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

The F-1 code indicates a problem with the external ambient temperature sensor circuit. The fault can be caused by sensor housing separation, a contact error at the connector, a wiring disconnection, or a short circuit. The main PCB monitors the sensor signal voltage at connector CN32 pin 1 to CN1 pin 3 and triggers this code when the reading falls outside the 1.0V to 4.5V acceptable range.

The refrigerator may continue running in a limited capacity, but without accurate ambient temperature data, the control board cannot optimize cooling cycles correctly. Food safety could be affected if cooling performance is significantly degraded. It is best to address the fault promptly rather than relying on the unit to maintain safe temperatures indefinitely.

If the fix is simply reseating a loose connector, the cost may be limited to a service call fee, typically in the range of $75 to $150. Replacing the ambient temperature sensor generally adds $20 to $80 in parts. If the main PCB is at fault, board replacement can range from $150 to $400 or more depending on the model and labor costs in your area.

If the cause is a loose or unplugged connector, reseating it is a straightforward repair that does not require special tools. However, diagnosing a shorted or open sensor requires a multimeter and the ability to test voltage at specific PCB connectors. Replacing the ambient sensor or the main PCB is within reach for experienced DIYers but may be best left to a technician if you are not comfortable working with electronic components.

A power reset may temporarily clear the F-1 code from the display, but the error will return if the underlying sensor circuit fault is still present. Resetting does not repair a failed sensor, damaged wiring, or loose connector. The correct approach is to diagnose and correct the root cause before assuming the problem is resolved.