“E6” Compressor Lock - Daikin Altherma EKHBH Series Service Manual

ESIE06-03
"E6" Compressor Lock
3.4
E6
Error code
Method of A compressor lock is detected by checking the compressor running condition through the position
malfunction detection circuit.
detection
Malfunction
decision conditions
Supposed causes
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Part 3 – Troubleshooting
Judging from current waveform generated when high-frequency voltage is applied to the
compressor.
The system will be shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Compressor locked
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
Error Codes: Outdoor Units
∗ 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.
3–15
1
3 3
4
5