Compressor Lock - Daikin FTXS09HVJU Service Manual

Troubleshooting
4.8

Compressor Lock

4.8.1 09/12 Class
E6
Remote
Controller
Display
A compressor lock is detected by checking the compressor running condition through the position
Method of
detection circuit.
Malfunction
Detection
 The system judges the compressor lock, and stops due to overcurrent.
Malfunction
 The system judges the compressor lock, and cannot operation with position detection within 15
Decision
Conditions
 The system is shut down if the error occurs 16 times.
 Clearing condition: Continuous run for about 10 minutes (normal)
 Compressor locked
Supposed
 Compressor harness disconnected
Causes
Troubleshooting
Service Diagnosis
seconds after start up.
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts damage may occur.
(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
SiUS04-904
* Inverter checker
Part No.: 1225477
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
Check the electronic
expansion valve.
Replace it as required.
Replace the compressor.
(R8065)
109