MULTI TYPE

Check code Check code name
Cause
[H01] / [1F]
(AI-NET)
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
Is power voltage
of outdoor unit
normal?
No
* 380-415V ± 10%
Correct power line.
Yes
Does voltage
drop occur when
other compressor
starts?
Yes
No
Is connection
of wiring or connection of
connector on A3-IPDU P.C.
board normal?
No
Correct connector connection
or wiring.
Yes
Is winding
resistance between
phases of corresponding
compressor normal?
(Note 1)
Yes
No
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 10MΩ or more.
Compressor error (Motor
burning, etc.)
Is not it an abnormal
overload?
Yes
Correct cause of overload.
No
Check IPDU P.C. board.
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.
V
W
U
Details of compressor
power connecting section
Check code Check code name
Cause
[F29] / [12]
(AI-NET)
Indoor other error Indoor P.C. board error
This error is detected during operation of air conditioner of IC10 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.
(Approx. 3 minutes) (Approx. 1 minute)
(Power ON)
[SET DATA]
is displayed
on remote
controller.
[SET DATA]
disappears.
(Repetition)
LED (D02) 1Hz
flashes for approx.
10 seconds on
indoor unit P.C.
board.
Reboot (Reset)
Check code Check code name
Cause
[F31] / [1C]
(AI-NET)
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?
No
Check power voltage and line.
Correct power line.
Check external noise, etc.
Yes
Check I/F P.C. board.
204