Freezer temperature fluctuates widely; sometimes too warm, sometimes too cold.

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

• Check settings: Ensure the temperature is set correctly and that SuperFreeze is not left on permanently.
• Inspect sensor location: Make sure the cabinet sensor is not touching the evaporator or covered by food packaging, which can cause false readings.
• Test sensor or thermostat: For electronic models, follow the NTC sensor tests (see E2). For mechanical thermostats, listen for a click when turning the dial from warm to cold; no click may indicate failure.
• Replace faulty part: Install a new Balay cabinet NTC sensor or Balay mechanical thermostat as appropriate for your model.

If fluctuations persist after replacing the sensor/thermostat, the main control board may be defective and should be evaluated by a technician.