Mitsubishi Electric Mr.Slim PUHZ-SHW230YKA2, Руководство по обслуживанию

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OCH594B
Notes
· High voltage is applied to the connector (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 circuit board and fan motor.)
Self check
Symptom : The outdoor fan cannot rotate.
Check method of DC fan motor (fan motor/outdoor controller circuit board)
Fail
Fail
Wiring contact check
Contact of fan motor connector (CNF1, 2)
Fuse check
Check the fuse (F5) on outdoor
controller board.
Power supply check (Remove the connector (CNF1, 2))
Measure the voltage in the outdoor controller circuit
board.
TEST POINT
1
: V
DC
(between 1 (+) and 4 ( − ) of the fan connector): V
DC
250–330 V DC
TEST POINT
2
: V
CC
(between 5 (+) and 4 ( − ) of the fan connector): V
CC
15 V DC
Correct the wiring.
Replace the outdoor controller board.
Replace the defective fan motor.
Replace outdoor controller board
(C.B) and the defective fan motor (MF1, 2).
Replace the outdoor
controller board.
Replace the defective fan motor.
Is the voltage normal?
Is there contact failure?
Yes
No
Did the fuse blow?
No
Yes
Check the operation of fan. Complete.
Complete.
Yes OK
Check the operation.
OK
Yes
No