Refrigerator temperature fluctuates widely; sometimes too warm, sometimes freezing items.

Safety: Unplug the refrigerator before accessing sensors or control boards.

Steps to stabilize temperature:

• Check loading and airflow: Avoid overpacking shelves and blocking vents. Allow air to circulate freely.
• Verify settings: Set temperature controls to recommended levels and avoid frequent adjustments.
• Inspect thermistor placement: Ensure the sensor is properly clipped to the liner or evaporator and not hanging loose or touching warm components.
• Test thermistor: Measure resistance at room temperature and compare to specifications. Replace if out of range.
• Control board: If sensors and airflow are good but fluctuations persist, the main control board may be misreading temperatures and could require replacement.