Compressor Lock - Daikin FVXS25FV1B Service Manual

SiBE06-708
4.10

Compressor Lock

E6
Remote
Controller
Display
Method of A compressor lock is detected by checking the compressor running condition through the
position detection circuit.
Malfunction
Detection
Malfunction 25/35 class
Decision
Conditions
50 class
Supposed
Causes
Troubleshooting
Note: If the model doesn't have PM1, replace the outdoor unit PCB.
Service Diagnosis
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.
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
Troubleshooting
∗ 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.
(R5212)
99