Gree GWC30LB-D3DNA3G Service Manual page 58

Service Manual
(7)Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor
unit)
Mainly detect:
Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken
Fault diagnosis process:
Start
Check wiring of the
reactor (L) of the
outdoor unit and the
PFC capacitor
Whether there is any
damage or
short-circuit?
Disconnect the terminals for the
reactor and measure the resistance
between the two terminals of the
reactor by an ohm gauge
Whether there is any damage
or short-circuit?
Replace the control
panel AP1
End
Installation and Maintenance
Y
N
Replace the reactor
Y
N
Replace it as per the
wiring diagram and
reconnect the wires
N
Restart the unit
N
If the fault is eliminated?
If the fault is eliminated? Y
Y
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