Panasonic S-160PE1R5B Technical Data & Service Manual page 192

4. Mini VRF System Alarm Codes
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-FM_UP" and "CN-FM_LO" firmly
1-1
connected to the outdoor control PC board (lock engaged)?
Disconnect the connectors "CN-FM_UP" and "CN-FM_LO" from
the outdoor control PC board and rotate the outdoor fan by
2-1
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? Can you see or hear anything 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.
5-28
Mini VRF SYSTEM
Trouble Diagnosis
Yes 2-1
Correct the connector
No
connections.
Yes 3-1
Replace the outdoor
No
fan motor.
Yes 3-2
No 3-3