Power Factor Correct Or (Pfc) Fault - Gree GWC09QB-K3DNB2B Service Manual

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 wiring of the
reactor (L) of the
outdoor unit and the
PFC capacitor
Whether there is any
damage or
short-circuit?
Remove the PFC capacitor
and measure resistance
between the two terminals.
Is the resistance around zero?
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
Installation and Maintenance
Start
Y
N
The capacitor is
short circuited and
Y
the capacitor
should be repla-
ced
N
Replace the reactor
Y
N
End
Replace it as per the
wiring diagram and
reconnect the wires
N
Restart the unit
N
Restart the unit
N
If the fault is eliminated?
If the fault is eliminated?
If the fault is eliminated?
Y
Y
Y
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