One cause of excessive frost and snow-like ice in a fridge or freezer can be a poorly fitting or damaged door seal. If the door seal becomes distorted or worn then the seal will start to allow warm moist air into the freezer or fridge. This can cause snowy ice to deposit around the shelves in a freezer or on the back wall of a fridge.
If the door seal is worn then clearly it needs replacing, but if it’s just a bit distorted it can sometimes be manipulated back into shape with the aid of either a hair dryer or a hot cloth. Carefully heat the seal and try to form it back into the right shape closing the door and letting the seal cool before opening the door again.
Another possible cause of frost in fridge or freezer
If the fridge or freezer is not level the cabinet may become twisted. This can cause the door to distort. The door won’t fit properly and the seal will be compromised. This can allow gaps which again lets warm moist air get drawn into the appliance. So make sure the appliance is properly level. Check it with a spirit level from front to back and left to right. The feet are adjustable. If necessary use some packaging under the feet.
You can always try the paper test, which is to place a piece of paper between the seal and the frame and see if it will hold, if it doesn’t the seal will be letting warm air into the unit.
Fridge door seals
Many modern fridges and freezers do not have replaceable door seals. You can only buy a complete new door. This is disgraceful. It’s another symptom of manufacturers making appliances less repairable in order to make them cheaper to manufacture.
On the subject of door seals it is not advisable to open any fridge or freezer door by curling your fingers around the frame. This can result in the seal wearing and eventually splitting. Always use the handle, and don’t forget if you do reshape a door seal always fully defrost the unit afterwards. Another point to remember is that if the door seal has split on the face that touches the frame it needs to be changed. If it is split on the outer side crease it is only cosmetically unsightly.
Tip: When placing food in the fridge or freezer
Introducing warm food, or uncovered food in dishes can introduce moisture, which can then ice up. Also when putting away shopping keep the doors open as little as possible. For freezers, read the instruction book section on fast the fast freeze button, which is designed to be used prior to introducing fresh food to see if you need to start using it.
Ice or water in base of fridge or freezer
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