Position Sensor Abnormality - Daikin CTXU25G2V1B Service Manual

Troubleshooting

2.25 Position Sensor Abnormality

H6
Remote
Controller Display
Method of Startup failure of the compressor is identified by rpm information of the compressor and by
electric component position detector.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
143
When the compressor does not run for 15 seconds after receiving operation start command
The unit shuts down if the fault occurs 16 times
Clear condition: The compressor continuously runs for 11 minutes without fault
Detection error due to disconnection of compressor harness
Startup failure due to defective compressor
Startup failure due to defective outdoor unit PCB
Startup failure due to closed stop valve
Input voltage fault
SiBE12-908
Service Diagnosis