Carrier 40GRQB18H-3 - PFC (Correction for Power Factor) Malfunction (Outdoor Unit)

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6. PFC (correction for power factor) malfunction (outdoor unit malfunction)
Main detection points:
S Check if wire is connected properly and if there are any
breaks.
S Check of the reactor of the outdoor unit is damaged?
Malfunction diagnosis process:
Y
Y
N
N
Y
N
start
If the power wiring correct?
Correct the power wiring
Check the connection wire
between reactor mainboard
and situation of connection
If there is short circuit or the
connection wire is loose?
Reconnect the wire or
replace the connection
wire according to the
wiring diagram.
Check the surface of reactor coil
If it is damaged?
Replace the reactor
Power on and
restart the unit
Power on and
restart the unit
Replace outdoor
mainboard AP1
End
Is the malfunction
eliminated?
Is the malfunction
eliminated?
Is the malfunction
eliminated?
No
No
No
No
No
No
Yes
Yes
Yes
Fig. 35 – Troubleshooting