Condensation or water droplets forming on the exterior of the cabinet or around the door frame.

Safety first: No internal electrical work is needed for basic checks.

Step-by-step:

• Check gasket seal: Close the door on a sheet of paper at various points. If the paper pulls out easily, the gasket may not be sealing and should be replaced.
• Reduce humidity: Use a dehumidifier in very humid rooms and avoid placing the refrigerator near open windows or steam sources.
• Door usage: Minimize door opening time and ensure doors are fully closed.
• Mullion heater: Some Liebherr models have a frame heater; if condensation is severe and persistent, a technician should test the heater circuit.