Daikin FTXS09DVJU Service Manual page 145

Troubleshooting
4.8.2 15/18/24 Class
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
Decision
Conditions
Supposed
Causes
Troubleshooting
134
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)
Compressor locked
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
SiUS04-702
∗ 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)
Service Diagnosis