Interior light stays on all the time or never turns on when the door is opened.

Unplug the cooler before testing the switch or light.

• Identify door switch type: Some hOmeLabs models use a mechanical plunger switch in the frame; others use a magnetic reed switch hidden in the cabinet.
• Test mechanical switch: Press the plunger by hand and observe if the light turns on/off (with power applied). If it feels loose or intermittent, replace the door switch.
• Test magnetic switch: Move a small magnet along the door frame where the switch is located and see if the light responds. If not, the reed switch may be faulty.
• Check wiring: Inspect the switch wiring harness for damage or loose connectors at the main board.
• LED strip test: If the switch works but the light never comes on, the LED strip may be bad. Replace the LED light strip as needed.
• Control board issue: If the light stays on regardless of switch position, the light control circuit on the main board may be stuck. Replace the main control board.