Heiko 2P Series, Руководство по обслуживанию

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Service diagnosis
37
Domestic air conditioner
10.3.5 IPM protection
Outdoor display: LED1 flash 2 times
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, or else
parts damage may be occurred.
NO
●
YES
NO
YES