Panasonic CS-PS9JKT Service Manual page 61

14.4.18 F93 (Compressor Rotation Failure)
Malfunction Decision Conditions
A compressor rotation failure is detected by checking the compressor running condition through the position
detection circuit.
Malfunction Caused
•
Compressor terminal disconnect
•
Outdoor PCB malfunction
Troubleshooting
When F93 indication happens
Turn off power supply. Disconnect U, V
and W wires
Check with inverter checker.
Normal?
NO
YES
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.
•
IPM defective
•
Replace outdoor unit PCB
•
Replace compressor
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