Panasonic CS-E9RKUAW Service Manual page 101

18.4.24 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,
correct 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
YES
NO
YES
For safety reason and to prevent
component breakdown, always
switch off the power before remove
and connect the component.
Connector poor contact.
Correct the connection.
IPM defective.
Replace outdoor unit PCB.
Replace compressor.
101