Freezer runs continuously and never shuts off, but temperature appears normal or slightly cold.

Safety first: Unplug the freezer before adjusting or replacing components.

• 1. Check ambient conditions: Ensure the freezer is installed in a room within the recommended temperature range (typically 10–43°C / 50–109°F). Extreme cold or heat can cause long run times.
• 2. Inspect door gasket: Look for gaps, tears, or hardened sections. Close the door on a sheet of paper at several points; if it pulls out easily, the seal is weak. Replace the door gasket if needed.
• 3. Verify temperature: Use a thermometer to confirm the actual internal temperature. If it is much colder than setpoint, see overcooling fault; if normal, the control may be miscalibrated.
• 4. Replace thermostat or control board: If the unit never cycles off despite correct temperature and good sealing, replace the mechanical thermostat or main control board depending on model type.