Samsung RB Series Refrigerator Error Code 5 on Refrigerator Display
Samsung RB Series Refrigerator Error Definition = Refrigerator Temperature Sensor
How To Fix/What To Check = Disconnect power to the refrigerator and check the wire harness in the refrigerator temperature sensor circuit.
If the wiring connection checks good then replace the refrigerator temperature sensor.
If the issue is not resolved replace the electronic control board.
Parts That May Be Needed To Repair Refrigerator = Refrigerator Temperature Sensor or Electronic Control Board