Compressor Lock - Daikin FTX50GV1B Service Manual

SiBE041029EB

4.13 Compressor Lock

E6
Error Code
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.15
Refer to P.96
Service Diagnosis
A compressor lock is detected by the current waveform generated when applying high-
frequency voltage to the motor.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Compressor locked
Compressor harness disconnected
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
∗ Inverter analyzer:
RSUK0917C
NO
YES
NO
Troubleshooting
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)
72