ENGLISH

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 Safety Precautions
(Carefully follow the precautions listed below because they are essential to guarantee the safety of the equipment.)

• Always disconnect the air conditioner from the power supply before servicing
WARNING it or accessing its internal components.
• Verify that installation and testing operations are performed by qualified
personnel.
• Verify that the air conditioner is not installed in an easily accessible area.

GENERAL INFORMATION
 Carefully read the content of this manual before installing the air conditioner and store the manual in a safe place in order to
be able to use it as reference after installation.
 For maximum safety, installers should always carefully read the following warnings.
 Store the operation and installation manual in a safe location and remember to hand it over to the new owner if the air
conditioner is sold or transferred.
This manual explains how to install an indoor unit with a split system with two SAMSUNG units. The use of other types of
units with different control systems may damage the units and invalidate the warranty. The manufacturer shall not be
responsible for damages arising from the use of non compliant units.
 The manufacturer shall not be responsible for damage originating from unauthorized changes or the improper connection of electric
and requirements set forth in the “Operating limits” table, included in the manual, shall immediately invalidate the warranty.
 The air conditioner should be used only for the applications for which it has been designed: the indoor unit is not suitable to
be installed in areas used for laundry.
 Do not use the units if damaged. If problems occur, switch the unit off and disconnect it from the power supply.
 In order to prevent electric shocks, fires or injuries, always stop the unit, disable the protection switch and contact SAMSUNG’
stechnical support if the unit produces smoke, if the power cable is hot or damaged or if the unit is very noisy.
 Always remember to inspect the unit, electric connections, refrigerant tubes and protections regularly. These operations
should be performed by qualified personnel only.
 The unit contains moving parts, which should always be kept out of the reach of children.
 Do not attempt to repair, move, alter or reinstall the unit. If performed by unauthorized personnel, these operations may
cause electric shocks or fires.
 Do not place containers with liquids or other objects on the unit.
 All the materials used for the manufacture and packaging of the air conditioner are recyclable.
 The packing material and exhaust batteries of the remote control(optional) must be disposed of in accordance with current laws.
 The air conditioner contains a refrigerant that has to be disposed of as special waste. At the end of its life cycle, the air condi
tioner must be disposed of in authorized centers or returned to the retailer so that it can be disposed of correctly and safely.
INSTALLING THE UNIT
IMPORTANT: When installing the unit, always remember to connect first the refrigerant tubes, then the electrical lines.
Always disassemble the electric lines before the refrigerant tubes.
 Upon receipt, inspect the product to verify that it has not been damaged during transport. If the product appears damaged,
DO NOT INSTALL it and immediately report the damage to the carrier or retailer (if the installer or the authorized technician
has collected the material from the retailer.)
 After completing the installation, always carry out a functional test and provide the instructions on how to operate the air
conditioner to the user.
 Do not use the air conditioner in environments with hazardous substances or close to equipment that release free flames to
avoid the occurrence of fires, explosions or injuries.
POWER SUPPLY LINE, FUSE OR CIRCUIT BREAKER
 Always make sure that the power supply is compliant with current safety standards. Always install the air conditioner in
compliance with current local safety standards.
 Always verify that a suitable grounding connection is available.
 Verify that the voltage and frequency of the power supply comply with the specifications and that the installed power is suf
ficient to ensure the operation of any other domestic appliance connected to the same electric lines.
 Always verify that the cut-off and protection switches are suitably dimensioned.
 Verify that the air conditioner is connected to the power supply in accordance with the instructions provided in the wiring
diagram included in the manual.
 Always verify that electric connections (cable entry, section of leads, protections…) are compliant with the electric specifica
tions and with the instructions provided in the wiring scheme. Always verify that all connections comply with the standards
applicable to the installation of air conditioners.

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 ENGLISH
Contents
 PREPARING THE INSTALLATION
  Deciding on Where to Install the Air Conditioner ...................... 4
  Air Conditioner and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
 INSTALLING THE INDOOR UNIT
  Installing and Connecting the Outdoor Unit Drain Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
  Cutting/Extending the Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
 INSTALLING THE OUTDOOR UNIT
  Connecting the Cables to the Outdoor Unit ........................... 15
  Transmitter Installation (Optional) .................................... 19
  Checking Correct Earthing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
  Fixing the Unit in Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
 COMPLETING THE INSTALLATION
  Connecting Up and Purging the Circuit ............................... 23
  Adding Refrigerant ................................................... 24
  Performing Leak Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
  Pipe Installation with Indoor Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
  Switch Setting and Testing Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
  Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
  Explaining Operations to the Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
 COMBINATION TABLE

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 PREPARING THE INSTALLATION

Deciding on Where to Install the Air Conditioner

When deciding on the location of the air conditioner with the owner, the following restrictions
must be taken into account.
General
Do NOT install the air conditioner in a location where it will come into contact with the following elements:
 Combustible gases
 Saline air
 Machine oil
 Sulphide gas
 Special environmental conditions
If you must install the unit in such conditions, first consult your dealer.

Outdoor Unit
 The outdoor unit must NEVER be placed on its side or upside down, as the compressor lubrication oil will run into
the cooling circuit and seriously damage the unit.
 Choose a location that is dry and sunny, but not exposed to direct sunlight or strong winds.
 Do not block any passageways or thoroughfares.
 Choose a location where the noise of the air conditioner when running and the discharged air do not disturb any
neighbours.
 Choose a position that enables the piping and cables to be easily connected to the indoor unit and the recommend-
ed length will be respected.
 Install the outdoor unit on a flat, stable surface that can support its weight and does not generate any unnecessary
noise and vibration.
 Position the outdoor unit so that the air flow is directed towards the outside, as indicated by the arrows on the top
of the unit.
 Maintain sufficient clearance around the outdoor unit, as indicated in the diagram on the page opposite.
 Make sure that the water dripping from the drain hose runs away correctly and safely.

CAUTION
 You have just purchased a Free Joint Multi air conditioner and it has been installed by your
installation specialist.
 This device must be installed according to the national electrical rules.
 Max input power & current is measured according to IEC standard and input power & current is
measured according to ISO standard.
 More than 2 indoor units should be installed when you use Free Joint Multi air conditioner.
The units must be installed according to distances declared, in order to permit accessibility from
each side, either to guarantee correct operation of maintenance or repairing products. The unit’s
parts must be reachable and removable completely under safety condition (for people or things).
 The cost needed to reach and repair the outdoor unit (in SAFETY CONDITION according to decree of
law 626/94) , installed above 3.0 meters height (from the floor) will be charged to final customer.
 With an outdoor unit having net weight upper then 60kg,we suggest do not install it suspended on
wall, but considering floor standing one.

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 PREPARING THE INSTALLATION

ENGLISH
MH040FXA2B

Piping outside diameter

Power supply Outside diameter
Indoor unit Outdoor unit Unit
Ø, V, Hz Liquid Gas
020/023/026/035 MH040FXA2B 1,220-240, 50 020/023/026/035 1/4" 3/8"

MH040FXA2B outdoor unit cannot be connected to the following indoor unit combination.
-052/MHFMA/MHFEA/MHFUA

200 mm
or more

100 mm 160 mm
or more or more

CAUTION:
3 m as minimum pipe length: It will reduce (h) (H)
noise and vibration.
This value must be increased at 7.5 meters in
case it is connected just one indoor unit.

600 mm
minimum
A B

300 mm
minimum 300 mm
minimum

600 mm
minimum

Piping length and the height

1 Room max 2 Room total max Max height between Max height between
length length indoor unit & outdoor unit indoor units
Dimension 20m 30 m 15m 7.5 m
Composition A,B A+B (H) (h)

System can work with one indoor unit connected, but it is recommended that the TOTAL number of
indoor unit suggested by manufacturer are connected to obtain the maximum performance.

Make at least one round:

It will reduce noise and vibration

The appearance of the unit may be different from the diagram depending on the model.

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 PREPARING THE INSTALLATION

Deciding on Where to Install the Air Conditioner (Continued)

MH050FXA2B

Piping outside diameter

Power supply Outside diameter
Indoor unit Outdoor unit Unit
Ø, V, Hz Liquid Gas
020/023/026/035/052 MH050FXA2B 1,220-240, 50 020/023/026/035 3/8"
1/4"
052 1/2"

MH052FXA2B outdoor unit cannot be connected to the following indoor unit combination.
-MH052FMEA/MH052FUEA

200 mm
or more

100 mm 160 mm
or more or more

CAUTION:
3 m as minimum pipe length: It will reduce (h) (H)
noise and vibration.
This value must be increased at 7.5 meters
in case it is connected just one indoor unit.

600 mm
minimum
300 mm 300 mm
minimum A B
minimum

600 mm
minimum

Main power switch

Piping length and the height
1 Room max 2 Room total max Max height between Max height between
length length indoor unit & outdoor unit indoor units
Dimension 20m 30 m 15m 7.5 m
Composition A,B A+B (H) (h)

System can work with one indoor unit connected, but it is recommended that the TOTAL number
of indoor unit suggested by manufacturer are connected to obtain the maximum performance.

Make at least one round:

It will reduce noise and vibration

The appearance of the unit may be different from the diagram depending on the model.

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 PREPARING THE INSTALLATION

ENGLISH
MH060FXA3B

Piping outside diameter

Power supply Outside diameter
Indoor unit Outdoor unit Unit
Ø, V, Hz Liquid Gas
020/023/026/030/035/052 MH060FXA3B 1,220-240, 50 020/023/026/030/035 3/8"
1/4"
052 1/2"

200 mm
or more

100 mm 160 mm
or more or more

CAUTION: (h) (H)

3 m as minimum pipe length: It will reduce
noise and vibration.
This value must be increased at 7.5 meters in
case it is connected just one indoor unit.

600 mm A
minimum B
C

300 mm
minimum 300 mm
minimum

600 mm
minimum

Main power switch

Piping length and the height

1 Room max 3 Room total max Max height between Max height between
length length indoor unit & outdoor unit indoor units
Dimension 20m 45 m 15m 7.5 m
Composition A,B,C A+B+C (H) (h)

System can work with one indoor unit connected, but it is recommended that the TOTAL number
of indoor unit suggested by manufacturer are connected to obtain the maximum performance.

Make at least one round:

It will reduce noise and vibration

The appearance of the unit may be different from the diagram depending on the model.

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 PREPARING THE INSTALLATION

Deciding on Where to Install the Air Conditioner (Continued)

MH070FXA4B / MH080FXA4B

Piping outside diameter

Power supply Outside diameter
Indoor unit Outdoor unit Unit
Ø, V, Hz Liquid Gas
MH070FXA4B 020/023/026/030/035 1/4" 3/8"
020/023/026/030/035/052 1,220-240, 50
MH080FXA4B 052 1/4" 1/2"

200 mm
or more

160 mm
100 mm or more
or more

CAUTION: (h) (H)

3 m as minimum pipe length: It will
reduce noise and vibration.
This value must be increased at 7.5
meters in case it is connected just one
indoor unit.

600 mm
minimum A B C D

300 mm 300 mm
minimum minimum

600 mm
minimum

Main power switch

Piping length and the height

1 Room max 4 Room total max Max height between Max height between
length length indoor unit & outdoor unit indoor units
Dimension 25m 70 m 15m 7.5 m
Composition A,B,C,D A+B+C+D (H) (h)

System can work with one indoor unit connected, but it is recommended that the TOTAL number
of indoor unit suggested by manufacturer are connected to obtain the maximum performance.

Make at least one round:

It will reduce noise and vibration

The appearance of the unit may be different from the diagram depending on the model.

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 PREPARING THE INSTALLATION

ENGLISH
MH18VF1X/MH19VF1X Piping outside diameter
Power supply Outer Diameter
Indoor unit Outdoor unit Unit
Ø, V, Hz Liquid Gas
MH18VF1-09 MH18VF1X MH18VF1-09
MH19VF1-07 1,220-240~, 50 MH19VF1-07 1/4" 3/8"
MH19VF1X MH19VF1-12
MH19VF1-12

Respect the clearances and maximum lengths indicated in the diagram below when installing the unit.

CAUTION: B-unit
3 m as minimum pipe length: It will reduce MH18VF1-09 or
noise and vibration. MH19VF1-12
This value must be increased at 7.5 meters
in case it is connected just one indoor unit.

200 mm
or more
A-unit MH19VF1-07 or
MH18VF1-09
(h) (H)
100 mm 160 mm
or more or more

600 mm A B
minimum

300 mm 300 mm
minimum minimum

600 mm
minimum

Main power switch

Piping length and the height

1 Room max 2 Room total max Max height between Max height between
length length indoor unit & outdoor unit indoor units
Dimension 20m 30 m 15m 7.5 m
Composition A,B A+B (H) (h)

System can work with one indoor unit connected, but it is recommended that the TOTAL number
of indoor unit suggested by manufacturer are connected to obtain the maximum performance.

Make at least one round:

It will reduce noise and vibration

The appearance of the unit may be different from the diagram depending on the model.

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 PREPARING THE INSTALLATION

Deciding on Where to Install the Air Conditioner (Continued)

Space Requirements for Outdoor Unit

When installing 1 outdoor unit

Unit : mm

300 or more

1500 or more
When the air outlet is opposite the wall When the air outlet is towards the wall

1500 or more
300 or more

2000 or more

150 or more 600 or more

When 3 sides of the outdoor unit are The upper part of the outdoor unit and
blocked by the wall the air outlet is towards the wall

300 or more
500 or more

300 or more

1500 or more

The upper part of the outdoor unit and When front and rear side of the outdoor
the air outlet is opposite the wall unit is towards the wall

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 PREPARING THE INSTALLATION

ENGLISH
When installing more than 1 outdoor unit
Unit : mm

1500 or more
 When the air outlet is towards the wall

300 or more
300 or more 600 or more 600 or more 600 or more
 When 3 sides of the outdoor unit are blocked by the wall
1500 or more 300 or more

600 or more 600 or more

 When front and rear side of the outdoor unit is towards the wall

1500 or more 600 or more 3000 or more 3000 or more 200 or more
 When front and rear side of the outdoor unit is towards the wall
500 or more

300 or more
500 or more

300 or more

The upper part of the outdoor unit and

the air outlet is opposite the wall

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 PREPARING THE INSTALLATION

Air Conditioner and Accessories

The following accessories are supplied with the air conditioner.

Accessories in the Outdoor Unit Case
 MH040FXA2B/MH050FXA2B/MH060FXA3B/MH18VF1X/MH19VF1X
3-wire 2-wire Drain Plug Transmitter power Energy Label
Power Cable Assembly Cable cable
(option) (option)

Rubber Leg Flare Bolt Installation Manual

(Nut 1/2”, Bolt 3//8”)
(except MH040FXA2B)

Attach Energy Label to the outdoor unit properly when installing.

 MH070FXA4B / MH080FXA4B
3-wire 2-wire Drain Plug Transmitter power Installation Manual
Power Cable Assembly Cable cable
(option) (option)

Rubber Leg Flare Nuts, 6.35mm Flare Nuts, 9.52mm Flare Bolt Energy Label
outer pipe diameter outer pipe diameter (Nut 1/2”, Bolt 3/8”)

Attach Energy Label to the outdoor unit properly when installing.

 The 3-wire power cable and the 2-wire assembly cable are optional. If these cables are not supplied, use the
standard cable approved by IEC standard.
Please, check “Connecting the Cables to the Outdoor Unit” section.

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 INSTALLING THE INDOOR UNIT

Installing and Connecting the Drain Hose of the Outdoor Unit

ENGLISH
While heating, ice may accumulate. During the process of defrosting, check if
condensation draining is adequate. For adequate draining, do the following:

1 Insert the drain plug into the drain hole on the underside of the outdoor unit.

2 Connect the drain hose to the drain plug.

3 Ensure that condensation draining is adequate.

Drain hole

����������

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 INSTALLING THE INDOOR UNIT

Cutting/Extending the Piping

1 Make sure that you have the required tools available (pipe cutter, reamer,
flaring tool and pipe holder).

2 If you wish to shorten the piping, cut it using a pipe cutter, taking care to
ensure that the cut edge remains at a 90° angle with the side of the pipe,
and referring to the illustrations below for examples of edges cut correctly
and incorrectly.
Oblique Rough Burr
��
�

O x x x

3 To prevent any gas from leaking out, remove all burrs at the cut end of the
pipe, using a reamer.

D 4 Slide a flare nut on to the pipe and modify the flare.

A Outer Diameter (D) Depth(A)
6.53mm 1.3mm
9.52 mm 1.8 mm
12.70 mm 2.0 mm

5 Check that the flaring is correct, referring to the illustrations below for examples of incorrect
flaring.

� � � �

Inclined Damaged Surface Cracked Uneven Thickness

6 Align the pipes to be connected and tighten the flare nuts first manually and
then with a torque wrench, applying the following torque.

Outer Diameter Torque (kgf•cm)

6.35 mm 140~170
9.52 mm 250~280
12.70 mm 380~420

7 For further details on how to connect up to the outdoor unit and purge the circuit, refer to
page 23.

In case welding the pipe, the gas nitrogen must be blown into the parts.

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 INSTALLING THE OUTDOOR UNIT

Connecting the Cables to the Outdoor Unit

ENGLISH
When you install the unit, make first refrigerant connections and then elec-
trical connections.Connect the air conditioner to grounding system before
performing the electrical connection.If unit is uninstalled first disconnect
electrical cables, then refrigerant connections.
2 electric cables must be connected to the outdoor unit:
The assembly cable connecting the indoor unit to the outdoor unit.
The power cable connecting the auxiliary circuit breaker to the outdoor unit.
1 Remove the cabinet side RH of the outdoor unit.
2 Connect the assembly cable with the power cable such as figure.(40~70kgf.m)
 Each wire is labelled with the corresponding terminal number.
 Ensure the wire number of the indoor unit and the terminal number of the outdoor unit.
3 Connect the earth wires to the earth terminals.
 Refer to the page 22 for further details on how to check that earthing is correct.
4 Fix the cables with cable clamps near terminal blocks to protect the wire
connection to the terminals from force on the wire.
5 Replace the terminal board cover, carefully tightening the screw. The designs and shape are subject to
6 Connect the power cable to the auxiliary circuit breaker. change according to the model.

MH040FXA2B/MH050FXA2B/MH18VF1X/MH19VF1X
A-unit Indoor unit B-unit

1(L) 2(N) F1 F2 1(L) 2(N) F1 F2

Assembly cable
1 2 F1 F2 1 2 F1 F2

Earth Earth
terminal terminal
B C B C

1 2 F1 F2 1 2 F1 F2
Earth Earth
terminal terminal

Outdoor unit
1(L) 2(N) 1(L) 2(N) F1 F2 F1 F2
L N Main Power
supply cable
� � � �
Power cable to indoor units 1 2 Communication cable
Earth to indoor units
� Cable Type: A terminal
� Cable Type: B A
� Cable Type: C

The specification for cables :

Main Power Supply Cable Indoor Power Supply Cable Communication Cable Type GL
Model FUSE MCCB
Specication Type Specication Type Specication Type
MH040FX*A2B
MH050FX*A2B Frame : 30A
MH18VF1X 20A 20A
Trip : 20A
MH19VF1X 3G, 2.5mm2 or 3G, 1.0mm2 or 2G, 0.75mm2 or
more, � more, � more, �
H07RN-F H07RN-F H07RN-F Frame : 30A
MH060FX*A3B 20A 25A
Trip : 25A
MH070FX*A4B 30A Frame : 30A 30A
MH080FX*A4B Trip : 30A
 Connect the power cable to the auxiliary circuit breaker.
If every pole fails to connect to the power supply, it must be
incorporated in a wire with a contact opening of ≥3mm.
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 INSTALLING THE OUTDOOR UNIT

Connecting the Cables to the Outdoor Unit(Continued)

MH060FXA3B

A-unit B-unit Indoor unit C-unit

1(L) 2(N) F1 F2 1(L) 2(N) F1 F2 1(L) 2(N) F1 F2

Assembly cable
1 2 F1 F2 1 2 F1 F2 1 2 F1 F2

Earth Earth Earth

terminal terminal terminal
B C B C B C

1 2 F1 F2 1 2 F1 F2 1 2 F1 F2
Earth Earth
Earth terminal terminal
terminal

Outdoor unit

1(L) 2(N) 1(L) 2(N) 1(L) 2(N) Main Power F1 F2 F1 F2 F1 F2

L N supply cable
A B C
A B C
1 2
Power cable to indoor units
Communication cable
Earth to indoor units
A terminal

� Cable Typeυ: A
� Cable Type: B
� Cable Type: C

The specification for cables :

Main Power Supply Cable Indoor Power Supply Cable Communication Cable Type GL
Model FUSE MCCB
Specication Type Specication Type Specication Type
MH040FX*A2B
MH050FX*A2B Frame : 30A
MH18VF1X 20A 20A
Trip : 20A
MH19VF1X 3G, 2.5mm2 or 3G, 1.0mm2 or 2G, 0.75mm2 or
more, � more, � more, �
H07RN-F H07RN-F H07RN-F Frame : 30A
MH060FX*A3B 20A 25A
Trip : 25A
MH070FX*A4B 30A Frame : 30A 30A
MH080FX*A4B Trip : 30A

 Connect the power cable to the auxiliary circuit breaker.

If every pole fails to connect to the power supply, it must be
incorporated in a wire with a contact opening of ≥3mm.

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 INSTALLING THE OUTDOOR UNIT

ENGLISH
MH070FXA4B / MH080FXA4B

A-unit B-unit Indoor unit C-unit D-unit

1(L) 2(N) F1 F2 1(L) 2(N) F1 F2 1(L) 2(N) F1 F2 1(L) 2(N) F1 F2

Assembly cable
1 2 F1 F2 1 2 F1 F2 1 2 F1 F2 1 2 F1 F2

Earth Earth Earth Earth

terminal terminal terminal terminal
B C B C B C B C

1 2 F1 F2 1 2 F1 F2 1 2 F1 F2 1 2 F1 F2

Earth Earth Earth Earth

terminal terminal terminal terminal

Outdoor unit

Main Power
1(L) 2(N) 1(L) 2(N) 1(L) 2(N) 1(L) 2(N) F1 F2 F1 F2 F1 F2 F1 F2
L N supply cable

A B C D
A B C D
1 2 Communication cable
Power cable to indoor units
Earth to indoor units
terminal
A

� Cable Type: A
� Cable Type: B
� Cable Type: C

The specification for cables :

Main Power Supply Cable Indoor Power Supply Cable Communication Cable Type GL
Model FUSE MCCB
Specication Type Specication Type Specication Type
MH040FX*A2B
MH050FX*A2B Frame : 30A
MH18VF1X 20A 20A
Trip : 20A
MH19VF1X 3G, 2.5mm2 or 3G, 1.0mm2 or 2G, 0.75mm2 or
more, � more, � more, �
H07RN-F H07RN-F H07RN-F Frame : 30A
MH060FX*A3B 20A 25A
Trip : 25A
MH070FX*A4B 30A Frame : 30A 30A
MH080FX*A4B Trip : 30A

 Connect the power cable to the auxiliary circuit breaker.

If every pole fails to connect to the power supply, it must be
incorporated in a wire with a contact opening of ≥3mm.

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 INSTALLING THE OUTDOOR UNIT

Connecting the Cables to the Outdoor Unit (Continued)

Preparation of cables for outdoor unit terminal block

1 2 E  Main power supply cable: L(mm)
Cable of
1 2 E
indoor unit
Main Power 20 20 90
L(mm)
 Power cable to indoor units: L(mm)
Cable of
1 2 E Remark
indoor unit
A 60 60 80

B 60 60 80
For
C 70 70 110 060/070/080
only
For
D 90 90 90 070/080
only
 Communication cable to indoor units : L(mm)
Cable of
1 2 Remark
indoor unit

 The designs and shape are subject

to change according to the model. B
15 15
For
C 060/070/080
only
For
D 070/080
only

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 INSTALLING THE OUTDOOR UNIT

Transmitter Installation (Optional)

ENGLISH
 MH040FXA2B/MH18VF1X/MH19VF1X
Accessories (Transmitter: MIM-B13)
Transmitter Transmitter power Transmitter Installation Manual Case Cable-tie
cable communication cable

Bolts spec.
7seg. LED
1 Fix the case at with bolts on the side of the control box in the outdoor unit. M4
Display side
(See the picture)

2 Attach the transmitter PCB to the case in the control box in the outdoor
Terminal
Transmitter
unit, then connect the power and the communication cable between the side
transmitter and the outdoor unit; refer to the figure of page 19.

3 If you install a transmitter to an outdoor unit, every indoor unit which is

connected to an outdoor unit can be controlled simultaneously.

4 Each outdoor unit connected to the same centralized controller has its
own transmitter.

Fix the case with hinges

(Control Box in the outdoor unit)

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 INSTALLING THE OUTDOOR UNIT

Transmitter Installation (Optional) (Continued)

 MH050FXA2B/MH060FXA3B/MH070FXA4B / MH080FXA4B
Accessories(Transmitter: MIM-B13)
Transmitter Transmitter power Transmitter Installation Manual Case Cable-tie
cable communication cable

MH050FXA2B

Terminal
side

Transmitter

7seg. LED
Display side
Bolts spec.
M4

1 Fix the case with bolts on the control box in the outdoor unit.
(See the picture)

2 Attach the transmitter PCB to the case in the control box in the outdoor
unit, then connect the power and the communication cable between the
transmitter and the outdoor unit; refer to the figure of page 19.

Fix the case with bolts 3 If you install a transmitter to an outdoor unit, every indoor unit which is
(Control Box in the outdoor unit) connected to an outdoor unit can be controlled simultaneously.
MH060FXA3B/MH070FXA4B / MH080FXA4B
4 Each outdoor unit connected to the same centralized controller has its
Terminal own transmitter.
side Transmitter

7seg. LED
Display side

Fix the case with bolts

(Control Box in the outdoor unit)

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 INSTALLING THE OUTDOOR UNIT

Transmitter power cable

ENGLISH
CN01
(Accessory in the outdoor unit)
(Whit)

Transmitter CN03
(Blue)
PCB

MH040FXA2B CN01
MH050FXA2B/MH060FXA3B (Whit)
Center MH070FXA4B/MH080FXA4B MH18VF1X/MH19VF1X
Controller Outdoor unit PCB

Transmitter communication
One housing is used for connection cable (Accessory in the
although there are 2 housings on the
communication cable. transmitter)

Terminal Block in the outdoor unit Terminal Block in the outdoor unit Terminal Block in the outdoor unit

MH070FXA4B/MH080FXA4B MH060FXA3B MH040FXA2B/MH050FXA2B

MH18VF1X/MH19VF1X

The designs and shape are subject to

change according to the model.

K1 K2 K3 K4

Change DIPswitch-K2 in all

indoor units PCB (K2 : ON OFF)

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 INSTALLING THE OUTDOOR UNIT

Checking Correct Earthing

If the power distribution circuit does not have an earth or the earth does not comply with
specifications, an earthing electrode must be installed. The corresponding accessories are
not supplied with the air conditioner.
1 Select an earthing electrode that complies with the specifications given in
Carbon Steel the illustration opposite.
plastic core
2 Determine a suitable location for the earthing electrode:
To  In damp hard soil rather than loose sandy or gravel soil that has a higher
PVC-insulated green/ earthing earthing resistance
yellow wire, 2mm2 x 3.5 m screw  Away from underground structures or facilities, such as gas pipes, water
pipes, telephone lines and underground cables
 At least two meters away from a lightening conductor earthing electrode
and its cable.
 The earthing wire for the telephone line cannot be used to earth the air conditioner.
3 Dig a hole of the size indicated in the illustration opposite, drive the
50 cm
earthing electrode into position and cover the top of the electrode
with the excavated soil.
30 cm

4 Install a green/yellow insulated earthing wire (Ø1.6 mm, section 2 mm2 or greater):
 If the earthing wire is too short, connect an extension lead, soldering the connec
tion and wrapping it with insulating tape (do not bury the soldered connection)
 Secure the earthing wire in position with staples
 If the earthing electrode is installed in an area of heavy traffic, its wire
must be connected securely.
5 Carefully check the installation, by measuring the earthing resistance with
an earthing resistance tester. If the resistance is above the required
level(Example:100Ω), drive the earthing electrode deeper into the ground
or increase the number of earthing electrodes.
6 Connect the earthing wire to the earthing screw on the air conditioner.

Fixing the Unit in Position

The outdoor unit must be installed on a rigid and stable base to avoid any increase in the noise
‘X’ mm
level and vibration, particularly if the outdoor unit is to be installed close to a neighbour.
If it is to be installed in a location exposed to strong winds or at a height, the unit must be
‘Y’ mm

fixed to an appropriate support (wall or ground).

Rubber leg 1 Position the outdoor unit so that the air flow is directed towards the
outside, as indicated by the arrows on the top of the unit.

Model X Y 2 Attach the outdoor unit to the appropriate support using anchor bolts.
MH040FXA2B
MH18VF1X 543 319
MH19VF1X 3 If the outdoor unit is exposed to strong winds, install shield plates around
MH050FXA2B the outdoor unit, so that the fan can operate correctly.
MH060FXA3B
MH070FXA4B 660 350
MH080FXA4B  Certainly fix up its rubber leg in order to prevent its vibration
and noise.
Designed to cut off
residual vibration from OUTDOOR UNIT INSTALLED ON THE WALL BY RACK
outdoor unit to rack. (not
supplied with product)
- Ensure the wall will be able to suspend the weight of rack and outdoor unit;
- Install the rack close to the colum as much as possible;
- Install proper grommet in order to reduce noise and residual vibration trans-
ferred by outoor unit towards wall.
Soft rubber designed to cut
off vibration from rack to wall.
(not supplied with product)

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 COMPLETING THE INSTALLATION

Connecting Up and Purging the Circuit

ENGLISH
The outdoor unit is loaded with sufficient R410A refrigerant.Do not vent
R-410A into atmosphere: it is a fluorinated greenhouse gas, covered by Kyoto
Protocol, with a Global Warming Potential (GWP) = 1975.
You should purge the air in the indoor unit and in the pipe.
If air remains in the refrigerant pipes, it affects the compressor. It may cause
reduction of cooling capacity and malfunction.
Refrigerant for air purging is not charged in the outdoor unit.
Use Vacuum Pump as seen in the picture.
 MH040FXA2B / MH052FXA2B / MH18VF1X/MH19VF1X
1 Check the piping connections.
2 Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port (MH040FXA2B:3/8” service valve 2EA; Indoor
A-unit
MH052FXA2B:3/8” service valve 1EA+1/2” service valve 1EA) as shown at
Indoor
the figure. B-unit

WARNING:
Make the electrical connection and leave the system into “stand by mode”. Do
not turn on the system!. Vacuum
This is necessary for better vacuum operation (full OPEN position of Electronic Pump
Expansion Valve - EEV -).

3 Open the valve of the low pressure side of manifold gauge counter-clockwise.

4 Purge the air from the system using vacuum pump for about 10 minutes. Valve stem
- Close the valve of the low pressure side of manifold gauge clockwise.
- Make sure that pressure gauge show -0.1MPa(-76cmHg) after about 10
minutes. Stem cap
This procedure is very important in order to avoid gas leak.
- Turn off the vacuum pump
- Remove the hose of the low pressure side of manifold gauge.
Service port

5 Set valve cork of both liquid side and gas side of packed valve to the open
position.
6 Mount the valve stem nuts and the service port cap to the valve,
and tighten them at the torque of 183kgf•cm with a torque wrench.

7 Check for gas leakage.

- At this time, especially check for gas leakage from the 3-way valve’s stem
nuts, and from the service port cap..

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 COMPLETING THE INSTALLATION

Connecting Up and Purging the Circuit(Cont.)

 MH060FXA3B/MH070FXA4B / MH080FXA4B

1 Check the piping connections.

2 Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port (5/8” Packed valve) as shown at the
figure (Value stem: 1/2” - 20UNF).

WARNING:
Make the electrical connection and leave the system into “stand by mode”. Do
not turn on the system!.
A This is necessary for better vacuum operation (full OPEN position of Electronic
B
C
Expansion Valve - EEV -).

Vacuum 3 Open the valve of the low pressure side of manifold gauge
Pump counter clockwise.

4 Purge the air from the system using vacuum pump for about 30 minutes.
- Close the valve of the low pressure side of manifold gauge clockwise.
- Make sure that pressure gauge show -0.1MPa(-76cmHg) after about
30 minutes.
Valve stem This procedure is very important in order to avoid gas leak.
- Turn off the vacuum pump.
- Remove the hose of the low pressure side of manifold gauge.
Stem cap
5 Set valve cork of both liquid side and gas side of packed valve to the open
position.

6 Mount the valve stem nuts and the service port cap to the valve, and tighten
Service port them at the torque of 183kgf•cm with a torque wrench.

7 Check for gas leakage.

- At this time, especially check for gas leakage from the 3-way valve’s stem
nuts, and from the service port cap.

Adding Refrigerant

If you install the excessive length of pipe, add additional refrigerant as 10g per unit
meter ; refer to the table below.

Refer to the Service Manual for more details on this operation.

Model Total connecting pipe length (L) Adding refrigerant

LT≤15m Chargeless
MH040FX*A2B
LT>15m (LT- 15m)x10g
LT≤20m Chargeless
MH050FX*A2B
LT>20m (LT- 20m)x10g
LT≤30m Chargeless
MH060FX*A3B
LT>30m (LT- 30m)x10g
MH070FX*A4B LT≤40m Chargeless
MH080FX*A4B LT>40m (LT- 40m)x10g

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 COMPLETING THE INSTALLATION

Important information regulation regarding the

refrigerant used
This product contains fluorinated greenhouse gases covered by the Kyoto

ENGLISH
Protocol. Do not vent gases into the atmosphere.
Refrigerant type GWP value
CAUTION : R410A 1975
Inform user if system contains 3 kg or more of fluorinated greenhouse gases. In this
case, it has to be checked for leakage at least once every 12 months, according to  GWP=Global Warming Potential
regulation n¢X842/2006. This activity has to be covered by qualified personnel only.
Contains fluorinated greenhouse gases
In case situation above (3 kg or more of R-410A), installer (or recognised person covered by the Kyoto Protocol.
which has responsability for final check) has to provide a maintenance book, with all
the information recorded according to REGULATION (EC) N¢X 842/2006 OF THE EU- Indoor unit
ROPEAN PARLIAMENT AND OF THE COUNCIL of 17 May 2006 on certain fluorinated
greenhouse gases.
Please fill in with indelible ink, 
d 
- the factory refrigerant charge of the product,
- the additional refrigerant amount charged in the field and a Outdoor unit
- + the total refrigerant charge. = ( ) kg
on the refrigerant charge label supplied with the product. + = ( ) kg
Note a. Factory refrigerant charge of the product: see unit name plate = ( ) kg
b c
b. Additional refrigerant amount charged in the field
(Refer to the above information for the quantity of refrigerant
replenishment.)
c. Total refrigerant charge
d. Refrigerant cylinder and manifold for charging
 The filled-out label must be adhered in the proximity of the product
charging port (e.g. onto the inside of the stop valve cover).

Performing Leak Tests

Before completing the installation (insulation of the cables, hose and C D
piping and fixing of the indoor unit to the installation plate), you
must check that there are no gas leaks.
To check for gas leaks on the... Then, using a leak detector,check the ...
Indoor unit Flare nuts at the end of sections C and D.
Outdoor unit Valves on sections A and B.
MH040FXA2B/MH050FXA2B
LEAK TEST WITH NITROGEN (before opening valves) MH18VF1X/MH19VF1X
In order to detect basic refrigerant leaks, before recreating the vacuum and recircu-
lating the R-410A, it’s responsable of installer to pressurize the whole system with
nitrogen (using a cylinder with pressure reducer) at a pressure above 30 bar (gauge).

LEAK TEST WITH R-410A (after opening valves) A

Before opening valves, discharge all the nitrogen into the system and create vacuum
according to page 23 ~24.
After opening valves, check leaks using a leak detector for refrigerant.
MH060FXA3B
PUMP DOWN (before disconnecing t the refrigerant connections for unit repair,
removal or disposal)
Pump-down is an operation intended to collect all the system refrigerant in the outdoor unit.
This operation must be carried out before disconnecting the refrigerant pipe in order
to avoid refrigerant loss to the atmosphere.
A

- Shut off all the liquid valve with the Allen wrench. B
C

- Turn the system on in cooling with fan operating at high velocity.

(Compressor will immediately start, provided 3 minutes have elapsed since the last stop). MH070FXA4B/MH080FXA4B
- After 2 minutes of operation, shut down the suction valves with the same wrench.
- Turn the system off and switch mains supply off.
- Disconnect pipes. After disconnection, protect valves and tubing ends from dust.
- Compressor damage may occur if run at a negative suction pressure.

The designs and shape are subject to change according to the model.
A
B
C

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 COMPLETING THE INSTALLATION

Pipe Installation with Indoor Units

 MH070FXA4B / MH080FXA4AB
Follow different orders depending on the capacity of indoor units.

OUTDOOR UNIT MH020/023/026/030/035FEA

 Install pipes between indoor and outdoor units orderly as[AB CD].

MH052FEA
 Install pipes between indoor and outdoor units orderly as [ CD].

Examples
A unit  2Rooms: MH035FVEA+MH052FVEA

B unit
A MH035FVEA A
C unit MH052FVEA
B B
MH035FVEA
D unit C C
MH052FVEA
D D

(o) (x)

A MH035FVEA
B
MH052FVEA
C

(x)
 3Rooms: MH026FVEA+MH035FVEA+MH052FVEA

A MH026FVEA A MH052FVEA
B B
MH035FVEA MH035FVEA
C C
MH052FVEA MH026FVEA
D D

(o) (x)

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 COMPLETING THE INSTALLATION

Switch Setting and Testing Operation

ENGLISH
To complete the installation, perform the following checks and tests
to ensure that the air conditioner is operating correctly.

Step 1 Review all the following elements in the installation:

 Installation site strength
 Piping connection tightness to detect any gas leakage
 Connection wiring
 Heat-resistant insulation of the piping
 Drainage
 Earthing wire connection

Step 2 IMPORTANT!
Before selecting switch turn off the system power supply

- Select rotary switch “SW01” of outdoor

unit display PCB, according to number
of indoor unit connected:
SW02 SW01

SW01 SW01

K1
Switch
DIS01 DIS02

Indoor unit ex) con- ex) con-

address necting necting
with 2 with 4
indoor indoor
K2 K3 K4
units. units.
View data display

Advise control we are going to proceeed

with manual addressing as follow:

SW 02
Manual - Move dip switch
SW02 SW01
addressing n°1 of “SW02
- outdoor unit dis-
K1 play PCB” down;
Switch
DIS01 DIS02

Indoor unit
address
Move down the
switch n°1
K2 K3 K4

View data display

Step 3 Follow of indication reported into table below for indoor unit addressing

Step 4 Turn on the system power supply and waiting for 60 seconds after estabi-
lishing communication between outdoor and indoor units.
During this phase, the left display of outdoor unit display PCB “DIS01” will
count fom 00--01--02 to 15.
Estabilished communication the left display will count sequentially:
00--communication with indoor unit A;
01--communication with indoor unit B;
02--communication with indoor unit C;
03--communication with indoor unit D;

In case of Manual address mode,you can do pipe check operation for check
whether you connect the pipes correctly or not.
But you need set indoor address switch yourselves.
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 COMPLETING THE INSTALLATION

Switch Setting and Testing Operation(Cont.)

TO SET ADDRESSING MANUALLY BY

TYPE PICTURE MODEL
ROTARY SWITCH “SW02”
Same for:

MH020FV(N)EA
MH023FBEA
RAC MH026FB(V/N)EA
MH035FB(V/N)EA
MH052FB(V/N)EA

MH026FKEA
1 WAY CASSETTE
MH035FKEA

MH030FMEA
MINI 4 WAY MH035FMEA
MH052FMEA

SLIM DUCT MH026FEEA

MH035FEEA
MSP-DUCT MH052FUEA

MH026FJEA
CONSOLE
MH035FJEA

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 COMPLETING THE INSTALLATION

ENGLISH
ROTARY SWITCH “SW02” POSITION ACCORDING TO REFRIGERANT CIRCUIT
CONNECTED ( 0=A; 1=B; 2=C; 3=D )
OUTDOOR UNIT Indoor Unit
SW02
A unit

B unit

Indoor Unit
OUTDOOR UNIT
SW02

A unit
B unit
C unit

Indoor Unit
OUTDOOR UNIT SW02

A unit
B unit
C unit
D unit

INSTALLATION TEST MODE (with all indoor units functioning)

Please do cool mode try-run or heat mode try run.
Cool mode try-run : Push the [K2] button three times.
Heat mode try-run : Push the [K2] button once.
After 12 minutes of stationary condition check each indoor unit air treatment:
Cooling mode (indoor unit check) --> Inlet air temp. - Outlet air temp: From 10°K to 12°K ( indicative delta T)
Heating mode (indoor unit check) --> Outlet air temp. - Inlet air temp: From 11°K to 14°K (indicative delta T)
In heating mode, the indoor fan motor can remain off to avoid cold air blown into conditioned space.
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 COMPLETING THE INSTALLATION

Switch Setting and Testing Operation (Cont.)

 It could take maximum 60 minutes to operate for the protection of the compressor
if the outdoor temperature is below -5°C.
Ampere Limit Setting & Changing Procedure
WARNING
 Do not adjust the “Ampere Limit Switch”, if it’s not necessary: before modifying
it, evaluate the total number of electric and electronics loads consumption and
use “Ampere limits switch” just as emergency solution or in case the system is
anyway oversized compared to real thermal load needed.
 “Ampere Limit Switch” is initially set to the default value (table below).
 “Ampere Limit Switch” is on the PCB of outdoor unit.
The designs and shape are subject to
change according to the model.  Contact the authorized service technician or dealer for setting and changing
the “Ampere Limit Switch”.
 Before changing the “Ampere Limit Switch”, turn off the main power of the system.

Ampere Switch Selection

MH040FXA2B
MH070FXA4B
MH18VF1X MH050FXA2B MH060FXA3B Switch 3 4
MH080FXA4B
MH19VF1X
SW02 SW01

9.0A 13.5A 14.5A 16.6A

ON ON
(Default) (Default) (Default) (Default)
K1 (OFF)
Switch
DIS01 DIS02

8.5A 11.0A 13.0A 14.0A ON OFF

Indoor unit
(OFF)
address

8.0A 9.0A 10.0A 11.0A OFF ON

K2 K3 K4 (OFF)

View data display 7.0A 8.0A 8.0A 10.0A OFF OFF

(OFF)
Outdoor PCB Display

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 COMPLETING THE INSTALLATION

Pipe Checking Operation (Auto Addressing Mode)

ENGLISH
Switch the system on and wait for code " " to appear on the display of Red Button K1
the external unit (this requires approximately 60 seconds **).
As soon as code " "displays, press once the red button (K1) shown on
the figure on the side of the page:

WARNING !!
If the quantity of indoor units connect-
ed is lower than maximum connectable
to outdoor unit, the rotary switch SW01
has to be positioned, in order to select a
number equal to indoor units’ quantity SW01
you connected.

After the operations described above have been performed, the system starts
in Cooling or Heating mode, depending on the external ambient temperature.
After a few minutes (from a minimum of 3 to 5 minutes for the internal Display 1 Display 2
unit), the system stops automatically, completing the self-test and addressing
procedure.
 " " appears on the display of the external unit.
20 seconds after the display of " " (that confirms the correct execution
of the procedure), the following codes (if four internal units are connected) dis
play in sequence on the display of the external unit:

Display of the external unit

Display 1 Display 2 Description
The outdoor unit is communication correctly togeth-
 During the initial 60 seconds, dis-
er the indoor unit connected to refrigerant pipe A.
play 1 shows in sequence: 0001
The outdoor unit is communication correctly togeth- 02 ...1500...
er the indoor unit connected to refrigerant pipe B.
The outdoor unit is communication correctly togeth-
er the indoor unit connected to refrigerant pipe C.
The outdoor unit is communication correctly togeth-
er the indoor unit connected to refrigerant pipe D.

At this point it is possible to start the internal units

in the desired mode

If " "doesn’t display, the procedure has failed and it is therefore
necessary to read ALL the operator’s manual before repeating the operating
described in steps 1-2-3-4.

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 COMPLETING THE INSTALLATION

Switch Setting and Testing Operation (Cont.)

Settings of PCB Display of the Outdoor unit

Key Options of PCB Display
- K1 : pipe checking operation button - K2 : Function button
- K3 : Reset button - K4 : View mode change button
Key
SW02 SW01
Push K1 K2 K3 K4

K1
Switch Pipe Checking Operation Heat Mode Try run
1
DIS01 DIS02 (Display: ) (Display: )
Indoor unit
Refrigerant Charging
address View mode
2 - (Display: ) Reset
change
Cool Mode Try run
K2 K3 K4
3 - (Display: )
View data display Pump down
4 - (Display: )
Outdoor PCB Display
Heat and Cool Mode Try run functions are just For Service Technician

K4 View mode Display changes

Push Display Explanation Push Display Explanation

0 Present Compressor Frequency 8 Discharge temperature

1 Target Compressor Frequency 9 OLP temperature

2 Order Compressor Frequency 10 Condenser temperature

3 EEV0 current step 11 Outdoor temperature

4 EEV1 current step 12 First current

5 EEV2 current step 13 Target Discharge temperature

6 EEV3 current step3 14 Total capacity of the indoor units

Fan RPM Safety Control (just For Service
7 15
(H: high, L: low, Blank: off) Technician)

 The EEV 2 and EEV 3 of MH040FXA2B/MH050FXA2B/MH18VF1X/

MH19VF1X models are always displayed as blank.
 The EEV 3 of MH060FXA3B model is always displayed as blank.

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 COMPLETING THE INSTALLATION

Troubleshooting

ENGLISH
The table below give indication about self diagnostic routine. Some of error code requires activities
exclusively for Authorise Service Center.
The error indicated on the PCB display of outdoor unit

DISPLAY EXPLANATION (The error indicated on the PCB display of outdoor unit) REMARK
Check electrical connection
Communiaction error(indoor unable to receive data)
and setting
Outdoor unit communication error Check electrical connection
(Abnormal data from indoor unit over 60 packet) and setting
Indoor unit room temperature sensor error (Open/Short)
Indoor unit heat exchanger in temperature sensor error (Open/Short)
Indoor unit heat exchanger out temperature sensor error (Open/Short)
Indoor unit sensor error-Evaporator pipe in sensor - Self diagnosis
Indoor unit sensor error-Evaporator pipe out sensor - Self diagnosis
Indoor Unit FAN Error
More than two indoor units cool and heat simultaneously
Indoor Unit EEPROM Error
Indoor Unit EEPROM Option Error
Check piping connection
Failure of pipe check operation
and setting
No pipe check operation check
- occasion : try to operation after the installation through auto addressing Check setting
mode without pipe check operation.
Check electrical
The number of Indoor unit mismatched
connection and setting
Check electrical
Communication error between the outdoor and indoor unit
connection and setting
Outdoor communication error between main PCB and sub PCB
Outside temperature sensor error(Short/Open)
- Error level: over 4.9V(-50°C) under 0.4V(93°C)
Condenser temperature sensor error(Short/Open)
- Error level: over 4.9V(-50°C) under 0.4V(93°C)
Outdoor unit sensor error - Condenser out sensor(Short/Open) - Self diagnosis
Compressor Discharge temperature sensor error
Compressor discharge sensor detached - Self diagnosis
Compressor OLP sensor error (Short/Open)
- Error condition : outdoor temperature under -20°C
- Error level : over 4.95V(-30°C) under 0.5V(151°C)

E-33

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 COMPLETING THE INSTALLATION

Troubleshooting (Cont.)
The table below give indication about self diagnostic routine. Some of error code requires activities
exclusively for Authorise Service Center.

The error indicated on the PCB display of outdoor unit

DISPLAY EXPLANATION (The error indicated on the PCB display of outdoor unit) REMARK
check pipe lenght, indoor
Outdoor unit freezing(Compressor stop) unit filter, refrigerant leakage/
charge and service port
check pipe lenght, refrigerant
Outdoor unit overload - Safety control(Compressor stop)
leakage/charge
Outdoor unit high discharge temperature - Safety control check pipe lenght, refrigerant
(Compressor stop) leakage/charge
Outdoor unit EEV open (Stopped indoor unit’s) -Self diagnosis
Outdoor unit EEV open (operating indoor unit’s) -Self diagnosis
High temperature(over 30°C) of outdoor as heating mode
Low temperature(under -10°C) of outdoor as cooling mode
Outdoor Fan Error
Communication cable mismatched between indoor
Check electrical connection
and outdoor unit
Inverter compressor starting failure (5 times)
Compressor trip by input current control mode (PFC over current)
Compressor trip by OLP temperature control mode
DC peak error (IPM Over Current)
Compressor Vlimit Error
DC link Voltage error (under 150V, over 410V)
Abnormal compressor running
(Compressor Rotation Error)
Current sensor error
DC link Voltage sensor error
OTP Error
Inverter micom zero-crossing error

Explaining Operations to the Owner

Before leaving the premises on which you have installed the air conditioner,
you should explain the following operations to the owner, making
reference to the appropriate pages in the owner’s instruction booklet.
1 How to start and stop the air conditioner.
2 How to select the operating mode and adjust the temperature and fan
settings.
3 How to adjust the air flow direction.
4 How to set the timers.
5 How to remove and clean the filters.

 Once the owner is happy with the basic operations, hand over the owner’s
instruction booklet and this installation manual for storage in a handy and
safe place.

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 COMBINATION TABLE

ENGLISH

E-35

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08'FJM_OUTDOOR_28896A_IM_E_2.19.08.indd 36 2008-2-20 8:39:48
 INSTALLATION
MANUAL

ENGLISH
Free Joint Fixed
MH040FXA2B MH18VF1X
MH050FXA2B MH19VF1X

ESPAÑOL
MH060FXA3B
MH070FXA4B
MH080FXA4B

FRANÇAIS
ITALIANO
PORTUGUÊS
DEUTSCH
Free Joint Multi & Multi-Split Type Room Air Conditioner
(Cooling and Heating)

EΛΛHNIKA

E S F I P D G DB98-28896A(3)

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