Haier 1U25MECFRA-3 Service Manual page 40

10.3.5 IPM protection
Outdoor display:
Method of IPM protection is detected by checking the compressor running condition and so on
Malfunction
Detection
Malfunction ■ The system leads to IPM protection due to over current
Decision ■ The compressor faulty leads to IPM protection
Conditions ■ circuit component of IPM is broken and led to IPM protection
Supposed ■ IPM protection dues to the compressor faulty
Causes ■ IPM protection dues to faulty PCB of IPM module
■ Compressor wiring disconnected
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector,
/ F01 LED1 flash 2 times
else parts damage may be occurred.
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Service diagnosis
Domestic air conditioner
or