Error Code F-SENSOR
Freezer compartment temperature sensor is open or shorted
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: -19 deg C LED Lamp blinking
What This Means
Connector slipped out or poor contact; Wire cut or short circuit; Abnormal sensing temperature above +65 deg C or below -50 deg C; Defective thermistor
What actually causes this:
Disconnected, damaged, or failed freezer thermistor
First Thing to Check
Check CN30 connector seating; measure voltage at CN30 pins 14 and 16
Parts Involved
How to Fix
- 1
Check MAIN PCB CN30 connector is properly inserted
- 2
Measure voltage between MAIN PCB CN30 pin 14 and pin 16
- 3
Voltage should be within 4.5V to 0.5V
- 4
0V indicates short circuit; 5V indicates open circuit
- 5
Refer to DATA1 Temp Table for resistance vs temperature values
- 6
Replace sensor if out of range and connectors are verified good
This Error Applies To
Samsung RT Series Refrigerators (2021) (2021–present)
Related Error Codes
Rotary temperature control switch has a fault
Ambient temperature sensor is open or shorted
Freezer defrost sensor evaporator thermistor is open or shorted
Ice maker has a sensor, function, or water pipe heater fault
Refrigerator compartment temperature sensor is open or shorted
Refrigerator compartment fan motor is not spinning or not generating feedback signal
Freezer defrost heater circuit failure - defrosting did not complete within maximum allowed time
Condenser fan motor is not spinning or not generating feedback signal