LG Door Switch or Light Control Failure

Wine cooler interior light stays on all the time, even with the door closed; the cabinet may get warm near the light.

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Possible Causes

Stuck door switch, Misaligned door magnet, Shorted light relay on main PCB, Faulty user interface light control

How to Fix / Troubleshooting

Safety: Unplug the unit before working near the light fixture or control board. The light lens and bulb may be hot.

Steps:

  • 1. Check door closure: Ensure the door closes fully and is not hitting shelves or bottles.
  • 2. Test door switch: Locate the door switch (mechanical plunger or magnetic reed). Manually actuate it and see if the light turns off. If not, the switch or control is faulty.
  • 3. Inspect magnet alignment: For magnetic switches, verify the door magnet lines up with the sensor. Adjust hinges or replace magnet if needed.
  • 4. Replace door switch: If the switch does not change state when actuated, replace the door switch assembly.
  • 5. Control board check: If the switch works but the light remains on, the light relay or transistor on the main PCB may be stuck. Replace the main control board.
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Repair Difficulty

Easy 2/5

Required Part

Door Switch Assembly
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