Wine cooler interior temperature fluctuates widely; bottles experience frequent warming and cooling cycles.

Safety: Disconnect power before accessing internal components.

• Monitor door usage: Reduce frequent door openings and ensure the door closes fully each time.
• Check door gasket: Inspect for gaps, tears, or hardened sections. Replace the door gasket if it does not seal evenly.
• Verify fan operation: Ensure the evaporator fan motor runs consistently when cooling is active. Replace if it stops intermittently.
• Inspect sensors: Confirm NTC sensors are firmly mounted in airflow, not dangling or pressed into insulation.
• Control board: If hardware is sound but temperature swings remain extreme, the main control board may be miscontrolling the compressor and should be evaluated or replaced.