Si10-417
Troubleshooting
Service Diagnosis
45
5.2.8 Compressor Lock
Remote
Controller
Display
E6
Outdoor
Unit LED
Display
A
5
1
1
2
4
3
4
4
1
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 10 Hz for 20 seconds or a
frequency of above 160 Hz.
40 seconds after the compressor has started, the
position detection circuit detects a compressor
frequency of above 180 Hz.
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
Caution
Turn off the power. Disconnect
the harnesses U, V and W.
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.
NO
YES
NO
YES
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
A
Si10-417.fm Page 45 Wednesday, September 22, 2004 6:38 PM
