Daikin FTXS30HVJU - Output Overcurrent Detection

Troubleshooting SiUS04-924
100 Service Diagnosis
4.22 Output Overcurrent Detection
Remote
Controller
Display
L5
Method of
Malfunction
Detection
An output overcurrent is detected by checking the current that flows in the inverter DC section.
Malfunction
Decision
Conditions
 A position signal error occurs while the compressor is running.
 A speed error occurs while the compressor is running.
 An output overcurrent input is fed from the output overcurrent detection circuit to the
microcomputer.
 The system will be shut down if the error occurs 16 times.
 Clearing condition: Continuous run for about 5 minutes (normal)
Supposed
Causes
 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
 Overcurrent due to outdoor unit fan lock