Freezer displays L1 or LO; temperature reading is very low or below display range; unit may over-freeze contents.

Safety first: Unplug the freezer before accessing controls or sensors.

• 1. Verify actual temperature: Use a separate thermometer to confirm that the freezer is indeed much colder than setpoint.
• 2. Check temperature setting: Ensure the set temperature is not at the coldest setting unintentionally.
• 3. Inspect and test cabinet sensor: Access the cabinet NTC sensor and measure resistance. If it reads as if the cabinet is warm when it is actually very cold, replace the sensor.
• 4. Check control board relays: If the compressor runs continuously even when the setpoint is reached and the sensor is good, the compressor relay on the control board may be stuck closed. Replace the main control board.
• 5. Mechanical thermostat models: If your Electrolux chest freezer uses a mechanical thermostat, test it for proper open/close operation and replace if it fails to open at the correct temperature.