GREE U-Match 5 SERIES UNIT SERVICE MANUAL
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Troubleshooting：
3.4.29 “P7” Driver Module Sensor Error
Error display: ODU mainboard, IDU wired controller and IDU receiver light board will display P7
Error judgment condition and method:
If IPM or PFC module temperature is lower than the set protection value, then it can be judged that driver
module sensor error occurs and system will shut down for protection.
Possible reason:
■Module temperature sensor is short-circuited or broken-circuited.
■Drive board current sampling circuit element is damaged or drive chip current sampling AD terminal is
abnormal.
Troubleshooting：
P7 Driver module sensor error
Replace the drive board
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