GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL
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3.4.30 “UL” Outdoor fan overcurrent protection
Error display:
ODU mainboard LED displayer
Error judgment condition and method:
If outdoor fan’s instant current value is higher than the set current protection value, then it can be judged that
outdoor fan over-current occurs and system will shut down for protection.
Possible reason:
■System load is too much and outdoor fan current is too large.
■Outdoor fan 3-phase wire connection is lack of phase or phase-reversed.
■Outdoor fan phase wire is loose or has bad contact.
■Drive board current sampling circuit element is damaged or drive chip current sampling AD terminal is
abnormal.
■Outdoor fan is damaged.
Troubleshooting
：
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