GREE U-Match 6 SERIES UNIT SERVICE MANUAL
65
Possible reason:
■IDU is installed improperly
■Drainage pump is broken
■Float switch operates abnormally
■IDU mainboard is abnormal;
Troubleshooting:
3.4.9 “C6” Discharge Temperature Sensor Error
Error display:
ODU mainboard, IDU wired controller and IDU receiver light board will display C6
Error judgment condition and method:
①
Sample the AD value of temperature sensor through temperature sensor detecting circuit and
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