Service diagnosis
36
Domestic air conditioner
Ŷ
IPM protection dues to the compressor faulty
Ŷ
IPM protection dues to faulty PCB of IPM module
Ŷ Compressor wiring disconnected
* Caution
Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
10.4.6 Over-current of the compressor
Outdoor Display F22/F2/F23
˖
LED1 flash 3 or 24 or 25 times
The current of the compressor is too high
when the IPM Module is damaged
or the compressor is damaged.
power supply voltage is too low or too high
Turn on the unit.
whether the error is displayed before
compressor start?
The power module is fault,
need replaced
1ǃThe system may have been over or under charged with gas, which can be judged through the pressure of the
measuring system.
2ǃThe shaft of compressor is seized and the compressor needs replacing.
<(6
12
The compressor is started normally, but
malfunctions are reported after it has run for a
while.
Troubleshooti
ng
Supposed
Causes
Method of
Malfunction
Malfunction
Detection
Conditions
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