Interior light stays on even when the freezer door is closed, and the temperature rises.

Safety: Unplug the freezer before working on the switch.

• Check door alignment: Ensure the door fully contacts the switch area when closed.
• Test switch: Manually press the switch and see if the light turns off. If not, the switch is likely faulty.
• Replace switch: Remove the old door/light switch and install a new Bauknecht-compatible switch or sensor.
• Verify operation: Restore power and confirm the light turns off when the door is closed.