GREE Duct type Ducted Type Split Air-Conditioner Units
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2) Malfunction of driven temperature sensor for compressor (dual-8 nixie tube of main control
board of ODU displays P7).
3) Overheating protection for driven IPM of compressor (dual-8 nixie tube of main control ).
4) Circuit malfunction of driven current detection for compressor (dual-8 nixie tube of main
control board of ODU displays PC).
5) Malfunction of driven charging loop for compressor (dual-8 nixie tube of main control board
of ODU displays PF).
6) Desynchronizing protection for inverter compressor (dual-8 nixie tube of main control
board of ODU displays P9).
7) Failure startup for inverter compressor (dual-8 nixie tube of main control board of ODU
displays PJ).
Troubleshooting:Find corresponding solution according to the error code displayed in the
mainboard of ODU.
(44) “P2” power voltage protection for the driven board of compressor
Error display: IDU wired controller displays .
Applicable model: all models.
Condition and method for fault judgement:View the error code via IDU wired controller, if the IDU
wired controller displays P2, then view the display of dual-8 nixie tube of main control board of ODU.
According to the error code of main control board can estimate the the specific error of driven board of
compressor, and then conduct troubleshooting by referring to specific troubleshooting methods.
Possible causes:
1) High voltage protection for driven DC bus bar of compressor (dual-8 nixie tube of main
control board of ODU displays PH).
2) Low voltage protection for driven DC bus bar of compressor (dual-8 nixie tube of main
control board of ODU displays PL).
Troubleshooting: Find corresponding solution according to the error code displayed in the
mainboard of ODU.
(45) “P3” reset protection for the driven module 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 P3, it means reset protection for the driven module
of compressor.
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