Service manual
30
[Procedure]
1. Press the CHECK button twice.
2. Press the temperature
buttons.
3. Point the remote controller at the
sensor on the indoor unit and
press the HOUR button.
4. Point the remote controller at the
sensor on the indoor unit and
press the ON/OFF button.
• "CHECK" lights, and refrigerant
address "00" flashes.
• Check that the remote controller's
display has stopped before continuing.
• Select the refrigerant address of the
indoor unit for the self-diagnosis.
Note: Set refrigerant address using the
outdoor unit’s DIP switch (SW1).
(For more information, see the
outdoor unit installation manual.)
• If an air conditioner error occurs, the
indoor unit's sensor emits an intermit-
tent buzzer sound, the operation light
flashes, and the error code is
output.
(It takes 3 seconds at most for error
code to appear.)
• The check mode is cancelled.
Inspected unit
Check code
P1
P2
P4
P5
P6
P8
P9
E4, E5
Beep output
beep O 1 time
beep O 2 times
beep O 4 times
beep O 5 times
beep O 6 times
beep O 8 times
beep O 2 times
Other than above
Operation LED
1 sec. O 1 time
1 sec.O 2 times
1 sec.O 4 times
1 sec.O 5 times
1 sec.O 6 times
1 sec.O 8 times
1 sec.O 2 times
Other than above
Indoor unit
Inspected unit
Check code
F1–F9
U0–UP
E6–EE
No check code
(normal)
Beep output
beep beep O 1 time
Other than above
No output
beep beep beep
Operation LED
(0.4sec+0.4sec)
O 1 time
Other than above
Lights off
Lights off
Outdoor
unit
No check code
(mistake of match-
ing with refrigerant
address)
✽ Malfunction diagnosis can be performed only for refrigerant system control-
ling wireless units.
<Malfunction-diagnosis method at maintenance service>
9-2. Malfunction-diagnosis method by remote controller
<In case of trouble during operation>
When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform
unusual stop.
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
RESET
SET
CLOCK
CHECK
CHECK
display
Temperature
button
CHECK
button
Refrigerant
address
display
HOUR
button
ON/OFF
button
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