Si20-701_B Troubleshooting by Remote Controller
278
3.61
L5
Overcurrent of DC Output
(Instantaneous)
Remote Controller Display
L5
Applicable Models
RZ(Y)
Method of Error Detection
Current flowing in the power transistor is converted to
voltage by T1C (DC current sensor) for detection.
Error Decision Conditions
When an excessive current flows in the power transistor.
(Instantaneous overcurrent also causes activation.)
Supposed Causes
Defective compressor coil (open circuit, defective
insulation)
Defective compressor startup (seizing)
Defective inverter
Defective outdoor unit PCB
Momentary disturbance in supply voltage
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