A-7_1.qxp 07.3.

12 5:55 PM Page 297

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A.7 REMOTE CONTROLLER AND TROUBLESHOOTING

A.7.1 FUNCTIONS.......................................................................................A-298
A.7.2 APPEARANCE...................................................................................A-299
A.7.2.1 WIRED REMOTE CONTROLLER ......................................A-299
A.7.2.2 WIRELESS REMOTE CONTROLLER ...............................A-300
A.7.3 OUTLINES AND DIMENSIONS .........................................................A-301
A.7.4 INSTALLATION PROCEDURE ..........................................................A-303
A.7.5 TROUBLESHOOTING .......................................................................A-308

SHOOTING
CONTROLLER
AND TROUBLE-
REMOTE

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A.7.1 FUNCTIONS(PAR-21MAA)
Available when connected
Function Description SUZ, MXZ,
PUHZ
PU(H)
Easy maintenance function Displays information necessary for maintenance.
Below information for easy maintenance of air-condi-
tioner can be displayed.
· Compressor · Accumulated operating time
· Number of ON/OFF times
· Operating current (A)
· Outdoor unit · Heat exchanger temperature(:)
· Discharge temperature(:)
· Outside air temperature(:)
· Indoor unit · Room air temperature(:)
· Heatexchanger temperature
· Filter operating time (hours)
Operation data monitor function Information necessary for maintenance can be dis-
played on the remote controller.
Operation Hz fixing The operation state of inverter models can be moni-
SHOOTING
AND TROUBLE-
CONTROLLER
REMOTE

tored using the maintenance stable-operation control

(fixed frequency).
Error code monitor function Error code is displayed in the service inspection moni-
FUNCTIONS

tor.
Contact number display Displays the contact telephone number to be called
when an error occurs.
Multi language display In addition to English, contents can be displayed in
seven other languages.
· English, German, Spanish, Russian,
Italian, Chinese, French, Japanese
Temperature display(:/˚F)setting Enables you to set the unit (:/˚F) in which tempera-
tures are to be displayed.
Intake air temperature display setting Enables you to set whether to show or hide the indoor
(intake air) temperature.
Auto heat/cool display setting Enables you to set whether to display or hide COOL /
HEAT in auto mode.
Weekly schedule timer Provides a built-in weekly timer that allows you to make
on/off and temperature settings.
Up to eight patterns can be set for each day of the
week.
Operation limit function setting Lets you disable all the buttons or all the buttons except
(Operation lock) for the [ON/OFF] button, preventing mischief and in-
correct operations.
Temperature range limit function Enables you to establish upper and lower limits for the
temperature setting. This prevents overcooling or over-
heating, thereby contributing to energy saving.
Clock function setting Enables you to set whether to use the clock function.
Auto off timer Stops operation when the preset time elapses follow-
ing the start of operation.
The time can be set from 30 minutes to 4 hours in 30-
minute increments.
By default, the weekly timer is selected.
To switch to the auto off timer, select it using the remote
controller`s function selection.
Simple timer Enables you to set on/off settings in 1-hour increments
within 72 hours.
Remote controller main/sub setting Enables you to set the remote controller as the main or
sub.

: Available : Not available

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A.7.2 APPEARANCE
A.7.2.1 WIRED REMOTE CONTROLLER
“Sensor” indication
Display Section
Displayed when the remote controller
Day-of-Week sensor is used.
For purposes of this explanation,
Shows the current day of the week.
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit. Time/Timer Display
Shows the current time, unless the simple or Auto Off “Locked” indicator
timer is set. Indicates that remote controller but-
If the simple or Auto Off timer is set, the time to be tons have been locked.
switched off is shown.
Identifies the current operation
Shows the operating mode, etc. “Clean The Filter” indicator
*Multilanguage display is available. To be displayed on when it is time to
clean the filter.

TIME SUN MON TUE WED THU FRI SAT

TIMER Hr ON
AFTER AFTER OFF Timer indicators
ERROR CODE FUNCTION The indicator comes on if the corre-
˚F˚C FILTER sponding timer is set.
“Centrally Controlled” indicator ˚F˚C WEEKLY

SHOOTING
CONTROLLER
AND TROUBLE-
SIMPLE

REMOTE
Indicates that operation from the ONLY1Hr. AUTO OFF
remote controller has been prohib-
ited by a master controller. Fan Speed indicator
Shows the selected fan speed.

APPEARANCE
Up/Down Air Direction indica- Room Temperature display
Ventilation indicator
tor Shows the room temperature. The room
“Timer is Off” indicator Appears when the unit is running in
The indicator shows the direc- temperature display range is 8–39:.
Indicates that the timer is off. Ventilation mode.
tion of the outcoming airflow. The display blinks if the temperature
is less than 8: or 39: or more.
“One Hour Only” indicator
Displayed if the airflow is set to Louver display
Low or downward during COOL Indicates the action of the swing louver.
Temperature Setting or DRY mode. (Operation varies Does not appear if the louver is not
Shows the target temperature. according to model.) running.
The indicator goes off in one hour,
at which time the airflow direction (Power On indicator)
also changes. Indicates that the power is on.

Operation Section
Temperature setting buttons ON/OFF button

Down
Fan Speed button
Up

Timer Menu button

(Monitor/Set button)
Filter button
Mode button (Return button) (<Enter> button)

Test Run button

TEMP. ON/OFF
Set Time buttons Check button (Clear button)

Back MENU ON/OFF FILTER

Ahead
BACK MONITOR/SET DAY CHECK TEST
Airflow Up/Down button
Timer On/Off button PAR-21MAA CLOCK OPERATION CLEAR
(Set Day button)
Louver button
( Operation button)

To return operation
Opening the number
lid

Ventilation button
Built-in temperature sensor ( Operation button)
To go to next operation
number

Note:
● “PLEASE WAIT” message
This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.
● “NOT AVAILABLE” message
This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).
If a single remote controller is used to operate multiple indoor units simultaneously that are of different types, this message will not be displayed
as far as any of the indoor units is equipped with the function.

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A.7.2.2 WIRELESS REMOTE CONTROLLER

When cover is open

Transmission area

Transmission indicator
Remote controller display
Timer indicator
*For explanation purposes, all of the items
that appear in the display are shown.
*All items are displayed when the Reset
button is pressed.

Operation areas
ON/OFF button

Temperature setting buttons

Fan Speed button (Changes fan speed) Timer Off button

SHOOTING
AND TROUBLE-
CONTROLLER
REMOTE

Timer On button
Airflow button (Changes up/down airflow direction) Hour button
APPEARANCE

Minute button
Mode button (Changes operation mode)
Set Time button (Sets the time)

Check button Louver button (Changes left/right airflow direction)

Test Run button

Reset button

■ When using the wireless remote controller, point it towards the receiver on the indoor unit. Battery installation/replacement
■ If the remote controller is operated within approximately two minutes after power is supplied
to the indoor unit, the indoor unit may beep twice as the unit is performing the initial auto- 1.Remove the top cover, insert two AAA batter-
matic check. ies, and then install the top cover.
■ The indoor unit beeps to confirm that the signal transmitted from the remote controller has
been received. Signals can be received up to approximately 7 meters in a direct line from
the indoor unit in an area 45 to the left and right of the unit. However, illumination such as
fluorescent lights and strong light can affect the ability of the indoor unit to receive signals. 1
■ If the operation lamp near the receiver on the indoor unit is flashing, the unit needs to be
2
inspected. Consult your dealer for service.
■ Handle the remote controller carefully! Do not drop the remote controller or subject it to 3
Top cover
strong shocks. In addition, do not get the remote controller wet or leave it in a location with
high humidity. Two AAA batteries
■ To avoid misplacing the remote controller, install the holder included with the remote con- Insert the negative (–)
troller on a wall and be sure to always place the remote controller in the holder after use. end of each battery
first. Install the batter-
ies in the correct direc-
tions (+, –)!

2.Press the Reset button.

Press the Reset button

with an object that has
a narrow end.

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A.7.3 OUTLINES AND DIMENSIONS

unit : mm

WIRED REMOTE CONTROLLER

130

120

SHOOTING
CONTROLLER
AND TROUBLE-
REMOTE

OUTLINES AND DIMENSIONS

19

External colors
Cover : white (Munsell 6.9Y 8.9/0.4)
LCD peripheral area : Medium gray

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unit : mm

WIRELESS REMOTE CONTROLLER

58
SHOOTING
AND TROUBLE-
CONTROLLER
REMOTE
OUTLINES AND DIMENSIONS

159.3

55
19

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A.7.4 INSTALLATION PRODEDURE

B 1 Remote controller
A 1. 1 For wired remote controller
1) Installing procedures
30

(1) Select an installing position for the remote controller.(Fig. 1-1)

The temperature sensors are located on both remote controller and indoor unit.
30 30
D Procure the following parts locally:
46
A C
Two piece switch box
83.5

E
Thin copper conduit tube
Lock nuts and bushings
F I A Remote controller profile
G
C B Required clearances surrounding the remote controller
H
120

C Installation pitch
(2) Seal the service entrance for the remote controller cord with putty to prevent pos-
sible invasion of dew drops, water, cockroaches or worms. (Fig. 1-2)
Fig. 1-1 A For installation in the switch box:
B For direct installation on the wall select one of the following:
B-1. B-2. • Prepare a hole through the wall to pass the remote controller cord (in order to run
B the remote controller cord from the back), then seal the hole with putty
H • Run the remote controller cord through the cut-out upper case, then seal the cut-
H I out notch with putty similarly as above.
J
B-1. To lead the remote controller cord from the back of the controller:

SHOOTING
CONTROLLER
AND TROUBLE-
REMOTE
B-2. To run the remote controller cord through the upper portion:
I (3) For direct installation on the wall
C Wall
D Conduit

INSTALLATION PROCEDURE
E Lock nut
F Bushing
G Switch box
Fig. 1-2 H Remote controller cord
I Seal with putty
A J Wood screw
2) Connecting procedures (Fig. 1-3)
1 Connect the remote controller cord to the terminal block.
A To TB5 on the indoor unit
B TB6 (No polarity)
AB TB6 3) Two remote controllers setting
If two remote controllers are connected, set one to “Main” and the other to “Sub”. For
B setting procedures, refer to “Function selection of remote controller” in the operation
Fig. 1-3 manual for the indoor unit.

1. 2 For wireless remote controller

1 1) Installation area
• Area in which the remote controller is not exposed to direct sunshine.
C MODEL SELECT
• Area in which there is no nearby heating source.
A • Area in which the remote controller is not exposed to cold (or hot) winds.
B ON/OFF TEMP
• Area in which the remote controller can be operated easily.
• Area in which the remote controller is beyond the reach of children.
A
2) Installation method (Fig. 1-4)
3 1 Attach the remote controller holder to the desired location using two tapping screws.
2 FAN AUTO STOP
2 Place the lower end of the controller into the holder.
MODE VANE AUTO START
A Remote controller
CHECK LOUVER h B Wall
TEST RUN min
C Display panel
D Receiver
2 ,4
SET RESET CLOCK
• The signal can travel up to approximately 7 meters (in a straight line) within 45
degrees to both right and left of the center line of the receiver.
D 3) Setting (Fig. 1-5)
1 Insert batteries.
Fig. 1-4 Fig. 1-5 2 Press the SET button with something sharp at the end.
MODEL SELECT blinks and Model No. is lighted.
3 Press the temp button to set the Model No.
4 Press the SET button with something sharp at the end.
MODEL SELECT and Model No. are lighted for three seconds, then turned off.

Indoor Outdoor AModel No.

PLH, PCH, PKH (35, 50) PUH 001
PUH, PUHZ, SUZ 001
PLA, PCA, PKA (35, 50)
PU 033
PKH (60, 71, 100) PUH 003
PUH, PUHZ, SUZ 003
PKA-F (50, 60, 71, 100)
PU 035

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4) Assigning a remote controller to each unit (Fig. 1-6)

Each unit can be operated only by the assigned remote controller.
MODEL SELECT A Make sure each pair of an indoor unit PC board and a remote controller is assigned
to the same pair No.
5) Wireless remote controller pair number setting operation
1 Press the SET button with something sharp at the end.
ON/OFF TEMP
Start this operation from the status of remote controller display turned off.
MODEL SELECT blinks and Model No. is lighted.
3 min
FAN AUTO STOP 2 Press the button twice continuously.
MODE VANE AUTO START
Pair No. “0” blinks.
3 Press the temp button to set the pair number you want to set.
CHECK LOUVER h
4 Press the SET button with something sharp at the end.
TEST RUN min Set pair number is lighted for three seconds then turned off.
2
1 ,4
SET RESET CLOCK A Pair No. of wireless remote controller Indoor PC board
0 Factory setting
1 Cut J41
2 Cut J42
Fig. 1-6 3–9 Cut J41, J42

2 Function settings
2. 1 Function setting on the unit (Selecting the unit functions)
Mode number 1) For wired remote controller (Fig. 1-7)
Setting number Changing the power voltage setting
SHOOTING
AND TROUBLE-
CONTROLLER
REMOTE

Refrigerant address • Be sure to change the power voltage setting depending on the voltage used.
Unit number 1 Go to the function setting mode.
TEMP. ON/OFF
F Switch OFF the remote controller.
MENU ON/OFF FILTER
A Press A and B buttons simultaneously and hold them for at least 2
E BACK MONITOR/SET DAY CHECK TEST
seconds. FUNCTION will start to blink.
INSTALLATION PROCEDURE

PAR-21MAA CLOCK OPERATION B

2 Use the C button to set the refrigerant address ( ) to 00.
CLEAR

G
3 Press D and [--] will start to blink in the unit number ( ) display.
4 Use the C button to set the unit number ( ) to 00.
C D 5 Press the E MODE button to designate the refrigerant address/unit number. [--]
will blink in the mode number ( ) display momentarily.
6 Press the F buttons to set the mode number ( ) to 04.
7 Press the G button and the current set setting number ( ) will blink.
Use the F button to switch the setting number in response to the power supply
voltage to be used.
Power supply voltage
240 V : setting number = 1
220 V, 230 V : setting number = 2
8 Press the MODE button E and mode and the setting number ( ) and( ) will
change to being on constantly and the contents of the setting can be confirmed.
9 Press the FILTER A and TEST RUN B buttons simultaneously for at least two
seconds. The function selection screen will disappear momentarily and the air
Fig. 1-7 conditioner OFF display will appear.

2) For wireless remote controller (Fig. 1-8)

1 2 Changing the power voltage setting
CHECK CHECK • Be sure to change the power voltage setting depending on the voltage used.
CHECK 1 Go to the function select mode
CHECK
Press the button F twice continuously.
(Start this operation from the status of remote controller display turned off.)
ON/OFF TEMP CHECK is lighted and “00” blinks.
Press the temp button C once to set "50". Direct the wireless remote controller
E h

C ,D
3 4 toward the receiver of the indoor unit and press the button A.
CHECK CHECK
FAN AUTO STOP 2 Setting the unit number
Press the temp button C and D to set the unit number "00". Direct the wireless
MODE VANE AUTO START
min
remote controller toward the receiver of the indoor unit and press the button B .
CHECK LOUVER h
F A 3 Selecting a mode
TEST RUN min
Enter 04 to change the power voltage setting using the C and D buttons.
B
SET RESET CLOCK Direct the wireless remote controller toward the receiver of the indoor unit and press
h
the button A .
Current setting number: 1 = 1 beep (one second)
2 = 2 beeps (one second each)
3 = 3 beeps (one second each)
4 Selecting the setting number
Fig. 1-8 Use the C and D buttons to change the power voltage setting to 01 (240 V).
Direct the wireless remote controller toward the sensor of the indoor unit and press
h
the button A .
5 To select multiple functions continuously
Repeat steps 3 and 4 to change multiple function settings continuously.
6 Complete function selection
Direct the wireless remote controller toward the sensor of the indoor unit and press
the button E .
Note:
Whenever changes are made to the function settings after installation or main-
tenance, be sure to record the changes with a mark in the “Setting” column of
the Function table.

2. 2 Function setting on the remote controller

Refer to the indoor unit operation manual.

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Function table
Select unit number 00
Mode Settings Mode no. Setting no. Initial setting setting
Power failure automatic recovery Not available 1
01
Available *1 2
Indoor temperature detecting *3 Average data from each indoor unit 1
Data from the indoor unit with remote controllers 02 2
Data from main remote controller 3
LOSSNAY connectivity Not Supported 1
Supported (Indoor unit dose not intake outdoor air through LOSSNAY.) 03 2
Supported (Indoor unit intakes outdoor air through LOSSNAY.) 3
Power voltage 240 V 1
04
220 V, 230 V 2
Auto operating mode (only for PUHZ) Auto energy-saving operation ON 1
05
Auto energy-saving operation OFF 2
Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])
Initial setting (Factory setting)
- : Not available setting
Mode Setting 4-Way Ceiling Wall Floor
Function Settings Ceiling suspended
No. No. cassette concealed mounted standing
PEAD-EA(2) PKA-GAL
PLA-BA PEHD-EAH PCA-GA PKH-GALH PSA-GA
PEAD-GA PCH-GAH PCA-HA PKA-FAL PSH-GAH
PEH-MYA PKH-FALH
Filter sign 100Hr 1
2500Hr 07 2
"Clean the filter" indicator is not displayed 3

SHOOTING
CONTROLLER
AND TROUBLE-
Air flow Quiet 1 - - - -

REMOTE
(Fan speed) Standard 08 2 - - - -
High ceiling 3 - - - -
No.of air outlets 4 directions 1 - - - - -
3 directions 09 2 - - - - -

INSTALLATION PROCEDURE
2 directions 3 - - - - -
Installed options Not supported 1 - - - -
(high performance filter) 10
Supported 2 - - - -
Vane setting No vanes (Vane No.3 setting : PLA only) 1 - - - -
Vane No.1 setting 11 2 - - - -
Vane No.2 setting 3 - - - -
Energy saving air OFF 1 - - - -
12
flow (Heating mode) ON 2 - - - -
*1 When the power supply returns, the air conditioner will start 3 minutes later.
*2 Power failure automatic recovery initial setting depends on the connecting outdoor unit.
*3 Can be set only when a wired remote controller is used. This function cannot be set for floor standing models.

2. Test run
2.1. Before test run
After completing installation and the wiring and piping of the indoor and outdoor Do not carry out this test on the control wiring (low voltage circuit) termi-
units, check for refrigerant leakage, looseness in the power supply or control nals.
wiring, wrong polarity, and no disconnection of one phase in the supply. Warning:
Use a 500-volt megohmmeter to check that the resistance between the power Do not use the air conditioner if the insulation resistance is less than 1.0 M".
supply terminals and ground is at least 1.0 M".

F E D 2. 2. Test run
A ON/OFF button
The following 3 methods are available.
B Liquid pipe (Indoor unit)
temperature display 2. 2. 1. Using wired remote controller (Fig. 2-1)
C Test run display Turn on the power at least 12 hours before the test run.
2 Press the [TEST] button twice. “TEST RUN” liquid crystal display
D ON/OFF lamp
C TEST RUN
COOL, HEAT
E Power display 3 Press the [Mode selection] button and switch to the cooling (or heating) mode.
B ˚C
˚C

Make sure that cold (or warm) wind is blown out.

SIMPLE
F Error code display
TEMP. ON/OFF
Test run remaining time display 4 Press the [Fan speed] button. Make sure that the wind speed is switched.
A 5 Press the [Air direction button] or [Louver button].
MENU ON/OFF FILTER G Set temperature button
BACK MONITOR/SET DAY CHECK TEST
H Mode selection button Check operation of the vane or louver.
6 Check operation of the outdoor unit fan.
I
PAR-21MAA CLOCK OPERATION CLEAR
Air direction button
7 Release test run by pressing the [ON/OFF] button. Stop
M TEST button
8 Register a telephone number.
N Fan Speed button
O Louver button The telephone number of the repair shop, sales office, etc., to contact if an error
H G O N I M occurs can be registered in the remote controller. The telephone number will be
Fig. 2-1 displayed when an error occurs. For registration procedures, refer to the opera-
A tion manual for the indoor unit.

2. 2. 2. Using wireless remote controller (Fig. 2-2)

1 Turn on the power to the unit at least 12 hours before the test run.
TEST RUN
TEST RUN
2 Press the button twice continuously.
(Start this operation from the status of remote controller display turned off.)
A TEST RUN and current operation mode are displayed.
ON/OFF TEMP MODE
3 Press the button to activate COOL mode, then check whether
7
cool air is blown out from the unit.
MODE
FAN AUTO STOP 4 Press the button to activate HEAT mode, then check whether
5
MODE VANE AUTO START warm air is blown out from the unit.
3 ,4 6 FAN
CHECK LOUVER h 5 Press the button and check whether fan speed changes.
TEST RUN min VANE
2 6 Press the button and check whether the auto vane operates properly.
SET RESET CLOCK
7 Press the ON/OFF button to stop the test run.
Note:
• Point the remote controller towards the indoor unit receiver while following
Fig. 2-2 steps 2 to 7.
• It is not possible to run the TEST RUN in FAN, DRY or AUTO mode.

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2. Test run
2. 2. 3 Using SW4 in outdoor unit
A B Refer to the outdoor unit installation manual.

B E D 2.3. Self-check
CHECK
2.3.1. Wired remote controller (Fig. 2-3)
1 Turn on the power.
2 Press the [CHECK] button twice.
ERROR CODE
3 Set refrigerant address with [TEMP] button if system control is used.
ON/OFF TEMP
4 Press the [ON/OFF] button to stop the self-check.
4
TEMP. ON/OFF
A CHECK button
C
MENU ON/OFF FILTER B Refrigerant address
BACK MONITOR/SET DAY CHECK TEST FAN AUTO STOP C TEMP. button
PAR-21MAA CLOCK OPERATION CLEAR

MODE VANE AUTO START D IC:Indoor unit

OC:Outdoor unit
CHECK LOUVER h
E Check code
2 3
A TEST RUN min F Unit address

SET RESET CLOCK

2. 3. 2 Wireless remote controller (Fig. 2-4)
ERROR CODE

1 Turn on the power.

CHECK
2 Press the button twice.
B E (Start this operation from the status of remote controller display turned off.)
SHOOTING
AND TROUBLE-
CONTROLLER
REMOTE

A CHECK begins to light.

B “00” begins to blink.
Fig. 2-4
ERROR CODE
h
3 While pointing the remote controller toward the unit’s receiver, press the
button. The check code will be indicated by the number of times that the buzzer
F
INSTALLATION PROCEDURE

sounds from the receiver section and the number of blinks of the operation lamp.
Fig. 2-3 4 Press the ON/OFF button to stop the self-check.

• Refer to the following tables for details on the check codes. (Wireless remote controller)
[Output pattern A]
Beeper sounds Beep Beep Beep Beep Beep Beep Beep

OPERATION 1st 2nd 3rd nth 1st 2nd · · · Repeated

INDICATOR
lamp blinking Off On On On On Off On On
pattern
Self-check Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec. 0.5 sec. Approx. 2.5 sec. 0.5 sec. 0.5 sec.
starts
(Start signal
received) Number of blinks/beeps in pattern indicates the check Number of blinks/beeps in pattern indicates
code in the following table (i.e., n=5 for “P5”) the check code in the following table

[Output pattern B]
Beeper sounds Beep Beep Beep Beep Beep Beep Beep

OPERATION 1st 2nd 3rd nth 1st 2nd · · · Repeated

INDICATOR
lamp blinking Off On On On On On Off On On On
pattern
Self-check Approx. 2.5 sec. Approx. 3 sec. 0.5 sec. 0.5 sec. 0.5 sec. 0.5 sec. Approx. 2.5 sec. Approx. 3 sec. 0.5 sec. 0.5 sec.
starts
(Start signal
received) Number of blinks/beeps in pattern indicates the check Number of blinks/beeps in pattern indicates
code in the following table (i.e., n=5 for “U2”) the check code in the following table

[Output pattern A]Errors detected by indoor unit

Wired remote
Wireless remote controller
controller
Beeper sounds/OPERATION Symptom Remark
INDICATOR lamp blinks Check code
(Number of times)
1 P1 Intake sensor error
P2 Pipe (TH2) sensor error
2
P9 Pipe (TH5) sensor error
3 E6, E7 Indoor/outdoor unit communication error
4 P4 Drain sensor error / Float switch connector open
P5 Drain pump error
5
PA Forced compressor error
6 P6 Freezing/Overheating protection operation
7 EE Communication error between indoor and outdoor units
8 P8 Pipe temperature error
9 E4 Remote controller signal receiving error
10 — —
11 — —
12 Fb Indoor unit control system error (memory error, etc.)
No sound E0, E3 Remote controller transmission error
No sound E1, E2 Remote controller control board error
No sound —— —— No corresponding

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2. Test run
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wired remote
Wireless remote controller
controller
Beeper sounds/OPERATION Symptom Remark
INDICATOR lamp blinks Check code
(Number of times)
1 E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
2 UP Compressor overcurrent interruption
3 U3, U4 Open/short of outdoor unit thermistors
4 UF Compressor overcurrent interruption (When compressor locked)
5 U2 Abnormal high discharging temperature/49C worked/ insufficient refrigerant
6 U1, Ud Abnormal high pressure (63H worked)/ Overheating protection operation
7 U5 Abnormal temperature of heat sink For details, check the LED
8 U8 Outdoor unit fan protection stop display of the outdoor controller
9 U6 Compressor overcurrent interruption/Abnormal of power module board.
10 U7 Abnormality of super heat due to low discharge temperature
Abnormality such as overvoltage or voltage shortage and abnormal
11 U9, UH
synchronous signal to main circuit/Current sensor error
12 — —

SHOOTING
CONTROLLER
AND TROUBLE-
REMOTE
13 — —
14 Others Other errors (Refer to the technical manual for the outdoor unit.)

*1 If the beeper does not sound again after the initial two beeps to con-rm the self-check start signal was received and the OPERATION INDICATOR lamp does

INSTALLATION PROCEDURE
not come on, there are no error records.
*2 If the beeper sounds three times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to con-rm the self-check start signal was
received, the specied refrigerant address is incorrect.
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed on the LCD.

• If the unit cannot be operated properly after the test run, refer to the following table to find out the cause.
Symptom
Cause
Wired remote controller LED 1, 2 (PCB in outdoor unit)
After LED 1, 2 are lighted, LED 2 is turned • For about 2 minutes after power-on, operation of the remote
For about 2 minutes
PLEASE WAIT off, then only LED 1 is lighted. (Correct controller is not possible due to system start-up. (Correct
after power-on
operation) operation)
• Connector for the outdoor unit’s protection device is not
connected.
PLEASE WAIT Error code Only LED 1 is lighted. LED 1, 2 blink.
Reverse or open phase wiring for the outdoor unit’s power
Subsequent to about
terminal block (L1, L2, L3)
2 minutes after power-
No messages appear even when on • Incorrect wiring between indoor and outdoor units (incorrect
Only LED 1 is lighted. LED 1 blinks
operation switch is turned ON polarity of S1, S2, S3)
(operation lamp does not light up). twice, LED 2 blinks once.
• Remote controller wire short

On the wireless remote controller with conditions above, following phenomena take place.
• No signals from the remote controller can be received.
• Operation lamp is blinking.
• The buzzer makes a short ping sound.
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.

LED 1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is always lit.
LED 2 (power for remote controller) Indicates whether power is supplied to the remote controller. This LED lights only in the case of
the indoor unit which is connected to the outdoor unit refrigerant address “0”.
LED 3 (communication between indoor and outdoor units) Indicates state of communication between the indoor and outdoor units. Make sire tha this LED is
always blinking.

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A.7.5 TROUBLESHOOTING
Having trouble? Here is the solution. (Unit is operating normally.)
Air conditioner does not heat or cool well. ■ Clean the filter. (Airflow is reduced when the filter is dirty or clogged.)
■ Check the temperature adjustment and adjust the set temperature.
■ Make sure that there is plenty of space around the outdoor unit. Is the
indoor unit air intake or outlet blocked?
■ Has a door or window been left open?
When heating operation starts, warm air does not blow from the indoor unit ■ Warm air does not blow until the indoor unit has sufficiently warmed up.
soon.
During heating mode, the air conditioner stops before the set room tem- ■ When the outdoor temperature is low and the humidity is high, frost may
perature is reached. form on the outdoor unit. If this occurs, the outdoor unit performs a de-
frosting operation. Normal operation should begin after approximately 10
minutes.
Airflow direction changes during operation or airflow direction cannot be ■ During cooling mode, the vanes automatically move to the horizontal
set. (down) position after 1 hour when the down (horizontal) airflow direction
is selected. This is to prevent water from forming and dripping from the
vanes.
■ During heating mode, the vanes automatically move to the horizontal
airflow direction when the airflow temperature is low or during defrosting
mode.
SHOOTING
AND TROUBLE-
CONTROLLER
REMOTE

When the airflow direction is changed, the vanes always move up and down ■ When the airflow direction is changed, the vanes move to the set position
past the set position before finally stopping at the position. after detecting the base position.
A flowing water sound or occasional hissing sound is heard. ■ These sounds can be heard when refrigerant is flowing in the air condi-
tioner or when the refrigerant flow is changing.
TROUBLESHOOTING

A cracking or creaking sound is heard. ■ These sounds can be heard when parts rub against each due to expan-
sion and contraction from temperature changes.
The room has an unpleasant odor. ■ The indoor unit draws in air that contains gases produced from the walls,
carpeting, and furniture as well as odors trapped in clothing, and then
blows this air back into the room.
A white mist or vapor is emitted from the indoor unit. ■ If the indoor temperature and the humidity are high, this condition may
occur when operation starts.
■ During defrosting mode, cool airflow may blow down and appear like a
mist.
Water or vapor is emitted from the outdoor unit. ■ During cooling mode, water may form and drip from the cool pipes and
joints.
■ During heating mode, water may form and drip from the heat exchanger.
■ During defrosting mode, water on the heat exchanger evaporates and
water vapor may be emitted.
The operation indicator does not appear in the remote controller display. ■ Turn on the power switch. “ ” will appear in the remote controller display.
“ ” appears in the remote controller display. ■ During central control, “ ” appears in the remote controller display and
air conditioner operation cannot be started or stopped using the remote
controller.
When restarting the air conditioner soon after stopping it, it does not oper- ■ Wait approximately three minutes.
ate even though the ON/OFF button is pressed. (Operation has stopped to protect the air conditioner.)
Air conditioner operates without the ON/OFF button being pressed. ■ Is the on timer set?
Press the ON/OFF button to stop operation.
■ Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the air conditioner.
■ Does “ ” appear in the remote controller display?
Consult the concerned people who control the air conditioner.
■ Has the auto recovery feature from power failures been set?
Press the ON/OFF button to stop operation.
Air conditioner stops without the ON/OFF button being pressed. ■ Is the off timer set?
Press the ON/OFF button to restart operation.
■ Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the air conditioner.
■ Does “ ” appear in the remote controller display?
Consult the concerned people who control the air conditioner.
Remote controller timer operation cannot be set. ■ Are timer settings invalid?
If the timer can be set, WEEKLY , SIMPLE , or AUTO OFF appears in
the remote controller display.
“PLEASE WAIT” appears in the remote controller display. ■ The initial settings are being performed. Wait approximately 3 minutes.
An error code appears in the remote controller display. ■ The protection devices have operated to protect the air conditioner.
■ Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be sure
to provide the dealer with the model name and information that appeared
in the remote controller display.
Draining water or motor rotation sound is heard. ■ When cooling operation stops, the drain pump operates and then stops.
Wait approximately 3 minutes.

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Having trouble? Here is the solution. (Unit is operating normally.)

Noise is louder than specifications. ■ The indoor operation sound level is affected by the acoustics of the par-
ticular room as shown in the following table and will be higher than the
noise specification, which was measured in an echo-free room.
High sound- Low sound-
Normal rooms
absorbing rooms absorbing rooms
Broadcasting
Location Reception room, Office, hotel
studio, music
examples hotel lobby, etc. room
room, etc.
Noise levels 3 to 7 dB 6 to 10 dB 9 to 13 dB

Nothing appears in the wireless remote controller display, the display is ■ The batteries are low.
faint, or signals are not received by the indoor unit unless the remote con- Replace the batteries and press the Reset button.
troller is close. ■ If nothing appears even after the batteries are replaced, make sure that
the batteries are installed in the correct directions (+, –).
The operation lamp near the receiver for the wireless remote controller on ■ The self diagnosis function has operated to protect the air conditioner.
the indoor unit is blinking. ■ Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be sure
to provide the dealer with the model name.

SHOOTING
CONTROLLER
AND TROUBLE-
REMOTE

TROUBLESHOOTING

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