– 176 –
[P05]
Ye s
Ye s
Ye s
Ye s
Ye s
* FT9 : 208/230 V ±10%
FT6 : 460 V ±10%
No
No
No
No
No
[P07]
Check code CauseCheck code name
Check code
Cause
Check code name
Phase error detected, power
failure detected, abnormal inverter
DC voltage (on compressor)
Phase error or power failure of the power supply to
the outdoor unit
Sub-code: 00: Phase error/power failure is detected. 01: Abnormal inverter DC voltage on Compressor 1,
02: Abnormal inverter DC voltage on Compressor 2, 03: Abnormal inverter DC voltage on Compressor 3
Sub-code:
01: Compressor 1,
02: Compressor 2,
03: Compressor 3
• Check the phase of the power line to the outdoor unit.
• Check error of outdoor I/F P.C. board.
• Check there are no loosened connectors, etc.
• Check connection wiring of MG-CTT.
• Check operation of MG-CTT.
Heat sink overheat error
1. Power voltage error
2. Outdoor fan system error
3. Heat sink installation error
4. Clogging of the cooling duct for the heat sink
5. A3-IPDU P.C. board error
Is power voltage
normal?*
Is wiring of A3-IPDU
normal?
Is indoor fan normal?
Are screws fixing
A3-IPDU and heat
sink loosened?
Is there no
clogging of heat
sink cooling
duct?
Correct power line.
Correct wiring to
compressor or connector
connection.
Check fan and fan motor.r.
Tighten screws.
Clear clogging.
Check A3-IPDU P.C.
board.
Ye s
Ye s
Ye s
Ye s
Ye s
No
No
No
No
No
* Check there is 208/230V voltage of 1-3 pin of CN68 on indoor P.C. board.
[P10]
Sub-code: Overflowing indoor unit's address
Check code CauseCheck code name
Is float SW
connector (Indoor
control P.C. board
CN34) connected
normally?
Does float SW
operate?
Is wiring normal?
Does drain pump
operate?
Is power supply to
drain pump normal?*
Correct connector connection.
Check and correct wiring.
Check indoor P.C. board.
Failure → Replace
Check indoor P.C. board.
Failure → Replace
Check drain pipe, etc. Replace drain pump, and check cabling.
Water overflow in an indoor unit
1. Float SW malfunction
2. Drain pump malfunction
3. Clogging of drain pipe
4. Indoor P.C. board error
To Next Page
Loading...
