GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL
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Troubleshooting:
Malfunction of ODU memory chip
error
Replace the outdoor
mainboard
3.4.10 “C4” ODU Jumper Cap Error
Error display:
ODU mainboard LED displayer
Error judgment condition and method:
If jumper cap model doesn‘t match with mainboard, report the error
Possible reason:
■Jumper cap is not installed.
■Jumper cap model is wrong.
■Detecting circuit is abnormal.
Troubleshooting
：
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