Input / Output Current Sensor Error - Samsung AM009FN1DCH/AA Service Manual

4-4-80 Input / Output Current sensor error

Outdoor unit display
Judgment Method
· Sensor Output detection : Judged as an error if the detected value is more than 2.8V or 0.2V less than
· Input voltage defective
Cause of problem
· PCB voltage sensing circuit defective
1. Cause of problem
E485 or E385?
E468 or E368?
Replace Inverter PCB
Samsung Electronics
INVERTER1 PCB(Input Current sensor)
INVERTER2 PCB(Input Current sensor)
INVERTER1 PCB(Output Current sensor)
INVERTER 2 PCB(Output Current sensor)
OUTDOOR FAN PCB (FAN1 Output Current sensor)
OUTDOOR FAN PCB (FAN2 Output Current sensor)
Power Off
Is Power connection accurately connected?
Yes
No
Power Cable re-connection
E493 or E393?
Replace Fan PCB
Troubleshooting
4-105