P22 Outdoor Unit Fan Error - Panasonic 2WAY Multi Technical & Service Manual

P22 Outdoor Unit Fan Error

Error detection method
● An Outdoor Unit Fan Trouble is assumed when outdoor fan (fan motor) rpm and drive has exceeded the
following conditions 5 consecutive times in 1 hour.
• When outdoor fan (fan motor) revolution is not detected.
• When an overcurrent is detected in the outdoor fan circuit.
● When the power board has been incorrectly installed.
Troubleshooting
1
Is the power board correctly installed?
Power board 1-1
POW-GH850M2E
2
Any outdoor fan motor locking, broken wires, poor contact,
Outdoor fan
2-1 or short circuits? (Coil resistance should be around 2-6Ω for
motor
each phase.)
Is the fan motor connection position correct on the power
supply board?
2-2 Is FM1 connected to FM1, and FM2 to FM2?
(Confi rm that 3P black and 5P black connectors are paired
together.)
Replace power board and keep under observation.
2-3
If P22 reoccurs, replace outdoor fan motor.
● For work procedure for replacing outdoor main board, see "5. Reference Document".
● For board and Electrical Wiring Diagram, see Chapter 6.
• Outdoor main board: page VI-2
• Outdoor power board: page VI-3
• Converter board: VI-4
• Indoor control board for DC motor models: page VI-5
• Outdoor Unit Electrical Wiring Diagram: page VI-6 *Reference (Electrical Circuit Diagram A-B-2-3)
IV–101
Yes 2-1
Replace it with the
No
correct board.
Replace outdoor fan
Yes
motor
No 2-2
OK 2-3
NG Correct the connection