Compressor Lock - Daikin FTXN09KEVJU Service Manual

SiUS041111

4.10 Compressor Lock

E6
Remote
Controller
Display
Method of
A compressor lock is detected by the current waveform generated when applying high-frequency
Malfunction voltage to the motor.
Detection
 If the error repeats, the system is shut down
Malfunction
 Reset condition: Continuous run for about 11 minutes without any other error
Decision
Conditions
 Compressor locked
Supposed
 Disconnection of compressor harness
Causes
Troubleshooting
Check No.15
Refer to P.120
Service Diagnosis
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 checker (∗).
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 checker
Part No.: 1225477
NO
YES
NO
Troubleshooting
Correct the power supply
or replace the outdoor unit
PCB.
Replace the compressor.
Check the electronic
expansion valve.
Replace it as required.
Replace the compressor.
(R14439)
91