Daikin FTXN50L - H6: Position Sensor Abnormal (Compressor)

Service Diagnosis
52
H6 (ARXN/RXN50/60L, RXB50/60A)
Description
POSITION SENSOR ABNORMAL (COMPRESSOR)
Possible Root
cause
1. Compressor relay cable disconnected.
2. Compressor itself defective.
3. Outdoor PCB defective.
4. Stop valve closed.
5. Inputvoltageoutofspecication.
Troubleshooting
Normal?
Compressor
harness connected
as specified?
No
Yes
Check for short circuit.
Check with inverter checker.
Check the electrolytic capacitor
voltage.
Yes
Turn off the power. Disconnect
the harness U, V and W.
Replace the outdoor unit
PCB, outdoor unit fan.
No
Reconnect as specified.
Any LED off?
Correct power supply or
replace outdoor PCB.
Replace compressor.
Yes
No