Refrigerator temperature fluctuates widely, sometimes too warm, sometimes too cold.

Safety: Disconnect power before accessing sensors or control boards.

Steps:

• 1. Check usage: Ensure doors are not being opened excessively and that hot food is not placed directly inside.
• 2. Improve airflow: Avoid overpacking shelves. Keep vents clear to allow air circulation.
• 3. Verify settings: Set temperatures to manufacturer-recommended values and avoid frequent changes.
• 4. Test sensors: If fluctuations persist, test or replace the refrigerator and freezer NTC sensors (see E01 and E02 entries).
• 5. Control board: If sensors are good and airflow is adequate, the main control board may be regulating poorly and should be evaluated by a technician.