Mitsubishi Electric PUHZ-FRP71VHA2R1, Руководство по обслуживанию

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46
OCH665B
Yes
Yes
No
No
No
OK
Yes
Fail
Yes
OK
Fail
Check method of DC fan motor (fan motor/indoor controller circuit board)
1
Notes
· High voltage is applied to the connector (CNF1) for the fan motor. Pay attention to the service.
· Do not pull out the connector (CNF1) for the motor with the power supply on.
(It causes trouble of the indoor controller circuit board and fan motor.)
2
Self check
Symptom: The outdoor fan cannot turn around.
Did the fuse blow?
Is there contact failure?
Is the voltage normal?
Fuse check
Check the fuse (F5) on outdoor
controller board.
P ower supply check (Remove the connector (CNF1))
1 Turn off the breaker and turn on the SW6-3.
2
Disconnect the connector (CNF1).
3 Turn on the breaker to start test run.
4
Measure the voltage in the outdoor controller circuit board.
TEST POINT
1
: V
DC
(between 1 (+) and 4 (−) of the fan connector): V
DC
250–380 V DC
TEST POINT 2 : V
CC
(between 5 (+) and 4 (−) of the fan connector): V
CC
15 V DC
TEST POINT
3
: V
SP
(between 6 (+) and 4 (−) of the fan connector): V
SP
6.5 V DC
5
Turn off the breaker and turn off the SW6-3.
Wiring contact check
Contact of fan motor connector (CNF1)
Replace outdoor controller board (C.B)
and fan motor (MF1).
Correct the wiring.
Replace the outdoor
controller board.
Replace the outdoor
controller board.
Check the operation of fan.
Check the operation.
Complete.
Complete.
Replace the defective fan motor.
Replace the defective fan motor.