Panasonic WH-SXC09H3E8 Service Manual page 192

16.5.28 Compressor Rotation Failure (F14)
Malfunction Decision Conditions:
A compressor rotation failure is detected by checking the compressor running condition through the position
detection circuit.
Malfunction Caused:
1 Compressor terminal disconnect.
2 Faulty outdoor unit PCB (main).
3 Faulty compressor.
Abnormality Judgment:
Continue 4 times in 20 minutes.
Troubleshooting:
Check the U, V, and W connector connection:
- Turn OFF the power
- Check the U, V, and W connector connection at
outdoor unit PCB (main) and compressor terminal
Is the connector connection
normal?
Disconnect the harnesses U, V, and
W from the compressor terminal.
From the disconnected harnesses U, Y, and
W, connect them to the inverter checker. Turn
ON the power and operate the system. Check
the inverter checker 6 LEDs blinking condition.
Is the blinking of the 6 LEDs in
same sequence/condition?
No
- Connector poor contact
- Correct the connection
Yes
- IPM defective
No
- Replace the outdoor unit PCB
(main)
Yes
Replace the compressor.
For safety reason and to prevent component breakdown,
always switch off the power before remove and connect the component.
Outdoor unit
PCB (main)
192
Compressor
terminal
Inverter Inverter
checker checker