SiUS04-904
Troubleshooting
134
Service Diagnosis
4.20 Output Overcurrent Detection
4.20.1 09/12 Class
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 255 times.
Clearing condition: Continuous run for about 10 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
Summary of Contents for FTXS09HVJU
Page 1: ...SiUS04 904 Applied Models Inverter Pair Heat Pump Inverter Pair Wall Mounted Type H Series...
Page 9: ...Safety Considerations SiUS04 904 viii Safety Considerations...
Page 10: ...SiUS04 904 List of Functions 1 Part 1 List of Functions 1 Functions 2...
Page 72: ...Control Specification 15 18 24 Class SiUS04 904 62 Function and Control...
Page 77: ...FTXS09 12HVJU SiUS04 904 66 Operation Manual...
Page 78: ...SiUS04 904 FTXS09 12HVJU Operation Manual 67...
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Page 87: ...FTXS09 12HVJU SiUS04 904 76 Operation Manual 3P232717 1C...
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Page 95: ...FTXS15 18 24HVJU SiUS04 904 84 Operation Manual Do not hit or forcefully push the operation...
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