GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL
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■Poor contact between pressure sensor and terminal in mainboard interface.
■Pressure sensor is abnormal.
■Detecting circuit is abnormal.
Troubleshooting
：
3.4.9 “EE” Memory chip reading and writing failure
Error display:
ODU mainboard LED displayer
Error judgment condition and method:
If ODU mainboard cannot read the memory chip, this error will be reported.
Possible reason:
■Memory chip on the ODU mainboard is damaged.
■Memory chip is weakly welded.
■Memory chip lead is short-circuited.
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