17.4.23 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 conector connection:
- Turn OFF the power
- Check the U, V and W conector connection
at outdoor PCB and compressor terminal.
Is the connector connection normal?
Disconnect the harnesses U, V and W from
the compressor terminal
From thw 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
Caution
before remove and connect the component.
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107
Connector poor contact
Correct the connection
IPM defective
Replace outdoor unit PCB
Replace compressor