Wine cooler interior light stays on even when the door is closed, causing warming inside the cabinet.

Safety: Unplug the unit before working on the door switch or PCB.

• Check door closure: Ensure the door fully closes and compresses the gasket. Adjust hinges if necessary.
• Test door switch: For mechanical switches, press the switch manually and see if the light turns off. For magnetic sensors, move a magnet near the sensor and observe the light. Replace the switch or sensor if it does not respond.
• Inspect magnet: Verify that the door magnet is present and correctly positioned.
• PCB light control: If the switch is good but the light remains on, the control PCB's light driver may be shorted and require board replacement.