Service diagnosis
36 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
D
ecision
■ The compressor faulty leads to IPM protection
Conditio
ns
■ circuit component of IPM is broken and led to IPM protection
S
upposed
■
●
IPM protection dues to the compressor faulty
Causes
■ IPM protection dues to faulty PCB of IPM module
■ Comp
ressor 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
To Next Page
Loading...
