Owners of Belarusian brand equipment are often faced with a situation where a snow coat begins to actively form inside the chamber or on the back wall. Atlant two-chamber refrigerator is a reliable unit, but even it is not immune to failures in the defrosting system. Ice buildup can appear gradually, taking up more and more space, or form suddenly after the next cooling cycle. Understanding the nature of this phenomenon is the first step to eliminating the problem without calling a technician.
Usually the process begins with a violation of heat transfer or a malfunction in the electronics operating algorithm. If you notice that food is freezing to the shelves, and the door has become worse at closing due to ice, you cannot ignore this. Snow coat - this is not just a cosmetic defect, but a signal that the system No Frost or the drip defrosting system is not working correctly. In this article we will analyze in detail the mechanics of the process and diagnostic methods.
It is worth considering that the design of modern models involves automatic removal of moisture. If the water does not have time to evaporate or drain, it turns into ice. Often the reason lies in small things that are easy to fix on your own, but sometimes expensive components need to be replaced. Let's look at the main scenarios leading to icing.
Violation of the seal of the chamber and problems with the seal
The most commonplace, but common reason for the appearance of ice is the entry of warm, moist air from the outside. When you open the door, room air saturated with moisture enters. On cold surfaces, this moisture instantly condenses and freezes. If sealing rubber the door is worn out, cracked or simply dirty, the seal is constantly broken, even when closed.
Check the condition of the magnetic tape around the entire perimeter. It should fit snugly to the body and have no tears or creases. Dirt and grease adhering to the rubber interfere with tight contact, forming microscopic gaps. There is a constant flow of warm air through them, which the cooling system tries to compensate for by producing even more cold and, as a result, ice.
- ❄️ Check the tightness of the door using a sheet of paper: clamp it in different places, it should be pulled out with force.
- 🧼 Wash the seal thoroughly with warm water and a mild detergent means to remove the fatty film.
- 🔍 Inspect the rubber for mechanical damage, cracks or peeling from the body.
- 🌡️ Make sure that the products inside do not interfere with the tight closure of the sash.
⚠️ Attention! If the seal has become deformed over time, you can try to restore it with a hot hairdryer, gently heating and straightening the material. However, this is a temporary measure - it is better to order a new part.
It is also important to check the geometry of the door itself. If the refrigerator is not level or skewed, the door may not close completely. In two-chamber models Atlant the bottom door is often skewed due to the weight of the products. Adjusting the legs of the refrigerator helps to level the position of the unit and ensure proper closing.
Malfunctions of the No Frost defrosting system
In models with the system No Frost ice should not form on the walls in principle. All moisture is removed outside the chamber through special channels. If you see a coat of snow, it means the evaporator defrost cycle is broken. The evaporator is located behind the rear plastic panel, and if it fails, ice blocks the ventilation holes, cutting off the circulation of cold air.
The main element of the defrost system is Evaporator heating element. It turns on by a timer or electronic command and heats the radiator, melting the ice. If the heating element burns out, the ice does not melt, but builds up layer by layer. Over time, this lump of ice reaches the fan, which begins to hum or stops, which leads to the cessation of cooling in the chambers.
How does the defrost cycle work?
In standard mode, the refrigerator works for cooling for about 8-12 hours. Then the compressor is turned off and the defrost heating element is turned on for 15-20 minutes. The melt water flows into a pan under the compressor where it evaporates. If any stage of this cycle is disrupted, icing begins.
In addition to the heating element, sensors are responsible for the process. Defrost sensor controls the temperature of the evaporator and turns off the heating when the ice melts. If it “lies” or shorts, the system may either not start defrosting at all, or heat for too long. Diagnosis of these elements requires a multi-mbra and disassembling the rear panel of the freezer.
Clogged drain hole and outlet tube
Even if the defrost system is working and the ice on the evaporator is melting, the water needs somewhere to go. For this purpose, refrigerators Atlant are provided with a drainage hole. It is located at the bottom of the rear wall (in drip models) or under the evaporator (in No Frost). If this channel becomes clogged with crumbs, mold or an ice plug, the water does not leave, but accumulates below and freezes.
An ice plug formed in the drainage is a common cause of the appearance of a puddle on the floor of the refrigerator, which quickly turns into an ice pancake. Over time, this pancake grows upward, capturing the lower shelves and drawers. Cleaning the drainage is one of the simplest but most effective maintenance procedures.
For cleaning, you can use a special soft brush or a piece of flexible wire. It is important not to damage the canal walls with sharp objects. It is also effective to flush the hole with warm (not hot!) water from a syringe or syringe without a needle. This helps melt fatty deposits inside the tube.
Malfunctions of the thermostat and temperature sensors
The “brain” of the refrigerator is an electronic control module or a mechanical one thermostat. They receive data from temperature sensors and decide when to turn on the compressor and when to defrost. If the evaporator temperature sensor shows incorrect values (for example, that there is no ice, although there is ice), the defrosting command will not be received.
In models Atlant with electronic control, the air temperature sensor in the chamber often fails. He can “lie” by telling the controller that the refrigerator is warm, although in fact it is already below freezing temperature. The compressor works non-stop, freezing the entire contents and creating powerful ice on the walls.
Diagnostics of the sensors is carried out by testing with a multimeter. The resistance of a working sensor changes depending on the temperature. If the device shows a break or resistance that does not correspond to the temperature, the part must be replaced. Sometimes the problem lies not in the sensor itself, but in the oxidized contacts of the connector.
Technical characteristics and diagnostic table
To understand the scale of the problem, it is important to know which nodes are responsible for what. Below is a table that helps to compare symptoms with probable malfunctions in two-chamber refrigerators Atlant.
| Symptom | Probable cause | Unit to check | Complexity repair |
|---|---|---|---|
| Ice only on the back wall | Defective defrost heating element or timer | Evaporator heater | Medium |
| Ice at the bottom of the chamber, water on floor | Clogged drainage channel | Drainage tube | Low |
| Snow coat around the entire perimeter | Loss of tightness | Door seal | Low |
| The refrigerator does not turn off, everything is covered in ice | Temperature sensor failure | Thermal sensor / Thermostat | High |
| Fan noise, no cold | Ice blocks the fan | No Frost system | High |
When diagnosing, it is important to take into account the model of your unit. In old mechanical Atlantakh the thermostat often suffers, and in new inverter models - electronics and sensors. Compressor with these malfunctions it is usually operational, but works in an enhanced mode, which reduces its resource.
Rules of operation and placement of products
Often users themselves provoke the formation of ice by violating the rules of operation. For example, placing hot food in a chamber dramatically increases the humidity and temperature inside. The cooling system does not have time to cope with such a volume of heat and moisture, which leads to condensation and freezing.
It is also important to place food correctly. If you pack the shelves so tightly that they block the air circulation openings, the cold will not be distributed evenly. In areas of stagnant air, local hypothermia and frost freezing may occur. There must be a gap of 2-3 cm between the products and the back wall.
⚠️ Attention! Never place open containers of liquid without a lid in the refrigerator. Evaporation of water from a pot of soup is a direct path to the formation of an ice crust on the walls and shelves.
☑️ Check before calling a technician
Algorithm for complete defrosting and checking
If you find ice, the first thing to do is defrost the refrigerator. But don’t just turn it off for a couple of hours, but let it warm up completely. For two-chamber models Atlant the minimum defrosting time is 24 hours. This is the only way to have time to melt ice in hard-to-reach places, for example, inside the case behind the evaporator.
After defrosting, turn on the empty refrigerator and listen. If after a few hours of operation the characteristic cracking of ice or the hum of the fan appears again, then the problem is technical. If the unit operates quietly and ice does not appear for several days, most likely it was a violation of operating rules or a one-time electronic error.
During the defrosting process, you should not use sharp objects to chip ice. Piercing the evaporator with a knife is a fatal mistake, leading to a freon leak and costly repairs. The ice should melt naturally or with the help of a fan heater directed into the chambers with open doors.
Why does ice appear only in the freezer compartment, but everything is fine in the refrigerator?
This is a classic sign of problems with the system No Frost or the sensors of the freezer compartment. In two-chamber refrigerators Atlant the evaporator is often located in the freezer. If circulation or defrosting there is disrupted, ice builds up in the freezer, and the cold simply stops flowing into the refrigerator compartment in the required volume, but does not cause icing.
Is it possible to use a refrigerator if it is covered in ice?
Operate the unit Not recommended with a large coat of snow. Ice has thermal insulating properties, causing the compressor to run longer and more often in an attempt to build up the temperature. This leads to overheating of the motor and increased energy consumption. In addition, ice can damage food and packaging.
How often do you need to defrost the Atlant No Frost refrigerator?
The system No Frost does not require regular defrosting to remove ice, as it does this automatically. However, sanitary defrosting and washing are recommended to be carried out 1-2 times a year. This will help clean the drainage, remove odors and check the condition of the seals.