Panasonic CS-XE9SKUA Service Manual page 76

15.4.22 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

Faulty Outdoor PCB

Faulty compressor
Troubleshooting
When F93 indication happens.
Check the U, V and W connector connection:
- Turn OFF the power.
- Check the U, V and W connector connection at outdoor
PCB and compressor terminal.
Is the connector connection normal?
Disconnect the harnesses U, V and W from the
compressor terminal.
From the disconnected harnesses U, V 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?
YES
YES
For safety reason and to prevent component
breakdown, always switch off the power
Caution
before remove and connect the component.
Connector poor contact.
NO
Correct the connection.
NO IPM defective.
Replace outdoor unit PCB.
Replace compressor.
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