Gree UM600PH/A-M, Service Manual

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GREE Duct type Ducted Type Split Air-Conditioner Units
107
3) Compresso is damaged.
4) The system is blocked.
5) IPM module of compressor driven board is damaged.
(48) “P7” malfunction of driven temperature sensor for compressor
Error display: ODU mainboard displays .
Applicable model: all models.
Condition and method for fault judgement: View the error code displayed in dual-8 nixie tube of
main control board of ODU, if the nixie tube displays P7, it means malfunction of driven temperature
sensor of compressor.
Possible cause:
1) Driven board of compressor is faulted.
Troubleshooting:
“P7” malfunction of driven
tempberature sensor of compressor
Try to cut off the
power for 3 times, and then
re-energize the unit
Compressor driven
board is faulted
No
Replace the compressor
driven board
Yes
(49) “P8” overheating protection for driven IPM of compressor
Error display: ODU mainboard displays .
Applicable model:
all models.
Condition and method for fault judgement: View the error code displayed in dual-8 nixie tube of
main control board of ODU, if the nixie tube displays P8, it means overheating protection for driven IPM
of compressor.
Possible cause:
1) Screws for IPM module has not been firmly fixed.
2) No radiating paste in the IPM module, uneven application of radiating paste or the radiating
paste is dry.
3) The driven board od compressor is faulted.