Compressor Lock - Daikin ATXS35EV1B7 Service Manual

Troubleshooting
4.10

Compressor Lock

E6
Remote
Controller
Display
Method of A compressor lock is detected by checking the compressor running condition through the
Malfunction position detection circuit.
Detection
Malfunction 25/35 class
Decision
Conditions
50 class
Supposed
Causes
Troubleshooting
94
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)
Judging from current waveform generated when applying high-frequency voltage to the
motor.
The system will be shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Compressor locked
Compressor harness disconnected
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
(Precaution before turning on the power again)
Make sure the power has been off for at least 30 seconds.
Turn off the power. Disconnect the
harnesses U, V and W.
Check with the inverter checker (∗).
Normal?
YES
Turn off the power and reconnect
the harnesses. Turn on the power
again and get the system restarted.
Emergency
stop without compressor
running?
NO
System shut
down after errors repeated
several times?
YES
NO
YES
NO
SiBE04-824
∗ Inverter checker
Part No.: 1225477
Correct the power supply or
replace the PM1.
(Replace the outdoor unit
PCB.)
Replace the compressor.
Check the electronic
expansion valve.
Replace it as required.
Replace the compressor.
(R8357)
Service Diagnosis