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Troubleshooting
SiBE04-101
110
Service Diagnosis
4.21
Output Overcurrent
Remote Controller
Display
L5
Outdoor unit LED
Display
A
5
1
3
2
3
3
4
4
3
Method of
Malfunction
Detection
Detection of output overcurrent based on current flowing in DCCT.
(Inverter direct current part)
Malfunction
Decision
Conditions
Detection of abnormal position signal during compressor operation.
Detection of abnormal speed during compressor operation.
When output overcurrent enters microcomputer from output overcurrent detection circuit.
When error occurs 16 times, system shuts down.
Condition for error counter reset
When compressor operates for 8 minutes without output overcurrent.
Supposed Causes
Overcurrent due to faulty power transistor.
Overcurrent due to faulty internal wiring.
Overcurrent due to supply voltage abnormality.
Ditection error due to faulty PCB.
Overcurrent due to faulty PCB.
Overcurrent due to closed stop valve.
Overcurrent due to faulty compressor.
Overcurrent due to improper installation condition.
SiBE04-101.book Page 110 Monday, October 15, 2001 3:08 PM