Freezer interior has heavy frost buildup on walls and food; manual-defrost Avanti chest or upright model.

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

Steps:

• Manual defrost: Remove food to a cooler, unplug the unit, and allow all ice to melt. Use towels to absorb water.
• Inspect gasket: Check the entire perimeter of the door or lid gasket for gaps, tears, or deformation. Clean with warm soapy water and dry. Replace the gasket if it does not seal tightly.
• Check lid/door alignment: Ensure hinges are tight and the door is not twisted. Adjust hinges if necessary so the gasket contacts evenly.
• Verify drain plug: On chest freezers, ensure the drain plug is installed and sealing properly to prevent air leaks.
• Usage habits: Minimize door openings and avoid leaving the door open for extended periods, especially in humid climates.