exchanges the displayed contents of LED (D800 to D804) on the outdoor
SW803 DIP switch control P.C. board.

SW801 Pushdown button switch

Performs the specific operation to check maintenance.
SW804 DIP switch

SW802 DIP switch Performs various initial settings. (Refer to 9-3-1.)

Display part

Part No. Specifications Operation contents

Indoor/Outdoor communication (Serial communication) signal display

D502 Orange LED
(Receive signal from indoor signal)

Indoor/Outdoor communication (Serial communication) signal display

D503 Green LED
(Send signal from outdoor signal)

Trouble display
When all SW803 are OFF, or when any of D800 to D804 goes on, LED
D800 to D804 Yellow LED
displays that the outdoor controller detects a trouble.
When status of SW803 is other than OFF, various indications are displayed.

Power-ON display
D805 Green LED When the power of the outdoor unit is turned on, LED goes on.
When SW801 and SW804 operate the specific operation, LED flashes.

∗ All LED are colorless when it goes off.

ON ON

1 2 3 4 1 2 3 4

SW804 SW805 Enlarged view of

ON ON LEDs

1 2 3 4 1 2 3 4 D805
SW802 SW803 SW800 SW801 SW806 D804
D803
LED D802
D805
D804
D803
D801
D802
D801
D800
D800
D502 D503

– 73 –
9-3-3. Others
1. Selection of LED display (SW800, SW803 operation)
1) Display selection list
The displayed contents of LED D800 to D804 on the outdoor control P.C. board can be exchanged by
operation of SW803.

Switch Function / Contents Refer

Trouble display (Trouble generating at present) Refer to
SW803
Trouble generating at present is displayed. 2)
ON
This switch goes off when a trouble does not generate.
1 2 3 4

Trouble display (The latest trouble: Latest trouble including present) Refer to
After trouble status was cleared, the trouble which generated 2)
SW803 before can be confirmed by this setting. (Reconfirmation is
ON available even if power supply was turned off once.)
• If a trouble generates at present, the same contents as those
1 2 3 4 of trouble which is generating at present are displayed.
• Only trouble of TO sensor is not displayed by this setting.
(Confirm it by setting of trouble which is generating at present.)

Temperature sensor display Refer to

The detected value of temperature sensor is displayed. 3)
TD TE TS
SW803 SW803 SW803
ON ON ON

1 2 3 4 1 2 3 4 1 2 3 4

TO TL TH
SW803 SW803 SW803
ON ON ON

1 2 3 4 1 2 3 4 1 2 3 4

TA TC TCJ
SW803 SW803 SW803
ON ON ON

1 2 3 4 1 2 3 4 1 2 3 4

Current display Refer to

SW803
The current value which flows in the outdoor unit is displayed. 3)
ON

1 2 3 4

Compressor operation frequency display Refer to

SW803
The operation frequency of the compressor is displayed. 3)
ON

1 2 3 4

PMV opening display Refer to

SW803
The opening of PMV (Pulse Motor Valve) is displayed. 3)
ON

1 2 3 4

Ps sensor display Refer to

SW803
Detected Ps sensor is displayed. 3)
ON

1 2 3 4

– 74 –
2) Trouble display
The trouble which is generating at present and the latest trouble (Latest trouble information including
present) can be confirmed by lighting LED D800 to D804 on the outdoor control P.C. board.
a) When all DIP switch SW803 are OFF, the status of trouble which is generating at present is displayed.
b) <1> only of DIP switch SW803 is turned on, the trouble which generated before
(Latest trouble information including present) is displayed.)
c) If there is a trouble, any of LED D800 to D804 goes on. (Display 1)
d) When pushing the pushdown button switch SW800 for approx. 1 second, the display is exchanged.
(Display 2)
e) When pushing SW800 again or after 2 minutes, the status returns to that of Display c.

(Legend)
Present trouble Latest trouble
SW803 SW803
ON ON D800 D801 D802 D803 D804 D805
(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)
1 2 3 4 1 2 3 4

: Go off, : Go on, : Flash

Display 1) Display 2) Trouble contents Wired remote controller

(Initial display) (SW800 operation) Check code
Normal —
Discharge temp. sensor (TD) trouble F04
Heat exchanger temp. sensor (TE) trouble F06
Heat exchanger temp. sensor (TL) trouble F06, F07
Outside temp. sensor (TO) trouble F08
Suction temp. sensor (TS) trouble F06, F12
Heat sink temp. sensor (TH) trouble F13, L29
Heat exchanger sensor (TE, TS) miss-wiring F06, F15
EEPROM trouble F31, L29
Compressor break down H01
Compressor lock H02
Current detection circuit trouble H03
Case thermostat operation H04, P04
Model unset L10, L29
Communication trouble between MCU L29
Other trouble (Compressor disorder, etc.) Trouble is not determined.
Discharge temp. trouble P03
High pressure SW system trouble P04
Power supply trouble P04, P05
Heat sink overheat trouble P07, L29
Gas leak detection P15, L29
4-way valve reverse trouble P19, L29
High pressure protective operation P04, P20
Fan system trouble P22
Driving element short-circuit P26
Position detection circuit trouble P29

∗ As the Check code displayed on the wired remote controller may differ according to type of indoor model,
multiple codes are described.

– 75 –
3) Sensor, current, compressor operation frequency, PMV opening display
The values detected by the controller, such as temperature sensor or current value are simply confirmed.

(Legend)

D800 D801 D802 D803 D804 D805

(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green) : Go off, : Go on

Temperature sensor (°C)

TD TE TS Compressor PMV
Item SW803 SW803 SW803 Current operation opening
ON ON ON
setup (A) frequency (Pulse)
(rpm)
1 2 3 4 1 2 3 4 1 2 3 4
TO TL TH SW803 SW803 SW803
SW803 SW803 SW803
ON ON ON ON ON ON

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4
TA TC TCJ
SW803 SW803 SW803
LED ON ON ON
display
1 2 3 4 1 2 3 4 1 2 3 4

Below –25 0 to 0.9 0 to 4 0 to 19

–25 to –21 1 to 1.9 5 to 9 20 to 39
–20 to –16 2 to 2.9 10 to 14 40 to 59
–15 to –11 3 to 3.9 15 to 19 60 to 79
–10 to – 5 4 to 4.9 20 to 24 80 to 99
–5 to –1 5 to 5.9 25 to 29 100 to 119
0 to 4 6 to 6.9 30 to 34 120 to 139
5 to 9 7 to 7.9 35 to 39 140 to 159
10 to 14 8 to 8.9 40 to 44 160 to 179
15 to 19 9 to 9.9 45 to 49 180 to 199
20 to 24 10 to 10.9 50 to 54 200 to 219
25 to 29 11 to 11.9 55 to 59 220 to 239
30 to 34 12 to 12.9 60 to 64 240 to 259
35 to 39 13 to 13.9 65 to 69 260 to 279
40 to 44 14 to 14.9 70 to 74 280 to 299
45 to 49 15 to 15.9 75 to 79 300 to 319
50 to 54 16 to 16.9 80 to 84 320 to 339
55 to 59 17 to 17.9 85 to 89 340 to 359
60 to 64 18 to 18.9 80 to 84 360 to 379
65 to 69 19 to 19.9 95 to 99 380 to 399
70 to 74 20 to 20.9 100 to 104 400 to 419
75 to 79 21 to 21.9 105 to 109 420 to 439
80 to 84 22 to 22.9 110 to 114 440 to 459
85 to 89 23 to 23.9 115 to 119 460 to 479
90 to 94 24 to 24.9 120 to 124 480 to 499
95 to 99 25 to 25.9 125 to 129 500
100 to 104 26 to 26.9 130 to 134 —
105 to 109 27 to 27.9 135 to 139 —
110 to 114 28 to 28.9 140 to 144 —
115 to 119 29 to 29.9 145 to 149 —
Over 120 30 to 30.9 150 to 154 —
Sensor trouble, unconnected Over 31 Over 155 —
∗ As TD, TL and TH are sensors for high temperature, there is trouble at normal temperature or below position.
∗ For current value, the current for the outdoor unit only is displayed.

– 76 –
4) Specific operation for maintenance check (SW801, SW804)
The following specific operations for the maintenance check are performed by operation of SW801 or
SW804.
a) Select DIP switch SW804. (See table below)
b) Push the pushdown button switch SW801 for approx. 1 second.
c) The following functions start. While each function starts, LED D805 (Green) flashes.
d) When pushing the pushdown button switch SW801 again for approx. 1 second, when selecting DIP switch
SW804 or when the specified time of each function elapsed, each function stops and LED D805 (Green)
returns to the continuous lighting.

<Specific operation>

SW804 Operation when pushdown button switch SW801 is pushed

Refrigerant recovery operation

SW804
ON
The outdoor unit performs cooling operation.
The indoor unit does not work by this operation alone.
1 2 3 4 Therefore operate the fan beforehand.

Indoor cooling test run demand

SW804
ON The cooling test run is performed. (→ Note 1)

1 2 3 4

Indoor heating test run demand

SW804
ON The heating test run is performed. (→ Note 1)

1 2 3 4

Fan motor forced operation

SW804
ON Drive the fan motor forcedly.
When pushing SW801 again or when 2 minutes elapsed,
1 2 3 4 the operation returns to the normal control.

PMV full open operation

SW804 [NOTE]
ON Open PMV (Pulse Motor Valve) fully.
Although these operations can
When pushing SW801 again or when 2 minutes elapsed,
be performed even during
1 2 3 4 the operation returns to the normal control.
operation, basically perform
operation while the unit stops.
PMV full close operation If performing this operation
SW804
ON Close PMV (Pulse Motor Valve) fully. during driving the unit, it is
When pushing SW801 again or when 2 minutes elapsed, dangerous because the
1 2 3 4 the operation returns to the normal control. pressure may change suddenly.

PMV middle opening operation

SW804
ON Set PMV (Pulse Motor Valve) to middle opening.
When pushing SW801 again or when 2 minutes elapsed,
1 2 3 4 the operation returns to the normal control.

Note 1) Indoor cooling test run demand / Indoor heating test run demand
Only when combining with the following indoor unit, cooling/heating operation can be performed from
the outdoor unit.
Test run is unavailable: Indoor units other than the above-mentioned indoor units, are included in the
twin, triple connection.
Note 2) The forced test run by this setting cannot be cleared on the indoor remote controller.
Be sure to clear the test run by operation of the outdoor unit. (Push SW801 again for 1 second.)

– 77 –
 SW804 Operation when pushdown button switch SW801 is pushed

4-way valve relay operation (For RY700, CN70 check)

SW804
ON
Turn on 4-way valve power relay (RY700).
When pushing SW801 again or when 2 minutes elapsed,
1 2 3 4 the operation returns to the normal control.
[CAUTION]
Although these operations can
Heater output relay operation
SW804 be performed even during
(For check RY703, CN703 check)
ON operation, basically perform
Turn on relay for option heater (RY703). operation while the unit stops.
1 2 3 4 When pushing SW801 again or when 2 minutes If performing this operation
elapsed, the operation returns to the normal control. during driving the unit, it is
dangerous because the
Outside output relay operation (RY704, CN704) pressure may change suddenly.
SW804
ON
Turn on relay for outside output (RY704).
When pushing SW801 again or when 2 minutes
1 2 3 4 elapsed, the operation returns to the normal control.

Forced start command

SW804
ON
The indoor unit connected to the system is forcedly started.
(The indoor unit starts operation by setting of the operation mode on the remote controller.)
1 2 3 4

Forced stop command

SW804
ON
The indoor unit connected to the system is forcedly stopped.

1 2 3 4

Relay operation change for outside output

SW804
ON
[CAUTION]
1 2 3 4 Do not use this setting.

9-3-4. Outdoor application operation

Optional connector kit (TCB-KBOS4E)
(1) Peak-cut control
• Saves the power of the outdoor unit by the external peak-cut signal to suppress temporary peak power
dissipation.
• The power saving can be switched to three levels: 75%, 50%, and operation stop.
(2) Night operation
• Reduces the capacity of the air conditioner by the input signal from a commercially available timer
(procured locally) regardless of the outside air temperature or load to reduce operating noise.
(3) Compressor output
• Turns on the no-voltage contact output while the compressor is operating.

– 78 –
 10. ADDRESS SETUP
10-1. Address Setup Procedure
When an outdoor unit and an indoor unit are connected, or when an outdoor unit is connected to each indoor
unit respectively in the group operation even if multiple refrigerant lines are provided, the automatic address
setup completes with power-ON of the outdoor unit. The operation of the remote controller is not accepted
while automatic address works. (Approx. 4 to 5 minutes)

Setup of line address of outdoor unit,

indoor unit address, and group address

Completion of wiring work

Do you arbitrarily set the NO

indoor unit address?
YES (MANUAL) NO
Is refrigerant line 1 line?

YES
NO
Is group control performed?

YES (To AUTO address mode)

Do you change setting after

automatic setting at the first time?
YES
Connect one remote controller with
one indoor unit (1 : 1) tentatively with
communication wires.

Turn on power of outdoor unit. Turn on power of outdoor unit. Turn on power of outdoor unit.

After completion of address

( setup, change it to arbitrary ) Setup of automatic
Set to all indoor units one by one. address/group manually.
( address finishes within
4 to 5 minutes.
)
END

• When the following addresses are not stored in the neutral memory (IC503) on the indoor P.C. board, a test
run operation cannot be performed. (Unfixed data at shipment from factory)

Item code Data at shipment Setup data range

Line address 12 0099 0001 (No. 1 unit) to 0064 (No. 64 unit)

0001 (No. 1 unit) to 0064 (No. 64 unit)

Indoor unit address 13 0099
Max. value of indoor units in the identical refrigerant line

0000 : Individual (Indoor units which are not controlled in a group)

Group address 14 0099 0001 : Master unit (1 indoor unit in group control)
0002 : Sub unit (Indoor units other than master unit in group control)

– 79 –
10-2. Address Setup & Group Control
<Definitions of terms>
Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64)
Group address : 0 = Single (Not group control)
1 = Master unit in group control
2 = Sub unit in group control
Master unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/
from the remote controllers and sub indoor units.
(* It has no relation with an indoor unit which communicates serially with the outdoor units.)
The operation mode and setup temperature range are displayed on the remote controller
LCD.
(Except air direction adjustment of louver)
Sub unit (= 2) : Indoor units other than master unit in group operation
Basically, sub units do not send/receive signals to/from the remote controllers.
(Except alarm and response to demand of service data)
Header unit (Representative unit) (Master Twin)
: This unit communicates with the indoor unit (follower) which serial-communicates with the
outdoor units and sends/receives signal (Command from compressor) to/from the outdoor
units as the representative of the cycle control in the indoor units of the identical line
address within the minimum unit which configures one of the refrigerating cycles of Twin.
Follower unit (Subordinate unit) (Sub Twin)
: Indoor units excluding the header unit in Twin
This unit communicates with (Header) indoor unit in the identical line address and performs
control synchronized with (Header) indoor unit.
This unit does not perform the signal send/receive operation with the outdoor units. :
No judgment for serial signal trouble.

– 80 –
10-2-1. System Configuration
1. Single

Outdoor

1-1
Indoor (Master/Header)
Individual

Remote
controller

2. Twin 3. Triple

1-1 1-2 1-1 1-2 1-3

Master/Header Sub/Follower Master/Header Sub/Follower Sub/Follower

4. Single group operation

2-1 1-1 3-1 4-1 8-1

Sub/Header Sub/Header Sub/Header Master/Header Sub/Header

(Max. : 8 units)

• Each indoor unit controls the outdoor unit individually.

5. Multiple groups operation (Single, Twin, Triple operation) (Manually addresses change)

2-1 1-1 1-2 3-1 3-2 3-3

Sub/Header Sub/Header Sub/Follower Master/Header Sub/Follower Sub/Follower

• Header unit: The header unit receives the indoor unit data (thermostat status) of the follower (Without
identical line address & indoor/outdoor serial) and then finally controls the outdoor compressor
matching with its own thermostat status.
The header unit sends this command information to the follower unit.
• Follower unit: The follower unit receives the indoor unit data from the header (With identical line address &
indoor/outdoor serial) and then performs the thermostat operation synchronized with the
header unit.
The follower unit sends own thermostat ON/OFF demand to the header unit.
(Example)
No. 3-1 header unit sends/receives signal to/from No. 3-2 and No. 3-3 follower units.
(It is not influenced by the refrigerating line 1 or 2 address indoor unit.)

– 81 –
10-2-2. Automatic Address Example from Unset Address (No miss-wiring)

1. Standard (One outdoor unit)

1. Single 2. Twin 3. Triple

1-1 1-1 1-2 1-1 1-2 1-3

Individual Master/Header Sub/Follower Master/Header Sub/Follower Sub/Follower

Only turning on source power supply (Automatic completion)

2. Single group operation (Multiple outdoor units = Multiple indoor units only with serial communication)

2-1 1-1 3-1 4-1 8-1

Sub/Header Sub/Header Sub/Header Master/Header Sub/Header

Only turning on source power supply (Automatic completion)

3. Multiple groups operation (Single, Triple, twin operation)

2-1 1-1 2-1 3-3 3-1 2-2

Sub/Header Sub/Header Sub/Follower Master/Follower Sub/Header Sub/Follower

Change is necessary
Manually change addresses of the multiple follower units
simultaneously from the remote controller.

2-1 1-1 1-2 1-3 3-1 3-2

Sub/Header Sub/Header Sub/Follower Master/Follower Sub/Header Sub/Follower

– 82 –
10-3. Remote Controller Wiring
• Strip off approx. 9 mm the wire to be connected.
• For single system, use non polarity, 2 core wire
is used for wiring of the remote controller. Wiring diagram
(0.5 mm² to 2.0 mm² wires)
• For the synchronous twin, triple system, use 2-
core shield wire (Vinyl cord for microphone 0.5 Terminal block for remote controller Terminal block
wiring of indoor unit
to 2.0 mm²) to conform to the EMC standard.
A A Remote controller
B B unit

Remote controller wire

(Procured locally)

∗ For details of wiring/installation of the remote

controller, refer to the Installation Manual enclosed
with the remote controller.

Single system Simultaneous twin system

Remote controller
Remote controller Remote controller inter-unit wiring

Remote controller wiring Remote controller

wiring
A B A B A B
Indoor side Indoor side Indoor side
1 2 3 1 2 3 1 2 3

Indoor/Outdoor Indoor/Outdoor
connecting wires connecting wires
1 2 3
Indoor power
1 2 3
inter-unit wiring
Outdoor side Outdoor side
L1 L2 L3 N L1 L2 L3 N

380-415 V 3N~, 50Hz 380-415 V 3N~, 50Hz

380 V 3N~, 60Hz 380 V 3N~, 60Hz

Simultaneous triple system (GP160 only)

Remote controller Remote controller

Remote controller inter-unit wiring inter-unit wiring

Remote controller
wiring A B A B A B
Indoor side Indoor side Indoor side
1 2 3 1 2 3 1 2 3
Indoor/Outdoor
connecting wires
1 2 3 Indoor power Indoor power
Outdoor side inter-unit wiring inter-unit wiring

L1 L2 L3 N

380-415 V 3N~, 50Hz

380 V 3N~, 60Hz

Triple

– 83 –
10-4. Address Setup (Manual setting from remote controller)
(Example of 2-lines cabling)
In case that addresses of the indoor units will be (Solid line: Cabling, Broken line: Refrigerant pipe)
determined prior to piping work after wiring work
Outdoor Outdoor
• Set an indoor unit per a remote controller. 1 2 3 1 2 3
• Turn on power supply.

1 2 3 1 2 3 1 2 3 1 2 3
Indoor Indoor Indoor Indoor
A B A B A B A B

Line address → 1 1 2 2
Indoor unit address → 1 2 1 2

1 Group address → 1 2 2 2
Push + + buttons simultaneously for
4 seconds or more. A B

2 (←
← Line address)
Remote controller

Using the temperature setup / For the above example, perform setting by
connecting singly the wired remote controller
buttons, set the CODE No. to 12. without remote controller inter-unit cable.

3
Group address
Using timer time / buttons, set the line Individual : 0000
Master unit : 0001
address. Sub unit : 0002
In case of group control

4 Push button. (OK when display goes on.)

5 (←
← Indoor unit address)
Using the temperature setup / buttons, set the CODE No. to 13.

6 Using timer time / buttons, set the line address to 1.

7 Push button. (OK when display goes on.)

8 (←
← Group address)
Using the temperature setup / buttons, set the CODE No. to 14.

9 Using timer time / buttons, set Individual to 0000, Header unit to 0001, and Follower
unit to 0002.

10 Push button. (OK when display goes on.)

11 Push button.
Setup completes. (The status returns to the usual stop status.)

TEMP. ON / OFF

2, 5, 8 TIMER SET FAN MODE 3, 6, 9

END 11
TIME SAVE
A VENT

FILTER
L
RESET TEST SET CL SWING/FIX UNIT
T LOUVER 4, 7, 10

1
<Operation procedure>

1 2 3 4 5 6 7 8 9 10 11 END
– 84 –
10-5. Confirmation of Indoor Unit No. Position
1. To know the indoor unit addresses though position of the indoor unit body is recognized
• In case of individual operation (Wired remote controller : indoor unit = 1 : 1)
(Follow to the procedure during operation)

<Procedure>

1 Push button if the unit stops.

2 Push
UNIT LOUVER
button (button of left side).
Unit No. 1-1 is displayed on LCD. TEMP. ON / OFF

(It disappears after several seconds.) 1

The displayed unit No. indicate line address and indoor TIMER SET FAN MODE
Operation
unit address. TIME SAVE
A VENT

(When other indoor units are connected to the identical FILTER

L
RESET TEST SET CL SWING/FIX UNIT
T LOUVER

remote controller (Group control unit), other unit

numbers are also displayed every pushing button
UNIT LOUVER

(button of left side).

2
<Operation procedure>

1 2 END

2. To know the position of indoor unit body by address

• To confirm the unit No. in the group control
(Follow to the procedure during operation) (in this procedure, the indoor units in group control stop.)
<Procedure>
The indoor unit numbers in the group control are
successively displayed, and fan, louver, and drain pump
of the corresponding indoor unit are turned on.
(Follow to the procedure during operation)

1 Push and buttons simultaneously for TEMP. ON / OFF

4 seconds or more.
TIMER SET FAN MODE

• Unit No. ALL is displayed.

• Fans and louvers of all the indoor units in the
1 FILTER
L
TIME SAVE
A VENT

RESET TEST SET CL SWING/FIX UNIT

T LOUVER

group control operate.

2 Every pushing button (button of left

UNIT LOUVER

side), the unit numbers in the group control 3 2

are successively displayed.
• The unit No. displayed at the first time indicates the <Operation procedure>
master unit address.
• Fan and louver of the selected indoor unit only
1 2
END 3
operate.

3 Push button to finish the procedure.

All the indoor units in the group control
stop.

– 85 –
<Maintenance/Check list>
Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units
of the operating air conditioning system regularly to secure effective operation of the air conditioner.
It is also recommended to maintain the units once a year regularly when operating the air conditioner for a
long time.
Check periodically signs of rust or scratches, etc. on coating of the outdoor units.
Repair the trouble position or apply the rust resisting paint if necessary.
If an indoor unit operates for approx. 8 hours or more per day, usually it is necessary to clean the indoor/
outdoor units once three months at least.
These cleaning and maintenance should be carried out by a qualified dealer.
Although the customer has to pay the charge for the maintenance, the life of the unit can be prolonged.
Failure to clean the indoor/outdoor units regularly will cause shortage of capacity, freezing, water leakage or
trouble on the compressor.

Object
Part name Contents of check Contents of maintenance
Indoor Outdoor

Heat exchanger   • Blocking with dust, damage check • Clean it when blocking is found.

Fan motor   • Audibility for sound • When abnormal sound is heard

• Clean with water if dirty

Filter  — • Visual check for dirt and breakage
• Replace if any breakage

• Visual check for swing and balance • Replace fan when swinging or
• Check adhesion of dust and external balance is remarkably poor.
Fan  
appearance. • If a large dust adheres, clean it with
brush or water.

Suction/ • Repair or replace it if deformation or

Discharge grille  — • Visual check for dirt and scratch damage is found.

• Check blocking by dust and dirt of drain

Drain pan  —
water. • Clean drain pan, Inclination check

Front panel, Louver  — • Check dirt and scratch. • Cleaning/Coating with repair painting

• Check rust and pealing of insulator

External appearance —  • Coating with repair painting
• Check peeling and floating of coating film

– 86 –
11. REPLACEMENT OF THE SERVICE P.C. BOARD MCC-1599
1. Setting the jumper wires and DIP switches

Part name Function Setting

J800 to J803 Model switching Cut these jumper wires according to the following table.
Jumper wire Set these jumper wires to the settings of the P.C. board
J804 to J811 Settings
before replacement

Set SW802 to the setting of the P.C. board

SW802 Settings
before replacement

SW803 LED indication switching Set SW803 to all OFF.

DIP switch
SW804 Special operations for service Set SW804 to all OFF

SW805 Special operations for service Set SW805 to all OFF

Model switching (J800 to J803)

Since this service P.C. board is available for several models, cut the jumper wires according to the following table.
If they are not cut correctly, a check code “L10” or “L29” appears on the wired remote controller and the
operation of the air conditioner is disabled.

Model name J 800 J 801 J 802 J 803

Factory setting (default) O O O O

RAV-GP1101AT8* × O × ×
RAV-GP1401AT8* O × × ×
RAV-GP1601AT8* × × × ×
[ : Characters that indicate the following
O : Connected,
No. character : Standard models
J : For heavily salt-affected areas
× : Cut

MCC-1599
SW804 SW805

SW802 SW803
J807 to J811 J804 to J806

J800 to J803

– 87 –
 12. HOW TO EXCHANGE COMPRESSOR
12-1. Exchanging Procedure of Compressor (Outline)

START

NO Open PMV forcedly and then recover refrigerant

Has refrigerant recovery work been done?
using a refrigerant recovery unit.
YES
Turn off the leakage breaker.
Never recover the refrigerant to the outdoor unit.
• For the refrigerant recovery work during reinstallation
Remove the trouble compressor.
of repair work, be sure to use the refrigerant recovery unit.
• Recovery of refrigerant to the outdoor unit is unavailable;
Mount a service compressor. otherwise a serious accident such as explosion or
injury may be caused.

Leakage check

Vacuuming

Charge the refrigerant.

END

12-2. Exchange of Compressor

For exchange of compressors, refer to (10) Compressor in Section 13. Detachments.

– 88 –
 13. DETACHMENTS
13-1. Outdoor Unit
RAV-GP1101AT8*, RAV-GP1401AT8*, RAV-GP1601AT8* series

No. Part name Procedure Remarks

1 Common
procedure WARNING
Stop operation of the air conditioner and turn off
breaker switch.

CAUTION
Ensure wearing of gloves when performing any work
in order to avoid injury from parts, etc.

1. Detachment
1) Remove the service panel.
(Hexagonal screws M4 × 10, 2 pcs.) Service panel
• Remove the screws and then pull service panel
downward to remove.
2) Remove the power supply cable and the indoor/
outdoor connecting wire from the cord clamp and
the terminal.
3) Remove the top plate.
(Hexagonal screws M4 × 10, 5 pcs.)

2. Attachment Top plate

1) Attach the top plate.
(Hexagonal screws M4 × 10, 5 pcs.)
2) Connect the power supply cable and the indoor/
outdoor connecting wire to the terminal and then
fix with the cord clamp.

CAUTION
The power supply cable and the indoor/outdoor
connecting wire must be affixed along the crossover
pipe using a commercially available bundling band so
that they do not make contact with the compressor,
gas valve, gas pipe and discharge pipe.

3) Attach the front panel.

(Hexagonal screws M4 ×10, 2 pcs.)

– 89 –
No. Part name Procedure Remarks

2 Discharge 1. Detachment
port cabinet Heat exchanger Motor base
1) Carry out the operation in 1. of above.
2) Remove the screws fixing the inverter assembly,
the discharge port cabinet and the partition board.
(ST1T M4 × 8, 4 pcs.)
3) Remove the screws for the discharge port cabinet
and the bottom plate.
(Hexagonal screw M4 × 10, 2 pcs.)
4) Remove screw for the discharge port cabinet and
heat exchanger. (ST1T M4 × 8, 1 pc.)
5) Remove screw for the discharge port cabinet and
the motor base. (ST1T M4 × 8, 2 pcs.)
6) Remove screws for the discharge port cabinet
and the fin guard.
(Hexagonal screw M4 × 10, 2 pcs.)

2. Attachment
1) Attach the discharge port cabinet and end board
of heat exchanger and fix with a screw.
(ST1T M4 × 8, 1 pc.) Discharge
port cabinet
2) Mount other removed screws into original
positions.

Fin guard Bottom plate

– 90 –
No. Part name Procedure Remarks

3 Side cabinet 1. Detachment

Discharge port cabinet Side cabinet
1) Carry out the operation in 1. of above.
Inverter assembly
2) Remove the screws fixing the inverter assembly
and the side cabinet. (ST1T M4 × 10, 3 pcs.)
3) Remove the screws for the side cabinet and the
valve fixing plate. (ST1T M4 × 10, 2 pcs.)
4) Remove screw for the side cabinet and piping
panel (rear). (Hexagonal screw M4 × 10, 2 pcs.)
5) Remove screw for the side cabinet and the
bottom plate. (Hexagonal screw M4 × 10, 1 pc.)
6) Remove screws for the side cabinet, heat
exchanger and the fin guard.
(Hexagonal screw M4 × 10, 5 pcs.)

2. Attachment
1) Temporarily suspend the side cabinet on the
inverter assembly using the hook.
2) Mount the removed screws in the opposite
procedure to that during detachment.

Valve fixing plate

Hook

Inverter assembly

Valve fixing plate

– 91 –
No. Part name Procedure Remarks

4 Inverter 1. Detachment
assembly 1) Carry out the operation in 1. of , 1. of above.
2) Remove the connectors connected to the Fan IPDU
board, the connector connected to other components
from the control board Cut the
(Interface board). banding band
CN600 : TS sensor (3P: White, tube: Gray)
CN601 : TE sensor (2P: White, tube: Blue) Fan-IPDU board
CN602 : TO sensor (2P: Yellow, tube: Black) Remove the fan motor lead wire
CN603 : TD sensor (3P: White, tube: Red) from the cord clamp.
CN604 : TL sensor (2P: White, tube: White)
CN609 : Case thermostat. (2P: Blue)
CN690 : High pressure switch (3P: Green)
Discharge port
CN700 : 4-way coil (3P: Yellow) cabinet Interface board
CN710 : PMV coil (6P: White)
Cut the
• Fan IPDU board banding band
CN700 : Outdoors lower fan motor (3P: Blue)
CN750 : Outdoors upper fan motor (3P: White)
Cut the banding band and remove connector connected Remove the fan motor lead wire
from fan motor to fan motor relay board. from the cord clamp.
∗ Remove connectors after unlocking housing section
3) Remove the screw (1 position) fixing the discharge port
cabinet.
4) Cut bundling band fixing various lead lines to inverter
assembly.
5) Remove sound-insulation plate (upper).
6) Remove terminal cover of compressor and remove
compressor lead. Sound-insulation plate
7) Pull up the inverter assembly at upper side to remove (upper)
hook of partition plate (rear left part).
2. Attachment
1) Mount the inverter assembly on the partition plate.

CAUTION
When mounting the inverter assembly on the partitioning
plate, ensure proper mounting of the hook (rear left part)
Sound-insulation plate
with partitioning plate. (rolling out)

2) Mount the individual components in the opposite

procedure to that during detachment.

Inverter
assembly

Partition plate

Compressor lead
Case thermostat Hook

Inverter
assembly

– 92 –
No. Part name Procedure Remarks

5 Interface board 1. Detachment

(Control board) 1) Carry out the operation in 1. of , and
MCC-1599 1. of above.
2) Remove lead wires and connectors to other
components from the interface board
(control board).
CN01 : Indoor/Outdoor connection terminal
(5P: White)
CN02 : Power relay (3P: Red)
CN600 : TS sensor (3P: White, tube: Gray)
CN601 : TE sensor (2P: Green, tube: Blue)
CN602 : TO sensor (2P: Yellow, tube: Black)
CN603 : TD sensor (3P: White, tube: Red)
CN604 : TL sensor (2P: White, tube: White)
CN608 : Connection with noise filter board
(2P: White)
CN609: Case thermostat. (2P :Blue)
CN690 : High pressure switch (3P: Green)
CN700 : 4-way coil (3P: Yellow)
CN708 : Magnet switch (3P: Blue)
Interface board
CN710 : PMV coil (6P: White) (Control board)
CN802 : Connection with Fan IPDU board
(5P: white)

∗ Remove connectors after unlocking housing

section

3) Remove the claws of the supports

(4 positions) fixing the board and remove the
interface board (Control board).

2. Attachment
1) Mount the interface board (Control board).
2) Mount the individual components in the Support (4 positions)
opposite procedure to that during detachment.

Statue of control board when removed

– 93 –
No. Part name Procedure Remarks

6 Fan-IPDU board 1. Detachment FAN-IPDU board

MCC-1597 1) Carry out the operation in 1. of , and
1. of above.
2) Remove lead wires and connectors to other
components from the Fan-IPDU board.
CN500 : Connection between reactor and
noise filter board (7P, Red)
CN502 : Compressor IPDU board (3P, White)
CN504 : Interface board (5P, Blue)
CN505 : Compressor IPDU board (5P, Red)
CN602 : Noise filter board (2P, Black)
CN700 : Outdoors lower fan motor (3P, Blue)
CN750 : Outdoors upper fan motor (3P, White)

∗ Connectors should be removed after

unlocking the housing section.

3) Remove screw fixing the earth wire.

4) Remove the claw of the support (4 positions)
fixing the board and the screw (5 positions)
fixing the heat sink and then remove the Fan-
Screw
IPDU board.
Earth wire
2. Attachment
Support
1) Mount Fan-IPDU board (2 positions)
2) Mount components in the opposite method to
that when removing.

Screw

Support
(2 positions) Heat sink

State of Fan-IPDU board when removed

– 94 –
No. Part name Procedure Remarks

7 Noise filter 1. Detachment

Fan-IPDU board
board 1) Perform the operation in 1. of ,1. of ,
MCC-1600 1.-2 of and 1.-2 of .
2) Remove the screws (3 positions) fixing the inverter assem-
bly (front). Then slide the inverter assembly (front) upwardly
and remove.
3) Remove the lead wires connector to other components from
the noise filter board.

CN05: Power supply terminal block (red)

CN06: Power supply terminal block (White)
CN07: Power supply terminal block (Black)
CN08: Power supply terminal block (Gray)
CN09: Connection to earth (Brown)
CN10: Posistor (Red)
CN16: Relay (Red)
CN17: Compressor IPDU board (White)
CN18: Relay (Black) Interface board
CN19: Relay (Gray)
CN20: Power supply terminal block (White)
CN23: Fan-IPDU board (5P, Red)
CN50: Interface board (2P, White)
CN51: Fan-IPDU board (2P, Back)

∗ Connectors should be removed after unlocking the

housing section.

4) Remove the claw of the support (2 positions) and the screw

(2 positions) fixing the base and then remove the noise filter
base.

2. Attachment
1) Mount noise filter board.
2) Mount components in the opposite method to that when
removing.
Inverter assembly (front)

Screws
(2 positions)

Noise filter board

Using

State of noise
Using the hook, filter board
it is possible to temporarily suspend when removed
the inverter assembly (front).

– 95 –
No. Part name Procedure Remarks

8 Compressor 1. Detachment
IPDU board 1) Carry out the operation in 1. of , 1. of ,
MCC-1596 1. of , 1. of and 1. of .
2) Remove the screw (4 positions) fixing the inverter
assembly (IPDU).
3) Remove the lead wire and connector to other
components from the compressor IPDU board.
CN04 : Posistor (Red)
CN09 : Power supply terminal block (Yellow)
CN10 : Power supply terminal block (Yellow)
CN11 : Relay (Red)
CN12 : Noise filter board (White)
CN13 : Relay (Black)
CN101 : FAN-IPDU board (3P, White)
CN211 : Compressor (Red)
CN212 : Compressor (White)
CN213 : Compressor (Black)
CN851 : FAN-IPDU board (5P, Red)

∗ Connectors should be removed after unlocking

the housing section.

4) Slide and remove the inverter assembly (IPDU).

5) Remove the screws (4 positions) fixing the heat
sink and the screws (3 positions) fixing the
compressor IPDU board and then remove the
compressor IPDU board.

2. Attachment
Inverter assembly (front)
1) Mount compressor IPDU board.
2) Mount components in the opposite method to that Screws (4 positions)
when removing.

Compressor
IPDU board

Screws (3 positions)

State of compressor IPDU board

when removed

– 96 –
No Part name Procedure Part name

9 Fan motor 1) Carry out works of item 1 of and work of .

2) Remove the flange nut fixing the fan motor and the propeller Propeller fan
fan.
• The flange nut is loosened by turning it clockwise.
(When tightening it, turn it counterclockwise.) Loosened by
turning clockwise
3) Remove the propeller fan.
4) Remove the connector for the fan motor from the inverter.
(Remove the ferrite core of the lower fan motor because it is
used.)
5) Remove the fan motor lead from the fan motor lead fixed
rubber of the penetrated part of the partition board.
6) Remove the fixing screws (4 pieces each) while supporting Flange nut
the fan motor so that it does not fall down.
∗ Cautions for assembling of fan motor
• Tighten the flange nut with 4.95N•m (50kgf•cm).
• Adjust length of the fan motor lead wire at the fan motor Propeller fan
lead fixed rubber so that the fan motor lead is not slack-
ened; otherwise the fan motor lead may come to contact
with the propeller fan. Fan motor
Attach the fan motor lead fixed rubber to the partition
board so that the projection is set at the refrigerating
cycle side.
• Be sure so that the reactor body does not contact with the
fan motor lead.
• Be sure to bundle the removed bundling band with the
bundling band on the market.
• Necessarily attach the ferrite core of the lower fan motor
again. (Fix it with bundling band on the market.) Connector of
upper fan motor
Projection/Refrigerating
REQUIREMENT cycle side

Be sure to fix the fan motor lead to the motor base using the
metal band of the motor base so that the fan motor lead
does not come to contact with the propeller fan.

Fan motor lead

fixed rubber
Ferrite core

Ferrite core

Connector of
lower fan motor
Fan motor

Fan motor lead

fixed rubber

Projection/Refrigerating
cycle side

– 97 –
No. Part name Procedure Remarks

10 Compressor 1. Removal of trouble compressor

Compressor 1) Recover the refrigerant gas. Piping panel (Front)
lead 2) Carry out work of item 1 of , 1 of and 1 of .
3) Remove the piping panel (Front).
Remove the piping panel (Front) and screws of the
bottom plate. (Hexagonal screw M4 × 10, 2 pcs.)
Remove screw of the piping panel (Front) and the
piping panel (Rear). (Hexagonal screw M4 × 10, 1 pc.) Piping panel (Rear)

4) Remove the piping panel (Rear).

Pipe cover
Remove the piping panel (Rear) and screws of the
bottom plate. (Hexagonal screw M4 × 10, 2 pcs.)
Bundling band
5) Remove the sound-insulation plate. (For thermal proof)
(Upper, rolling in, rolling out)
6) Remove the terminal cover of the compressor and
TD sensor
then remove the compressor lead and the compressor
case thermostat.
7) Remove TD sensor which is fixed to the discharge
pipe.
8) Remove the compressor lead.
Control P.C. board U : CN211 Red
V : CN212 White
W : CN213 Black
9) Remove ferrite core from compressor lead. Compressor lead
10) Using a burner, remove the discharge pipe and the
suction pipe which are connected to the
compressor.

WARNING
In case of removing the piping by broiling the welded
part with a burner, if there is oil in the pipe, it may burst
into flames at the moment that wax melted, so take
sufficient care.

Ferrite core
CAUTION
Note so that the flame does not catch the
4-way valve and PMV. (A malfunction may be caused.)
Remove
(Discharge pipe)
11) Pull off the discharge pipe and the suction pipe of
the refrigerating cycle upward.
12) Remove the compressor nuts which fix the
compressor to the bottom plate. (3 pcs.) Remove
13) Pull out the compressor toward you. (Suction pipe)

CAUTION
As weight of the compressor is 20kg or more, handle it
by 2 workers. Compressor nuts
(3 pcs.)
450

– 98 –
No. Part name Procedure Remarks

10 Compressor 2. Mounting of compressor

Compressor lead 1) Mount the compressor in the reverse Wrap the ferrite core with the compressor
lead wire for 1 time.
(Continued) procedure for removal.
Compressor lead

NOTE
• After replacement of the compressor, be sure
to replace the compressor lead. (Repair part
code of compressor lead: 43160612)
In this time, wrap the ferrite core with the
compressor lead wire by 1 time. Ferrite core

0t
• As shown in the right figure, mount the

o5
sound-insulation plate (rolling in, rolling out)

0
by passing through it between the
0 to 50
compressor and the piping, and between the (Compressor lead positioning standard)
piping and the partition board.
Put the end of Pass through sound-
• Fix TD sensor by the bundling band for heat- sound-insulation insulation plate
proof on the market via the pipe cover so that plate (rolling out) (rolling out) between
on the other end suction pipe and
TD sensor does not directly come to contact at this position. header pipe.
with the discharge pipe.

3. Vacuuming
1) Connect the vacuum pump to the charge Suction pipe Header pipe
port and the check joint of the gas pipe valve
and then drive the vacuum pump.
2) Carry out vacuuming until the vacuum low
pressure gauge indicates 1 (mmHg). Discharge pipe

NOTE Pass through sound-insulation plate

(rolling in) between compressor and
Before vacuuming, open PMV fully. discharge pipe, suction pipe and then put
the end of sound-insulation plate on the
If PMV is closed, vacuum may be impossible other end at this position.
between liquid pipe valve and PMV of the There should be no clearance between
outdoor unit. sound-insulation plate (upper) and sound-
insulation plate (rolling out).
Sound-insulation plate
(upper)
Forced full-opening method of PMV
• Turn on the leakage breaker.
• Turn on 1 and 3 of Dip switch SW804 on the
control P.C. board of the outdoor unit.
• Keep pushing SW801 on the control P.C. board of
the outdoor unit for 1 second or more.
• After pushing SW801 for 1 second or more, turn
Cultural rivet
off the leakage breaker within 2 minutes.

4. Refrigerant charge
1) Add the refrigerant amount determined by Sound-insulation plate
(rolling out)
the pipe length from the charge port of the Insert one side
valve. under cultural rivet.

SW804 SW801

– 99 –
No. Part name Procedure Remarks

11 PMV coil 1. Detachment

Concave part PMV main unit
1) Carry out work of item 1 of .
2) Turn the coil while pulling upward and then
remove the coil from the PMV main unit.

2. Attachment
1) Surely match the positioning projection of
the coil with the concave part of PMV main
unit and then fix it.

Positioning projection PMV coil

12 Fan guard 1. Detachment PT2P M3 14 and washer

1) Carry out works of item 1 of and 1 of . Discharge
Fan guard Bell mouth port cabinet

REQUIREMENT
To prevent scratch on the product, carry out
the work on cardboard, cloth, etc.

2) Remove the discharge port cabinet and then

put on it so that the fan guard side directs
downward.
3) Remove the screw for the bell mouth and
fan guard.
(PT2P M3 × 14 and washer, 4 pcs.)
Hooking claw
4) Remove the hooking claws (8 positions) of
the fan guard. Straight line of bell mouth

2. Attachment
1) Push the hooking claws (8 positions) with
hands from the front side to fix the claws.
2) Attach the bell mouth fixed with screws and
washers.
(PT2P M3 × 14 and washer, 4 pcs.)

REQUIREMENT
Check that all the hooking claws are fixed at
the specified positions.

– 100 –
 14. EXPLODED VIEWS AND PARTS LIST
14-1. Outdoor Unit
RAV-GP1101AT8-E, RAV-GP1101AT8J-E
RAV-GP1101AT8-TR, RAV-GP1101AT8J-TR

– 101 –
 Model name RAV-GP
Location
Part No. Description 1101AT8-E 1101AT8J-E
No.
1101AT8-TR 1101AT8J-TR
1 43F19904 HOLDER, SENSOR (TS) 3 3
2 43F32441 NIPPLE, DRAIN 1 1
3 43F47401 BONNET, 3/8 IN 1 1
4 43F47669 NUT, FLANGE 2
5 43049739 CUSHION, RUBBER 3 3
6 43141530 COMPRESSOR, RX420A3F-27M 1 1
7 43F50407 THERMOSTAT,BIMETAL 1 1
8 43F60029 FILTER, NOISE 1 1
9 43F63317 HOLDER,THERMOSTAT 1 1
10 43197164 NUT, FLANGE 2
11 43197174 NUT, COMP 3
12 43F97212 NUT 3
13 43100437 PANEL, FRONT, PIPING 1 1
14 43100438 PANEL, BACK, PIPING 1 1
15 43100439 PANEL, FRONT 1 1
16 43100440 PLATE, ROOF 1 1
17 43100470 PANEL, SIDE 1 1
18 43100442 PANEL, AIR OUTLET 1 1
19 43100443 BASE ASSY 1 1
20 43107274 GUARD, FIN, SIDE 1 1
21 43107275 GUARD, FIN, BACK 1 1
22 43107276 HANGER 3 3
23 43119540 GUARD, FAN ASSY 2 2
24 43120244 FAN, PROPELLER, PB521 2 2
25 43122113 BELL MOUTH 2 2
26 4312C100 MOTOR, FAN, ICF-280-A100-1 (A) 2 2
27 43146676 JOINT,CHECK 1 1
28 4314N092 VALVE, PACKED, 9.52 1 1
29 37546878 VALVE, 4-WAY, STF-H0404 1 1
30 4314N080 COIL, SOLENOID, STF-H01AJ1736A1 1 1
31 43146724 VALVE, BALL, SBV-JA5GTC-1, ROHS 1 1
32 43148294 ACCUMULATOR 1 1
34 43151301 SWITCH, PRESSURE 1 1
35 43160612 LEAD ASSY, COMPRESSOR 1 1
36 43147194 BONNET, 5/8 IN 1 1
37 4311M659 MARK, TOSHIBA 1 1
38 4314G266 CONDENSER ASSY, DOWN 1
39 4314G268 CONDENSER ASSY, DOWN 1
40 4314G269 CONDENSER ASSY, UP 1
41 4314G271 CONDENSER ASSY, UP 1
42 4314N023 VALVE, PLUS, MODULAING, UKV-25D100 1 1
43 4314N025 COIL, PMV, UKV-A038 1 1
44 4314Q031 STRAINER 1 1
45 4314Q032 STRAINER 1 1
46 43158227 REACTOR 1 1

– 102 –
Outdoor Unit
RAV-GP1401AT8-E, RAV-GP1401AT8J-E
RAV-GP1401AT8-TR, RAV-GP1401AT8J-TR

– 103 –
 Model name RAV-GP
Location
Part No. Description 1401AT8-E 1401AT8J-E
No.
1401AT8-TR 1401AT8J-TR
1 43F19904 HOLDER, SENSOR (TS) 3 3
2 43F32441 NIPPLE, DRAIN 1 1
3 43F47401 BONNET, 3/8 IN 1 1
4 43F47669 NUT, FLANGE 2
5 43049739 CUSHION, RUBBER 3 3
6 43141530 COMPRESSOR, RX420A3F-27M 1 1
7 43F50407 THERMOSTAT,BIMETAL 1 1
8 43F60029 FILTER, NOISE 1 1
9 43F63317 HOLDER,THERMOSTAT 1 1
10 43197164 NUT, FLANGE 2
11 43197174 NUT, COMP 3
12 43F97212 NUT 3
13 43100437 PANEL, FRONT, PIPING 1 1
14 43100438 PANEL, BACK, PIPING 1 1
15 43100439 PANEL, FRONT 1 1
16 43100440 PLATE, ROOF 1 1
17 43100470 PANEL, SIDE 1 1
18 43100442 PANEL, AIR OUTLET 1 1
19 43100443 BASE ASSY 1 1
20 43107274 GUARD, FIN, SIDE 1 1
21 43107275 GUARD, FIN, BACK 1 1
22 43107276 HANGER 3 3
23 43119540 GUARD, FAN ASSY 2 2
24 43120244 FAN, PROPELLER, PB521 2 2
25 43122113 BELL MOUTH 2 2
26 4312C100 MOTOR, FAN, ICF-280-A100-1 (A) 2 2
27 43146676 JOINT,CHECK 1 1
28 4314N092 VALVE, PACKED, 9.52 1 1
29 37546878 VALVE, 4-WAY, STF-H0404 1 1
30 4314N080 COIL, SOLENOID, STF-H01AJ1736A1 1 1
31 43146724 VALVE, BALL, SBV-JA5GTC-1, ROHS 1 1
32 43148294 ACCUMULATOR 1 1
34 43151301 SWITCH, PRESSURE 1 1
35 43160612 LEAD ASSY, COMPRESSOR 1 1
36 43147194 BONNET, 5/8 IN 1 1
37 4311M659 MARK, TOSHIBA 1 1
38 4314G266 CONDENSER ASSY, DOWN 1
39 4314G268 CONDENSER ASSY, DOWN 1
40 4314G269 CONDENSER ASSY, UP 1
41 4314G271 CONDENSER ASSY, UP 1
42 4314N023 VALVE, PLUS, MODULAING, UKV-25D100 1 1
43 4314N025 COIL, PMV, UKV-A038 1 1
44 4314Q031 STRAINER 1 1
45 4314Q032 STRAINER 1 1
46 43158227 REACTOR 1 1

– 104 –
Outdoor Unit
RAV-GP1601AT8-E, RAV-GP1601AT8J-E
RAV-GP1601AT8-TR, RAV-GP1601AT8J-TR

– 105 –
 Model name RAV-GP
Location
Part No. Description 1601AT8-E 1601AT8J-E
No.
1601AT8-TR 1601AT8J-TR
1 43F19904 HOLDER, SENSOR (TS) 3 3
2 43F32441 NIPPLE, DRAIN 1 1
3 43F47401 BONNET, 3/8 IN 1 1
4 43F47669 NUT, FLANGE 2
5 43049739 CUSHION, RUBBER 3 3
6 43141530 COMPRESSOR, RX420A3F-27M 1 1
7 43F50407 THERMOSTAT,BIMETAL 1 1
8 43F60029 FILTER, NOISE 1 1
9 43F63317 HOLDER,THERMOSTAT 1 1
10 43197164 NUT, FLANGE 2
11 43197174 NUT, COMP 3
12 43F97212 NUT 3
13 43100437 PANEL, FRONT, PIPING 1 1
14 43100438 PANEL, BACK, PIPING 1 1
15 43100439 PANEL, FRONT 1 1
16 43100440 PLATE, ROOF 1 1
17 43100470 PANEL, SIDE 1 1
18 43100442 PANEL, AIR OUTLET 1 1
19 43100443 BASE ASSY 1 1
20 43107274 GUARD, FIN, SIDE 1 1
21 43107275 GUARD, FIN, BACK 1 1
22 43107276 HANGER 3 3
23 43119540 GUARD, FAN ASSY 2 2
24 43120244 FAN, PROPELLER, PB521 2 2
25 43122113 BELL MOUTH 2 2
26 4312C100 MOTOR, FAN, ICF-280-A100-1 (A) 2 2
27 43146676 JOINT,CHECK 1 1
28 4314N092 VALVE, PACKED, 9.52 1 1
29 37546878 VALVE, 4-WAY, STF-H0404 1 1
30 4314N080 COIL, SOLENOID, STF-H01AJ1736A1 1 1
31 43146724 VALVE, BALL, SBV-JA5GTC-1, ROHS 1 1
32 43148294 ACCUMULATOR 1 1
34 43151301 SWITCH, PRESSURE 1 1
35 43160612 LEAD ASSY, COMPRESSOR 1 1
36 43147194 BONNET, 5/8 IN 1 1
37 4311M659 MARK, TOSHIBA 1 1
38 4314G266 CONDENSER ASSY, DOWN 1
39 4314G268 CONDENSER ASSY, DOWN 1
40 4314G269 CONDENSER ASSY, UP 1
41 4314G271 CONDENSER ASSY, UP 1
42 4314N023 VALVE, PLUS, MODULAING, UKV-25D100 1 1
43 4314N025 COIL, PMV, UKV-A038 1 1
44 4314Q031 STRAINER 1 1
45 4314Q032 STRAINER 1 1
46 43158227 REACTOR 1 1

– 106 –
14-2. Inverter Assembly
RAV-GP1101AT8(J)-E, RAV-GP1401AT8(J)-E, RAV-GP1601AT8(J)-E
RAV-GP1101AT8(J)-TR, RAV-GP1401AT8(J)-TR, RAV-GP1601AT8(J)-TR

705 714 712 720

702 704
718, 719 720

711 718, 719 717 713 720

721 710 708 709

715
TE
TS 706
TO
TD
707
TL

701

– 107 –
 Model name RAV-GP
Location
Part No. Description 1101AT8(J)-E, 1401AT8(J)-E, 1601AT8(J)-E
No.
1101AT8(J)-TR, 1401AT8(J)-TR, 1601AT8(J)-TR
701 43F58288 REACTOR, CH-56-4Z 1
702 43154177 RELAY 1
704 43158207 REACTOR, CH-68 1
705 43153006 PTC-THERMISTOR 1
706 43050425 SENSOR ASSY, SERVICE 3
707 43150319 SENSOR ASSY, SERVICE 2
708 43160565 TERMINAL BLOCK, 3P, 20A 1
709 43160579 TERMINAL, 30A, 4P 1
710 43F60859 FUSE BLOCK, 30A, 250V 1
711 4316V416 PC BOARD ASSY, MCC-1596, COMP-IPDU 1
712 4316V391 PC BOARD ASSY, MCC-1597, FAN-IPDU 1
713 4316V534 PC BOARD ASSY, MCC-1599, CDB 1
714 4316V398 PC BOARD ASSY, MCC-1600, N/F 1
715 43F63325 HOLDER, SENSOR (TE) 1
717 43160590 FUSE 3
718 43282001 BUSHING 5
719 43183020 COLLAR 5
720 43F63248 SUPPORTER, ASSY 2
721 43060700 FUSE, 10A, 250V 1

– 108 –
 72-34 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8585, JAPAN
Copyright © 2019 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

Revision record
First issue — — Mar., 2019
Revision 1 Words were corrected. All the pages Sep., 2019

Revision 2 The service part number was changed. Page 108 Oct., 2019
(PC BOARD ASSY, MCC-1599, CDB)