[F29]
(Power ON)
(Approx. 3 minutes) (Approx. 1 minute)
Ye s
No
[F31]
Indoor other error
Indoor P.C. board error
This error is detected during operation of air conditioner of IC10 (IC503) non-volatile memory (EEPROM) on
indoor unit P.C.board. Replace service P.C. board.
* If EEPROM was not inserted when power was turned on or it is absolutely impossible to read/write
EEPROM data, the automatic address mode is repeated. In this case, [97 error] is displayed on AI-NET
central controller.
[SET DATA]
is displayed
on remote
controller.
[SET DATA]
disappears.
LED (D02) 1Hz
flashes for approx.
10 seconds on
indoor unit P.C.
board.
Reboot (Reset)
(Repetition)
Outdoor EEPROM error
1. Outdoor unit power error (Voltage, noise, etc.)
2. Outdoor I/F P.C. board error
Is
there any trouble of
outdoor unit power
supply?
Check power voltage and line.
Correct power line.
Check external noise, etc.
Check I/F P.C. board.
No
No
* FT9 : 208/230 V
±
10%
FT6 : 460 V
±
10%
No
Yes
Yes
Yes
Yes
Yes
No
No
[H01]
V
U
W
Is
power voltage
of outdoor unit
normal?
Does voltage
drop occur when
other compressor
starts?
Is
winding
resistance between
phases of corresponding
compressor normal?
(Note 1)
Is not it an abnormal
overload?
Is
connection
of wiring or connection of
connector on A3-IPDU P.C.
board normal?
.
Correct power line.
Correct connector connection
or wiring.
Compressor error (Motor
burning, etc.)
Correct cause of overload.
Check IPDU P.C. board.
Compressor breakdown
Rotor-stop conduction has
occurred.
1. Outdoor unit power line error
2. Compressor circuit system error
3. Compressor error
4. Abnormal overload in operation
5. A3-IPDU P.C. board error
Sub-code:
01: Compressor 1,
02: Compressor 2,
03: Compressor 3
Take off lead wire of compressor.
1. Check resistance between windings:
It is normal if there are 0.1Ω to 0.4Ω.
2. Check insulation between outdoor cabinet and terminal:
It is normal if there are 20MΩ or more.
Note 1
After checking the output, when connecting the compressor
lead again to the compressor terminal, check surely there is
no distortion on the Fasten receptacle terminal.
If it is loosened, caulk it with pinchers, etc and then connect
lead to the terminal firmly.
Details of compressor
power connecting section
Check code
Cause
Check code name
Check code
Cause
Check code name
Check code
Cause
Check code name
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