44
E6
Description
COMPRESSOR LOCK/START-UP ABNORMALITY
Possible Root
cause
1. Compressor locked.
2. Compressor harness disconnect.
Troubleshooting
Check with Inverter analyzer.
Normal?
No
Yes
Correct power supply or
replace outdoor unit PCB.
Check outdoor electronic
expansion valve coil.
Replace it as required.
Emergency stop
without compressor
running?
No
Yes
Replace the compressor.
Yes
Replace the compressor.
System shut down
after errors repeated
several times?
No
Turn off power.
Disconnect harnesses U, V and
W.
Turn off power and reconnect
harnesses. Turn on power again
and restart system.
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