The ice at the inlet of the Evaporator.
Large accumulation of ice in the food storage space acts as insulation. It leads to deterioration of cooling. The cause is usually a leaky door seals (gaskets). In a frost-free or automatic defrost fridge, ice buildup indicates that the thawing does not work.
Many of the refrigerator with a separate freezer compartment door electric heater around the doorway. This electric heater, also known as mullian heater. He keeps ice or from moisture, forming there. If the device does not work, the accumulation of ice can keep the door was closed. Moisture can go and pick up on the evaporator. Refrigerator wiring plan wiring plan indicates whether or not the door heater is used on the unit.
Flat piece of paper can be inserted between the door and the Cabinet. He must be securely fastened when the door is closed. If this paper can be easily pulled out the gasket is not tight enough. It may be that door seal lost flexibility (life) or broken. In any case, the gasket should be replaced. In some cases, the hardware (latch and loops) can be adjusted to get a better seal...
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Industrial