Compressor Lock - Daikin CTXS07LVJU Service Manual

SiUS121602E
7.8

Compressor Lock

E6
Error Code
Outdoor Unit LED A
Display
Method of Error A compressor lock is detected by checking the compressor running condition through the position
detection circuit.
Detection
Error Decision
Conditions
Supposed
Causes
Troubleshooting
Check No.12
Refer to P.167
Check No.15
Refer to P.169
Service Diagnosis
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
Closed stop valve
Defective outdoor unit PCB
Defective compressor
Defective 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.
Stop valve closed?
NO
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No.15
Check with the inverter analyzer.
Any LED off?
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
YES
∗ Inverter analyzer:
RSUK0917C
NO
YES
NO
Troubleshooting for Outdoor Unit
Open the stop valve.
Correct the power supply or
replace the outdoor unit
PCB (main PCB).
Replace the compressor.
Check the electronic
expansion valve coil.
Go to Check No. 12.
Replace the compressor.
(R21067)
145