P22 Outdoor Unit Fan Motor Trouble - Panasonic R410A Service Manual

P22 Outdoor unit fan motor trouble

1. Error Detection Method
• It is judged an error when the outdoor fan motor's rotating signal cannot be detected normally.
2. Error Diagnosis
1 Wiring
2 Outdoor
fan motor
3 Outdoor
control
PC board
5
Are the connectors "CN-FMA", "CN-FMB", "CN-FM1", and
1-1 "CN-FM2" firmly connected to the outdoor control PC board
(lock engaged)?
Disconnect the connectors "CN-FMA", "CN-FMB", "CN-FM1",
and "CN-FM2" from the outdoor control PC board and rotate
2-1
the outdoor fan by hand; does it rotate freely?
(Check the outdoor fan motor lock)
Turn the power on and run the unit again; is P22 triggered
3-1 again? Or can you see or hear anything that is obviously
wrong in its rotation?
Replace the outdoor control PC board. (If it fails to operate normally even after replacing
3-2
the outdoor control PC board, replace the outdoor fan motor.)
3-3 If there is nothing particularly out of the ordinary, see what happens.
5-54
Yes 2-1
Correct the connector
No
connections
Yes 3-1
Replace the outdoor
No
fan motor
Yes 3-2
No 3-3