Samsung Refrigerator Error Code Fridge MIN

The Fridge MIN error on a Samsung refrigerator indicates a problem with the peripheral or ambient temperature sensor. The error appears when the sensor circuit detects a temperature reading above 149°F (65°C) or below -58°F (-50°C), or when there is a wiring fault such as a cut wire, short-circuit, or contact failure. It can also appear if the sensor is missing entirely. The main PCB uses this sensor to monitor environmental conditions around the unit.

The Fridge MIN error relates to the ambient temperature sensor, not the primary internal temperature sensors, so the refrigerator may continue cooling normally in the short term. However, the unit relies on ambient temperature data to optimize its operation, and a prolonged fault can affect efficiency and cooling performance. Monitor your food temperatures closely and address the error promptly to avoid any risk of spoilage.

A reset, such as unplugging the unit for a few minutes and restoring power, may temporarily clear the error code. However, if the underlying fault with the ambient temperature sensor or its wiring is still present, the Fridge MIN code will return. A reset is useful for ruling out a one-time glitch, but a persistent error requires proper diagnosis and repair of the sensor circuit.

Some causes of the Fridge MIN error are approachable for a knowledgeable DIYer. Start by unplugging the refrigerator, locating the ambient temperature sensor, and checking whether the connector at the main PCB (CN31) is firmly seated and free of corrosion. If the connector looks good, you can use a multimeter to check the voltage at CN31 pins #1 and #4 after restoring power, looking for a reading in the 4.7V to 0.6V range. Replacing a sensor is a moderate repair, but if the main PCB is at fault, professional service is recommended.

Repair costs depend on the root cause. If the fix is simply reseating a loose connector, there may be no parts cost at all. Replacing the ambient temperature sensor typically costs between $20 and $60 for the part, plus labor if a technician is involved. A main PCB replacement is more expensive, with parts ranging from $100 to $300 or more depending on the model, plus labor.