Check Method Of Fan Motor - Mitsubishi PUMY-P60NKMU Technical & Service Manual

Check method of fan motor (fan motor/outdoor controller board)
1
Notes
· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service.
· Do not pull out the connector (CNF1, 2) for the motor with the power supply on.
(It causes trouble of the outdoor controller
2
Self check
Symptom : The outdoor fan does not rotate.
Fuse check
Check the fuse (F500) on outdoor
controller board.
Did the fuse blow?
No
Wiring contact check
Contact of fan motor connector (CNF1, 2)
Is there contact failure?
No
Power supply check (Remove the connector (CNF1, 2))
Measure the voltage in the outdoor controller
1 : V
TEST POINT
(between 1 (+) and 4 (-) of the fan connector): V
DC
2 : V
TEST POINT
(between 5 (+) and 4 (-) of the fan connector): V
CC
Is the voltage normal?
No
Replace outdoor
controller board.
Check the operation.
NG
Replace the fan motor.
OCH502C
board and fan motor.)
Replace outdoor controller board (MULTI.B.) (C.B)
Yes
and fan motor (MF1, 2).
Recover wiring.
Yes
board.
Replace the fan motor.
Yes
Check the operation of fan.
Replace outdoor controller board.
OK
END
87
DC265-360V
DC
DC15V
CC
Yes OK
NG
END