Si10-417
Troubleshooting
Service Diagnosis
47
5.2.9 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 position detection circuit detects a compressor
frequency of below 5 Hz for several tens of seconds.
The system will be shut down if the error occurs 16
times.
Clearing condition: Continuous run for about 5
minutes (normal)
Supposed
Causes
Compressor locked
Trouble
shooting
Note:
If the model doesn't have SPM, replace the outdoor unit
PCB.
Caution
Turn off the power. Disconnect
the harnesses U, V and W.
System
shut down after errors
repeated several
times?
Normal?
Emergency stop
without compressor
running?
Check with the inverter
checker (
∗
).
Turn off the power and reconnect
the harnesses. Turn on the power
again and get the system restarted.
∗
Inverter checker
Part No.: 1225477
Correct the power
supply or replace the
SPM.
(Replace the outdoor
unit PCB.)
Replace the
compressor.
Check the electronic
expansion valve.
Replace it as required.
Replace the compressor.
(R2842)
NO
YES
YES
NO
NO
YES
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Si10-417.fm Page 47 Wednesday, September 22, 2004 6:38 PM
