Troubleshooting SiBE04-809
90 Service Diagnosis
4.12 Compressor Lock
Remote
Controller
Display
E6
Method of
Malfunction
Detection
A compressor lock is detected by checking the compressor running condition through the
position detection circuit.
Malfunction
Decision
Conditions
The system judges the compressor lock, and stops due to over current.
The system judges the compressor lock, and cannot operation with position detection within
15 seconds after start up.
The system will be shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 10 minutes (normal)
Supposed
Causes
Compressor locked
Compressor harness disconnected
Troubleshooting
Turn off the power. Disconnect the
harnesses U, V and W.
(R8065)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
YES
YES
NO
NO
YES
Check with the inverter checker (∗).
Turn off the power and reconnect
the harnesses. Turn on the power
again and get the system restarted.
(Precaution before turning on the power again)
Make sure the power has been off for at least 30 seconds.
Correct the power supply or
replace the PM1.
(Replace the outdoor unit
PCB.)
∗ Inverter checker
Part No.: 1225477
Replace the compressor.
Replace it as required.
Replace the compressor.
Check the electronic
expansion valve.
Normal?
Emergency
stop without compressor
running?
System shut
down after errors repeated
several times?
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