Freezer interior temperature fluctuates widely, causing partial thawing and refreezing of food.

Safety first: Unplug the freezer before testing sensors or accessing the control board.

• 1. Check loading and airflow: Avoid blocking air vents with large packages. Allow space between items for air circulation.
• 2. Inspect door gasket: Ensure a tight seal to prevent warm air ingress.
• 3. Test temperature sensors: Measure resistance of cabinet and evaporator NTC sensors and replace any that show intermittent or out-of-range readings.
• 4. Replace control board if needed: If sensors and seals are good but fluctuations persist, the thermostat logic on the main PCB may be faulty and require replacement.