Gree GVH24AK-K3DNC8A Service Manual page 57

2. IPM Protection, Desynchronizing Malfunction, Phase Current of Compressor is Overcurrent (Outdoor unit
malfunction)
Outdoor unit malfunction indicator status
Malfunction
IPM protection
Desynchronizing malfunction
Compressor overcurrent
Main detection point:
●If control board AP1 and compressor COMP is well connected? If they are loosened? If the connection sequence is correct?
●Is voltage input in the normal range (Test the voltage between L, N of wiring board XT by DC voltage meter)?
●If coil resistance of compressor is normal? Is compressor coil insulating to copper pipe well?
●If the work load of unit is heavy? If radiating of unit is well? If the refrigerant charging is appropriate?
Malfunction diagnosis process:
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D5 D6 D16 D30
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Service Manual
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