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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.
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.
YES
YES
NO
NO
Connector poor contact.
Correct the connection.
IPM defective.
Replace compressor.
Replace outdoor unit PCB.
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.
Is the blinking of the 6 LEDs in same sequence/condition?
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.
Caution
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