Output Over Current Detection - Daikin FVXS25FV1B Service Manual

SiBE06-708
4.23

Output Over Current Detection

L5
Remote
Controller
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
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 be shut down if the error occurs 255 times (25/35 class) or 16 times (50
class).
Clearing condition: Continuous run for about 10 minutes (25/35 class) or 5 minutes (50
class) (normal)
Over-current due to defective power transistor
Over-current due to wrong internal wiring
Over-current due to abnormal supply voltage
Over-current due to defective PCB
Error detection due to defective PCB
Over-current due to closed stop valve
Over-current due to compressor failure
Over-current due to poor installation condition
Troubleshooting
127