Interior light does not turn on when the door is opened.

Safety first: Unplug the refrigerator before working on the light or switch.

Steps:

• 1. Test the door switch: Press the switch manually; if the display or fan behavior changes but the light stays off, the switch is likely good.
• 2. Inspect the light module: Remove the light cover and check for loose connectors or visible damage.
• 3. Replace the LED module: If the module receives power but does not light, install a new De Dietrich LED light assembly.
• 4. If neither switch nor module is faulty: The main PCB's lighting circuit may have failed and require replacement.