Output Overcurrent Detection - Daikin FTXN25KEV1B Service Manual

SiBE041102_A

4.21 Output Overcurrent Detection

L5
Remote
Controller
Display
Method of An output overcurrent 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 overcurrent signal is fed from the output overcurrent detection circuit to the
microcomputer.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 11 minutes without any other error
Poor installation condition
Closed stop valve
Defective power module
Wrong internal wiring
Abnormal power supply voltage
Defective outdoor unit PCB
Defective compressor
Troubleshooting
81