Output Overcurrent - Daikin FTK25JVE9 Service Manual

Si04-115
5.12

Output Overcurrent

L5 L5 L5 L5
Remote
Controller
Display
Outdoor unit LED A
Display
Method of Detection of output overcurrent based on current flowing in Power transistor.
(Inverter direct current part)
Malfunction
Detection
Malfunction When output overcurrent enters microcomputer from output overcurrent detection circuit.
Decision
When error occurs 6 times, system shuts down.
Conditions
Condition for error counter reset
When compressor operates for 5 minutes without output overcurrent.
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Supposed
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Causes
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Service Diagnosis
5
Overcurrent due to faulty power transistor.
Overcurrent due to faulty internal wiring.
Overcurrent due to supply voltage abnormality.
Overcurrent due to faulty PCB.
Overcurrent due to closed stop valve.
Overcurrent due to faulty compressor.
Overcurrent due to improper installation condition.
Trouble shooting
77