Interior light stays on even when the door is closed, causing heating inside the cabinet.

Safety: Unplug the wine cooler before adjusting the door switch or magnet.

• Check door alignment: Ensure the door closes fully and is not warped.
• Inspect magnet and reed switch: Verify that the door magnet is present and aligned with the reed switch location in the frame. Replace missing or weak magnets.
• Test switch: Use a multimeter to check the reed switch or mechanical switch for proper open/close operation when the door is moved.
• Replace faulty components: Install a new Grundig door reed switch or magnet if defective. If the switch works but the light remains on, the main PCB may be at fault.