GREE DC INVERTER HEAT PUMP CONDENSING UNIT
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Troubleshooting
：
P7 Driver module sensor error
Replace the drive board
3.4.19 “P8” Driver Module High Temperature Protection
Error display:
ODU mainboard LED displayer
Error judgment condition and method:
If IPM module temperature or PFC module temperature exceeds the set protection value, then it can be
judged that driver module temperature is too high and system will shut down for protection.
Possible reason:
■Thermal grease is not applied or not evenly applied to the module, or there is other substance on the back of the
module.
■The module securing screws are not tightened up.
■Drive board temperature sampling circuit element is damaged or drive chip temperature sampling AD terminal is
abnormal.
Troubleshooting
：
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