Interior lights not working but refrigerator cools normally.

Safety: Unplug the refrigerator before replacing bulbs or LED modules.

Steps:

• Check bulbs/modules: On models with replaceable bulbs, remove and inspect the bulb. Replace with the correct type and wattage. For LED modules, inspect for dark or burnt spots.
• Test door switch: If lights never come on, test the door switch for continuity when pressed.
• Inspect connectors: Ensure the light harness is firmly connected to the module and control board.
• Replace components: Replace the door switch, bulb, or LED module as needed. If multiple LEDs fail at once, the control board light driver may be defective and require replacement.