Carrier 619FB Service Manual page 32

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:
start
If the power wiring correct?
No
Check the connection wire
between reactor mainboard
and situation of connection
If there is short circuit or the
connection wire is loose?
No
Check the surface of reactor coil
If it is damaged?
No
Replace outdoor
mainboard AP1
End
Y
Correct the power wiring
Yes
Reconnect the wire or
replace the connection
Y
Yes
wire according to the
wiring diagram.
Y
Replace the reactor
Yes
Fig. 35 – Troubleshooting
Is the malfunction
eliminated?
N
No
Power on and
restart the unit
N
No
Power on and
Is the malfunction
restart the unit
eliminated?
N
No
32
Is the malfunction
eliminated?