Output Over Current Detection - Daikin CTXS09GVJU Service Manual

SiUS12-814

5.24 Output Over Current Detection

L5
Remote
Controller
Display
Outdoor Unit LED A 5
Display
Method of
An output over-current is detected by checking the current that flows in the inverter DC section.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Service Diagnosis
1 1 2 1 3 4 4 1
A position signal error occurs while the compressor is running.
A speed error occurs while the compressor is running.
An output over-current input is fed from the output over-current detection circuit to the
microcomputer.
The system will shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Overcurrent due to defective power transistor
Overcurrent due to wrong internal wiring
Overcurrent due to abnormal supply voltage
Overcurrent due to defective PCB
Error detection due to defective PCB
Overcurrent due to closed stop valve
Overcurrent due to compressor failure
Overcurrent due to poor installation condition
Troubleshooting
149