Samsung Refrigerator Error Code LOW (Freezer)

The LOW error in the freezer display means the control board is receiving a temperature sensor reading that is either above +50°C or below -50°C, both of which fall outside any valid operating range. This points to a fault in the room temperature sensor or the freezer sensor circuit rather than an actual temperature problem. Common causes include a disconnected sensor, a broken wire, or a failed sensor element. The refrigerator cannot regulate cooling reliably until the sensor fault is resolved.

A reset may temporarily clear the LOW error code from the display, but it will return if the underlying sensor fault has not been repaired. Resetting the unit by unplugging it for a few minutes can be a useful first step to confirm whether the fault is intermittent. However, any persistent wiring, connector, or sensor issue must be physically corrected for the error to stay cleared. Do not rely on repeated resets as a long-term solution.

Repair costs vary depending on what component has failed. A replacement NTC thermistor sensor typically costs between $15 and $50 for the part alone. If professional labor is needed, total repair costs including diagnosis and installation generally range from $100 to $250. A damaged wiring harness or a failed control board would increase costs beyond that range.

Some causes of the LOW error are DIY-friendly, such as reseating a loose sensor connector or inspecting visible wiring for obvious damage. If the connector is secure and the wiring looks intact, further diagnosis requires a multimeter to test sensor resistance and wire continuity. Replacing a faulty sensor is a moderate-difficulty repair that many experienced DIYers can complete. If the control board itself is involved, professional service is recommended.

Operating the refrigerator with an active LOW sensor error carries some risk because the control board may not be able to accurately regulate freezer temperature without a functioning sensor. Food safety could be compromised if the unit runs too warm or too cold without the system detecting it. It is best to check freezer temperatures manually with a thermometer and minimize the time the error remains unresolved. Prompt diagnosis and repair is strongly advised.