If we are talking about old refrigerators that were produced 30 years ago, then ice freezing is quite normal for such devices. Remember how much time you spent defrosting the unit?
But time does not stand still and manufacturers of modern household appliances are constantly improving their inventions. Refrigerators are no exception to this. New models with modern “chips” are constantly appearing, which allows their owners to pay more attention to other things.
For example, if we are talking about devices with the No Frost system, then there should be no such phenomenon as frosting, snow, ice, or frost if it is properly operated. And if you notice such symptoms, you should contact a specialist or try to deal with this problem yourself.
Causes of frost or ice freezing that are not related to the breakdown
There are reasons why you should not immediately worry and contact specialists. Let’s try to understand them.
During the operation of the refrigerator, especially in the warm season, users set the maximum cooling temperature or close to it. By setting the maximum temperature, you thereby make the compressor work harder than you increase the additional load on it and the unit begins to make a lot of noise. It is worth noting that the temperature outside the device and inside are not related to each other.
If you see ice or frost on the back of the refrigerator, which is formed and then disappears – do not worry. This is an absolutely normal situation for refrigerators with a drip defrosting system. And it is too early to contact the master.
There are often cases when users themselves violate the conditions and rules of operation of household appliances.
The reason for this may be that the refrigerator door is not tightly closed or the seal (rubber band around the perimeter of the door) is worn out, which can lead to another problem – the refrigerator will stop cooling. Also, do not put hot containers in the refrigerator, especially if they are not covered with a lid. In this case, the liquid from them will evaporate and turn into ice.
Causes of icing on the back wall of the refrigerator that may be related to its breakdown
If the previous causes of icing and snow formation that we have considered are not your case, then this may indicate signs of failure of one of the refrigerator modules. What it can be we will consider further.
Breakdown of the thermostat or temperature sensor – one of the causes of icing of the refrigerator
If you use an electromechanical refrigerator, we are talking about a thermostat that is designed to measure the temperature in the evaporator. At the same time, the compressor works almost constantly and very rarely turns off, and the refrigerator chamber forms a lot of frosts.
If your refrigerator is more modern and has an electronic control, then the temperature sensor could fail. It is designed to measure the temperature inside the refrigerator. Information about the temperature from it comes to the control board (in this case, it receives incorrect information about too high temperature) and the engine begins to catch up with the cold almost continuously. Thus, forming frost on the back wall of the refrigerator.
Why the back wall of the refrigerator freezes – freon or refrigerant leakage
In this case, ice forms on the back wall unevenly, and the engine is almost constantly in operation. After defrosting, the refrigerator may not work at all. Freon can “disappear” at the joints or adhesions. It can also “go out” through the evaporator if it is rusted. Having “lost” freon, the compressor starts working 24/7 thereby creating icing. It is necessary to eliminate the cause of freon leakage or replace the evaporator if the leakage occurred through it.
The cause of frost on the back wall of the refrigerator is clogging of the capillary pipeline
Signs of clogging – the compressor works around the clock, overheats and the refrigerator compartment is poorly cooled.
The capillary system can be clogged partially or completely, and because of this freon does not circulate normally. In this case, it is necessary to clean the system and, if necessary, refill it with freon.
Violations in thermal insulation – can be the cause of the freezing of the rear wall of the refrigerator
Signs: uneven formation of snow cover, ice on the back wall of the refrigerator (often localized in one place). It will be necessary to replace the damaged part of the thermal insulation in order to eliminate the fault.
The electromagnetic valve does not work in normal mode
it is designed to cool alternately the freezer and refrigerator compartments in case your device uses one compressor. Signs of an incorrectly working valve: the refrigerator freezes and the freezer is warm. The most effective way to solve the problem is to replace the valve.
If after defrosting the snow layer reappears in your refrigerator, we advise you to seek advice from specialists.
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