![background image](http://html.mh-extra.com/html/daikin/2amx40g2v1b/2amx40g2v1b_service-manual_501057213.webp)
SiBE12-933_A
Troubleshooting
Service Diagnosis
203
4.20 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 is shut down if the error occurs 8 times.
Clearing condition: Continuous run for about 11 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