Heavy frost buildup on freezer walls, ceiling, and food packages.

Safety first: Unplug the freezer before defrosting. Do not use sharp tools to remove ice.

• Inspect door gasket: Look for any tears, gaps, or hardened sections. Close the door on a strip of paper at multiple points; if the paper pulls out easily, the seal is weak. Replace the door gasket if necessary.
• Check door alignment: Ensure the door is level and closes squarely against the cabinet. Adjust hinges or leveling legs as needed to ensure proper alignment.
• Defrost the unit: Remove all food, unplug the freezer, and leave the door open until all frost melts. Use towels to absorb the melted water.
• Reduce door openings: Minimize how often and for how long the door is opened, especially in humid environments.