Samsung Refrigerator Error Code F-1 (F-Sensor)

The F-1 code indicates a fault in the freezer compartment temperature sensor circuit. It is triggered when the sensor signal is lost due to a disconnection, short circuit, housing separation, or contact error, or when the detected temperature exceeds 149°F (65°C) or drops below -58°F (-50°C). The refrigerator cannot regulate freezer cooling reliably until the fault is resolved.

It is not advisable to rely on the refrigerator for food storage while the F-1 fault is active. Without a working freezer sensor, the main PCB cannot accurately control compressor and fan cycles, which means freezer temperatures may become unpredictable. Food safety could be compromised if the freezer is not maintaining proper temperatures.

If the fix is simply reseating a loose connector, there is no parts cost involved. A replacement freezer thermistor typically costs in the range of $15 to $50 for the part depending on the specific model. If professional service is needed, labor charges can bring the total repair cost to somewhere between $100 and $250, though this varies by location and service provider.

In many cases, yes. Start by unplugging the refrigerator and checking that the wiring harness connectors at main PCB positions CN30 and CN75 are fully seated with no bent or corroded pins. If the connectors are secure, use a multimeter to measure resistance at CN30 pin 3 and CN75 pin 1 to determine whether the thermistor itself has failed. Replacing a freezer thermistor is a straightforward repair for someone comfortable working with appliance wiring.

A power reset may temporarily clear the displayed error, but if the underlying sensor fault still exists, the F-1 code will return once the board runs its diagnostics again. A reset alone does not fix a failed thermistor, a broken harness, or a loose connector. The root cause must be identified and corrected for the error to stay cleared.