Haier D Series Service Manual page 38

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