Compressor Lock - Daikin FTKS20D3VMW Service Manual

SiENBE12-713

5.13 Compressor Lock

E6
Remote Control
Display
Outdoor Unit LED
A
Display
Method of A compressor lock is detected by checking the compressor running condition through the
Malfunction position detection circuit.
Detection
" Judging from current waveform generated when high-frequency voltage is applied to the
Malfunction
Decision
" The system will be shut down if the error occurs 16 times.
Conditions
" Clearing condition: Continuous run for about 5 minutes (normal)
" Compressor locked
Supposed
Causes
Troubleshooting
Service Diagnosis
5 1 1 2 4 3 4 4
compressor.
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
1
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.
(R5143)
251