Daikin J Series Manuel de service Page 86

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Si04-115 Trouble shooting
Service Diagnosis 77
5.12 Output Overcurrent
Remote
Controller
Display
L5
L5L5
L5
Outdoor unit LED
Display
A
5
Method of
Malfunction
Detection
Detection of output overcurrent based on current flowing in Power transistor.
(Inverter direct current part)
Malfunction
Decision
Conditions
When output overcurrent enters microcomputer from output overcurrent detection circuit.
When error occurs 6 times, system shuts down.
Condition for error counter reset
When compressor operates for 5 minutes without output overcurrent.
Supposed
Causes
"
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.
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