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Troubleshooting
Si04-306
118
Service Diagnosis
4.18 Output Over Current Detection
Remote
Controller
Display
L5
Method of
Malfunction
Detection
An output over-current 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 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 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Supposed
Causes
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
Summary of Contents for FTKS50BVMA
Page 17: ...List of Functions Si04 306 8 List of Functions...
Page 35: ...Specifications Si04 306 26 Specifications...
Page 143: ...Check Si04 306 134 Service Diagnosis...
Page 187: ...Outdoor Unit Si04 306 178 Removal Procedure...
Page 191: ...Others Si04 306 182 Others...
Page 201: ...Wiring Diagrams Si04 306 192 Appendix FTKD 18 24 28 BVMS...
Page 203: ...Wiring Diagrams Si04 306 194 Appendix RKD 18 24 28 BVMS...