SiBE12-816_D Troubleshooting for Outdoor Unit
Service Diagnosis 238
7.3 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
îš„
Judging from the current waveform generated when high-frequency voltage is applied to the
compressor.
îš„
If the error repeats 16 times, the system is shut down.
îš„
Reset condition: Continuous run for about 11 minutes without any other error
Supposed
Causes
îš„
Compressor locked
Troubleshooting
Check No.15
Refer to P.266
Turn off the power. Disconnect the
harnesses U, V, and W.
(R14409)
Caution
NO
YES
YES
NO
NO
YES
Check No. 15
Check with the inverter checker (∗).
Turn off the power and reconnect
the harnesses. Turn on the power
again and restart the system.
(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 the compressor.
Check the electronic
expansion valve.
Replace it as required.
Normal?
Emergency
stop without compressor
running?
System shut
down after errors repeated
several times?
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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