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SiBE12-908
Troubleshooting
Service Diagnosis
134
2.18 Compressor Lock
Remote
Controller Display
E6
Method of
Malfunction
Detection
Judging from current waveform generated when high-frequency voltage is applied to the
compressor.
Malfunction
Decision
Conditions
The system is shut down when the fault count reaches 16 times.
Clear condition: Continuous operation for 11 minutes (without fault)
Supposed
Causes
Compressor lock
Disconnection of compressor harness
Troubleshooting
Check No.14
Refer to P.173
(R9439)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is it OK?
Rectify the power supply or
replace the outdoor unit PCB.
NO
YES
Check the inverter by the
inverter checker*
Check No. 02
Turn off the power supply, and
disconnect U, V, and W
harnesses
Turn off the power supply, replace
the harnesses, and restart the
compressor after turning on the
power supply again.
Does the compressor
stop without running?
NO
YES
Does the unit shut
down after
repeating stop of
compressor
several times?
YES
NO
* Inverter checker
Part No.: 1225477
Replace the compressor.
Check the electronic
expansion valve.
Replace the electronic
expansion valve.
Replace the compressor.