Is hot food (in an open container) stored in the product?
1. Frost builds up in the freezer.
1. Hot food directly stored in the freezer releases steam, creating frost and icicles. When icicles form on refrigerator ceiling, door may not closed
How to fix
1. Hot foods should be cooled down before being stored in the freezer.
2. Remove icicles on ceiling with a hot towel.
[Frost in the freezer]