Refrigerator interior light stays on when door is closed, causing heat and possible melting near light cover.

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

Steps:

• 1. Confirm symptom: Close the door slowly and look for light leakage around the gasket. You can also feel for warmth near the light housing.
• 2. Test switch: Press the door switch manually (if visible). If the light does not turn off, the switch or control is faulty.
• 3. Replace switch: Remove the switch from the cabinet frame, disconnect wiring, and install a new Siemens door switch.
• 4. Reed sensor models: If a hidden reed sensor is used, check magnet alignment in the door and replace the sensor if it does not respond.
• 5. Control board: If the switch and sensor are good but the light remains on, the main PCB may have a stuck relay or transistor and require replacement.

Warning: Prolonged overheating near the light can damage plastic parts; address this issue promptly.