Ice build-up on the interior walls or around the door opening.

Safety first: Do not use sharp tools to remove ice; risk of damaging refrigerant lines.

Steps:

• Inspect door gasket: Look for gaps, tears, or hardened sections of the Liebherr door seal. Close the door on a strip of paper at multiple points; if it pulls out easily, the seal is weak.
• Clean gasket: Wipe the gasket and mating surfaces with warm soapy water to remove grease and debris.
• Defrost: Turn off the freezer and allow all ice to melt naturally. Dry the interior thoroughly.

Remedy: Replace a damaged or deformed door gasket. Ensure the door hinges are correctly adjusted so the door closes squarely against the seal.