Daikin FTXB50C - Page 61

Service Diagnosis
53
H6 (RXN25/35M/N, RXK25/35A)
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?
Electricals or
compressor harnesses
connected as
specified?
No
Yes
Check for short circuit.
Check with inverter checker (*).
Check the electrolytic capacitor
voltage.
Turn off the power. Disconnect
the harness U, V and W.
Replace the outdoor unit
PCB, outdoor unit fan.
DC320 ± 30 V?
No
Yes
No
Any LED off?
Yes
Correct the power supply or
replace the outdoor unit PCB.
No
Reconnect as specified.
* Inverter checker
Part No.: 1225477
Replace the outdoor unit PCB.
Replace the compressor.