Troubleshooting
Samsung Electronics 4-123
4-4-80 Input / Output Current sensor error
Outdoor unit display
INVERTER1 PCB(Input Current sensor)
INVERTER2 PCB(Input Current sensor)
INVERTER1 PCB(Output Current sensor)
INVERTER 2 PCB(Output Curren t sensor)
OUTDOOR FAN PCB (FAN1 Output Current sensor)
OUTDOOR FAN PCB (FAN2 Output Curren t sensor)
Judgment Method
Sensor Output detection : Judged as an error if the detected value is more than 2.8V or 0.2V less than
Cause of problem
Input voltage defective
PCB voltage sensing circuit defective
Power Off
Replace Inverter PCB
Replace Fan PCB
Yes
No
Is Power connection accurately connected?
E485 or E385?
E468 or E368?
E493 or E393?
Power Cable re-connection
1.
Cause of problem
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