Interior temperature fluctuates widely; some bottles are much warmer or colder than others.

Safety: Unplug the unit before accessing the evaporator fan.

Steps:

• Rearrange bottles: Avoid tightly packing bottles against the rear wall or directly in front of vents. Leave space for air circulation.
• Check vents: Ensure all internal air vents are unobstructed by shelves or labels.
• Verify fan operation: Confirm the evaporator fan runs whenever the compressor is on. If intermittent or not running, test and replace the fan motor.
• Use a thermometer: Place a separate thermometer on different shelves to verify improvements after adjustments.

If temperature swings remain large despite good airflow, the control system or sensors may need professional evaluation.