Compressor Lock - Daikin Super multi NX E Series Service Manual

Troubleshooting for Outdoor Unit
7.8

Compressor Lock

E6
Error Code
Outdoor Unit LED
A
∗ LED5 is equipped only on the 5-room model.
Display
Method of Error
A compressor lock is detected by checking the compressor running condition through the
Detection position detection circuit.
Error Decision
Conditions
Supposed
Causes
Troubleshooting
Check No.15
Refer to P.236
211
j h i i h
1 2 3 4
Judging from the current waveform generated when high-frequency voltage is applied to the
compressor.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Defective outdoor unit PCB
Defective compressor
Defective outdoor electronic expansion valve
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
(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 No.15
Check with the inverter analyzer.
Normal?
YES
Turn off the power and reconnect
the harnesses. Turn on the power
again and restart the system.
Emergency
stop without compressor
running?
NO
System shut
down after errors repeated
several times?
YES
h
5
∗ Inverter analyzer:
RSUK0917C
NO
YES
NO
SiBE121135_A
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
Check the outdoor electronic
expansion valve coil.
Replace it as required.
Replace the compressor.
(R18317)
Service Diagnosis