Samsung AM032MNQDCH/AA Service Manual page 322

Troubleshooting
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
4-122
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
Samsung Electronics