Position Sensor Abnormality - Daikin FTXN25KEV1B Service Manual

Troubleshooting

4.16 Position Sensor Abnormality

H6
Remote
Controller
Display
Method of A compressor start-up failure is detected by checking the compressor running condition through
Malfunction the position detection circuit.
Detection
Malfunction
Decision
Conditions
Supposed
Causes
72
The compressor fails to start in about 15 seconds after the compressor run command signal
is sent.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 11 minutes without any other error
Disconnection of compressor relay harness
Defective compressor
Defective outdoor unit PCB
Start-up failure caused by the closed stop valve
Input voltage is outside the specified range
SiBE041102_A
Service Diagnosis