The appearance of a snow coat or ice crust on the rear inner panel of the refrigerator compartment is a common problem faced by owners of equipment Atlant. Many users notice that food begins to freeze to the wall, and the usable space is reduced due to ice. In most cases, this does not mean a breakdown of the unit, but is a consequence of violation of the operating rules or operation of the auto-defrosting system.
Atlant refrigerators, especially models with a system Atlant, especially models with the system No Frost or drip defrosting, are designed to minimize the formation of ice. However, the physics of the processes of evaporation and condensation of moisture does not go away. If you see that the back wall is covered with frost, you need to quickly identify the cause. Ignoring the problem can lead to overload of the compressor and failure of expensive components.
In this article we will analyze in detail the technical and household causes of freezing, and also give step-by-step instructions for troubleshooting. You will learn to distinguish the normal operation of the unit from a serious breakdown that requires the intervention of a technician.
⚠️ Attention: Carry out any manipulations to defrost or check electrical circuits only after completely disconnecting the refrigerator from the power supply. Failure to comply with safety precautions can lead to electric shock.
The principle of operation of the cooling system and natural condensation
To understand the nature of the appearance of ice, you need to understand the physics of the process. In refrigerators Atlant with a drip system (crying evaporator), the back wall is directly the cooling element. While the compressor is operating, the temperature on this panel drops significantly below zero. The moisture contained in the chamber air settles on the cold surface in the form of condensation.
When the cooling cycle ends and the compressor turns off, the wall heats up. The accumulated condensate turns into water and flows into a special groove, from where it goes through the drainage hole into a container above the motor. This cycle repeats itself constantly. If you see a thin film of frost or individual droplets of water, this is normal operation technicians.
Problems begin when the ice cover becomes too thick and does not have time to melt during downtime. This may be due to the motor running too long or not taking enough time to defrost. It is also important to consider that in models with No Frost ice should not form on the back wall at all, since forced air circulation is used there.
Users often confuse normal condensation with pathology. If the refrigerator is new or has just been defrosted, it may take some time for the first layer of ice to form. The system should enter a working rhythm. However, if the “fur coat” grows quickly and interferes with closing the shelves, you should look for a malfunction.
Violation of operating rules: common user mistakes
The most common reason why the back wall freezes lies not in the breakdown of parts, but in the actions of the owner. The human factor accounts for more than 60% of all calls regarding freezing. Often we ourselves create conditions under which the moisture removal system cannot cope with the volume of incoming liquid.
One of the main mistakes is placing warm or hot products in the chamber. If you put a pot of soup in the refrigerator, the cooling system begins to work hard, trying to reduce the temperature. At this moment, a huge amount of condensation forms on the back wall, which simply does not have time to drain and instantly freezes, forming a thick layer of ice.
Another critical point is the loose fit of the door. If the sealing rubber worn outis dirty or deformed, warm air from the room constantly enters the chamber. The humidity in the room is high, and this air, getting inside, gives off its moisture to the cold wall. Ice builds up very quickly, sometimes blocking access to products.
It is also worth mentioning the storage of liquids in open containers. Evaporation of water from pots, bottles and containers significantly increases the humidity inside the chamber. The system drip defrosting simply does not have time to utilize such a volume of moisture. It is recommended to always cover liquids with lids or use cling film.
⚠️ Attention: Never try to remove frozen food or ice with a knife or other sharp objects. You can break the evaporator and the refrigerator will stop freezing forever. Use only warm water for defrosting.
Problems with sealing rubber and tightness
The tightness of the refrigeration chamber is the foundation for proper operation Atlant. The rubber seal located around the perimeter of the door is responsible for isolating the internal space from the external environment. Over time, rubber loses elasticity, cracks or deforms. Warm air begins to penetrate into the resulting cracks.
You can check the tightness in a simple folk way. Take a piece of paper, open the door slightly and secure the sheet with a rubber band. Run the sheet around the entire perimeter. Where the rubber band fits well, the paper will move with difficulty or get stuck. If the sheet slides freely, the seal is broken in this place, and it is there that moisture enters to form ice on the back wall.
Often the problem is solved by simple cleaning. Fat and crumbs accumulate on the elastic, which prevents a tight fit. Wipe the seal with a soft sponge and soapy water. If the rubber is torn or very hardened, it must be replaced. For models Atlant you can find original spare parts or high-quality analogues.
Sometimes the door warps due to improper installation or loose hinges. In this case, even a new rubber band will not provide a tight seal. It is necessary to adjust the position of the doors by tightening the fasteners. Also check if anything is preventing it from sealing tightly: an overhanging shelf, a tall bag or a bottle on the edge.
☑️ Diagnosis of the seal
Malfunctions of the thermostat and temperature sensors
If with tightness and rules operation everything is in order, the reason may be hidden in the electronics. Thermoregulator (thermostat) is a device that commands the compressor to turn on or off depending on the temperature inside the chamber. If this sensor fails, it can “lie” to the control system.
If the thermostat breaks down, the refrigerator can work without interruption, trying to cool the chamber to a non-existent ultra-low degree. The compressor hums constantly, the back wall freezes through, and a thick layer of ice grows on it. In this case, products can freeze even at the back wall, which is unacceptable for the refrigerator compartment.
In models with electronic control, sensors No Frost or the evaporator are responsible for the temperature. If the defrost sensor is faulty, the system may not start the defrost cycle on time. Ice accumulates on the evaporator (which is often hidden behind the back wall), and over time begins to protrude into the chamber or block the air circulation channels.
Diagnostics of the thermostat at home is difficult, but possible. You can try temporarily unplugging the refrigerator and defrosting it. If, after turning it on, it works in normal mode for some time, and then again starts to freeze endlessly, there is likely a problem with the sensor or control board. In such cases, it is often necessary to replace thermostat or the module.
Clogged drainage system: where does the water go?
One of the most common technical reasons for the formation of ice plugs is a clogged drainage hole. This small hole is located at the bottom of the rear wall of the refrigerator compartment. Through it, water from the condensate flows into a tray above the compressor, where it safely evaporates.
Over time, crumbs, food particles, mold or mucus get into the drainage. The hole becomes clogged and the water has nowhere to drain. It accumulates in the groove and freezes, forming an ice plug. The new moisture also freezes, and the ice begins to grow up the back wall, taking over more and more space.
You don't need to be a master to fix this problem. You will need:
- 💧 Warm water in a syringe or syringe without a needle.
- 🧹 Thin flexible wire or a special brush for cleaning.
- 🧽 Dry rag or paper towels.
Carefully clean the hole with wire, being careful not to damage the inner walls of the channel. Then rinse it with warm water. If the water flows freely with a “gurgle” sound, then the system is free. Regular drainage maintenance will help avoid the formation of ice build-up in the future.
What to do if the water does not drain away after cleaning?
If mechanical cleaning does not help, an ice plug may have formed deep in the channel. In this case, you can carefully pour a little warm (not hot!) water into the hole and wait 10-15 minutes until the ice inside melts. Repeat the washing procedure.
Comparison of problems: Drip system versus No Frost
Owners of different models Atlant face different manifestations of the problem. Understanding the type of cooling system you have will help you get to the root of the problem faster. The fundamental difference in design also dictates different diagnostic methods.
The table below shows the main differences in the symptoms and causes of freezing for two types of systems:
| Parameter | Drip system (Direct Cool) | System No Frost |
|---|---|---|
| Place of ice formation | Rear wall of the refrigerator compartment | Rear wall of the freezer compartment (hidden) |
| Cause | Excess moisture, bad tightness | Malfunction of the defrost heating element, timer or sensor |
| Symptom | Ice is immediately visible, water on the shelves | The refrigerator does not freeze well, water is at the bottom of the chamber |
| Solution | Cleaning the drainage, checking the seal | Replacing the heating element, repairing the defrost system |
In systems No Frost ice in the refrigerator compartment should not appear on the walls at all. If you see frost there, it is a sign that the cold air from the freezer is not flowing correctly or the circulation is poor. This is often due to the fact that the evaporator in the freezer is completely clogged with ice due to a failure of the defrosting system, and air simply cannot pass through the channels.
For models Atlant with No Frost the problem of failure of the defrosting heating element is typical. It stops heating and melting ice on the evaporator during a pause. As a result, the fan may even stop when it hits an icy mass. Complex diagnostics with a multimeter is required.
Action algorithm: defrosting and checking
If you find ice, the first step is to carry out a complete defrosting. This is a basic procedure that allows the system to “rest” and often eliminates false sensor failures. Do not try to scrape off the ice - set aside at least 10-12 hours for this process (preferably overnight).
The procedure should be as follows:
- Unplug the refrigerator.
- Empty the chambers of food.
- Open the doors and leave the equipment to defrost.
- Set containers to collect melting water or use rags.
- After defrosting, wipe all surfaces dry.
After turning on the refrigerator, let it run idle for about 2 hours. During this time, it should gain temperature and turn off. If the compressor turns off and ice no longer appears within 24 hours, the problem was an overload or a single failure. If the situation repeats, you need to look for a fault in the components.
It is also important to check at what level the temperature regulator is set. For summer and winter, modes may differ. Setting the temperature too low (maximum cold) in a warm room is guaranteed to lead to freezing of the back wall.
Can a hair dryer be used to speed up defrosting?
Using a hair dryer is acceptable, but with great caution. Do not direct the hot jet directly at plastic or rubber seals to avoid deforming them. Also avoid getting water from melting ice on electrical parts. It is better to let the ice melt naturally, it is safer for the heat exchanger.
Why did the ice appear again after 2 days after defrosting?
This indicates a systemic problem. Most likely, the root cause has not been eliminated: either warm air continues to be sucked in through the seal, or the drainage is clogged, or the thermostat is faulty. Defrosting is a temporary measure, not a treatment for a disease.
Do you need to call a technician if the refrigerator is old?
If the refrigerator is more than 10-12 years old, repairs may not be economically feasible if the compressor needs to be replaced or the circuit sealed. However, replacing the seal, thermostat or cleaning the drainage are inexpensive procedures that can extend the life of equipment Atlant for several more years.
Does the amount of food affect the formation of ice?
Yes, it does. A refrigerator that is too full interferes with air circulation (especially in No Frost), and a refrigerator that is too empty leads to frequent starts of the compressor, since a small volume of air quickly heats up when the door is opened. The optimal load is about 70% of the volume.
What to do if the back wall is swollen?
Bloating of the back wall (usually in the upper part) is a sign of corrosion of the evaporator sealed in the housing. This is a serious problem, often requiring the installation of an external evaporator ("weeper") or replacement of the refrigerator. You can’t fix this on your own.