GREE DC INVERTER HEAT PUMP CONDENSING UNIT
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■Drive board current sampling circuit element is damaged or drive chip current sampling AD terminal is
abnormal.
■Compressor is damaged.
Troubleshooting
：
3.4.17 “P6” Master Control and Driver Communication Error
Error display:
ODU mainboard LED displayer
Error judgment condition and method:
If there is no other malfunction and the communication between master control and driver is cut off for 30s,
then it can be judged that the communication between master control and driver is faulted. System will shut down
for protection.
Possible reason:
■Communication wire between master control and driver is not well connected, or has bad contact, or is broken.
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