The appearance of snow a fur coat or ice crust on the back wall of the refrigerator compartment is a signal that cannot be ignored. Owners of equipment Atlant often encounter the fact that a unit that has worked for years without complaints suddenly begins to intensively become overgrown with ice. This is not just an aesthetic defect, but a sign of a malfunction of the cooling system or the tightness of the circuit.
In modern models, even those equipped with a system No Frost for the freezer, a drip defrosting system is often used in the refrigerator compartment. If you notice that the ice does not have time to flow into the drainage and turns into a snowdrift, it means that the temperature balance is disturbed. The compressor can work in increased mode, trying to compensate for cold leakage or sensor errors.
In this article we will analyze in detail the mechanics of ice formation in technology Atlant. You will learn how to distinguish normal operation from a breakdown, and what actions need to be taken immediately to avoid costly compressor repairs.
⚠️ Attention: Operating the refrigerator with a thick layer of ice on the evaporator can lead to deformation of the plastic panels and damage to the heat exchanger tubes when attempting mechanical cleaning.
Principle operation of a drip defrosting system
To understand the nature of the problem, you need to understand the physics of the process. In refrigerators Atlant with a drip system, the rear wall of the refrigerator compartment is directly the evaporator. During operation of the compressor, it is cooled to negative temperatures, due to which the moisture contained in the air of the chamber condenses on it and freezes, forming a thin layer of frost.
When the temperature reaches the set value, the thermostat opens the circuit and the compressor turns off. At this moment, the wall begins to heat up, the ice melts, and the resulting water flows down the groove into the drainage hole. Drip system it is designed that the cooling cycle and the defrosting cycle are strictly balanced. If this balance is upset, the water does not have time to evaporate or drain, turning into an ice block.
Unlike systems No Frost, where a fan drives dry air, here the humidity inside the chamber is high. This is why opening doors is critical. The frequent flow of warm, humid air from the room creates excess load on the evaporator. The system simply does not have time to utilize all the incoming moisture in normal mode.
Natural causes of ice formation
The appearance of snow does not always indicate a breakdown. There are a number of everyday factors that can provoke active ice growth. First of all, you should pay attention to the tightness of the circuit. If the door does not fit tightly, warm air constantly enters. Check sealing rubber for cracks, creases or dirt.
The second common reason is the placement of products. If you place hot or warm food inside the chamber, there will be a sudden jump in humidity. Also, do not densely fill the shelves with products to the very top. Air must circulate freely around the evaporator so that the system can effectively remove heat and moisture.
- ❄️ Violation of the temperature regime: setting the regulator to maximum cooling causes the compressor to work almost non-stop, preventing the ice from melting.
- 🚪 Seal defect: microcracks or door movement are allowed through humid air that instantly crystallizes on a cold wall.
- 🍲 Hot foods: evaporation of moisture from warm dishes creates excess condensation, which the drainage system does not have time to remove.
It is also worth checking whether the unit itself is displaced. If the refrigerator is not level, the door may not close completely on its own. In models Atlant with a bottom location of the freezer compartment, this is especially important, since the upper door is heavier and if the case is skewed, the tightness is broken faster.
Technical malfunctions and breakdowns
If domestic reasons are excluded, but the snow continues increase, we are talking about a technical malfunction. One of the common problems in refrigerators is the failure of the temperature sensor. If the sensor “lies” and shows that the chamber is warmer than it actually is, the compressor will work continuously. The back wall will freeze through, turning into a monolithic piece of ice. Atlant is a failure thermostat or temperature sensor. If the sensor “lies” and shows that the chamber is warmer than it actually is, the compressor will work continuously. The back wall will freeze through, turning into a monolithic piece of ice.
Another possible reason is a refrigerant (freon) leak. If there is a lack of freon in the system, the boiling and condensation cycle is disrupted. The compressor tries to compensate for the lack of cold, working for wear. As a result, the rear wall may be covered with an uneven layer of snow, often on one side, or ice forms only in the upper part of the evaporator.
Hidden problems with sensors
In modern Atlant models with electronic control, the cause may be a failure in the control module. It incorrectly reads sensor readings and sends incorrect commands to the compressor, ignoring the real temperature inside the chamber.
Clogged drainage system is another “technical” culprit. If the water drain hole is clogged with crumbs, mold or ice, the melt water will not flow into the tray above the compressor. It remains at the bottom of the chamber, freezes, and this ice gradually grows upward, capturing the back wall. Visually, it looks like a snowdrift at the foot of the rear panel.
⚠️ Attention: If you hear that the compressor has been running non-stop for several hours, and the temperature in the chamber does not drop below -5°C, there is a high probability of a freon leak or capillary tube blockage.
Diagnostics of the evaporator condition and sensors
To accurately determine the cause, it is necessary to conduct a primary diagnosis. In refrigerators Atlant access to the main components often requires partial disassembly, but initial measurements can be made without tools. Pay attention to the nature of icing. A uniform layer over the entire wall often indicates problems with the seal or thermostat. Local ice dams indicate local cold leaks or problems with circulation.
Checking a mechanical thermostat is done by temporarily removing it from the circuit or testing it with a tester. In electronic models Atlant with a display, you can often read the error code, which will indicate a faulty sensor. For example, errors related to the temperature of the evaporator will immediately direct attention to the sensors mounted on the rear wall.
Pay special attention to the condition of the evaporator itself. If, after completely defrosting and turning on the refrigerator, the wall begins to become covered with frost unevenly (for example, only on top or only on one side), this is a sure sign freon leaks or a blockage in the circulation system. In a working refrigerator, cooling should be distributed evenly.
Proper defrosting of the Atlant refrigerator
If you find that the layer of snow has already reached a significant thickness (more than 5-7 mm), it is necessary to carry out complete defrosting. This is the simplest and often the only way to restore normal operation without calling a technician. The main rule: do not use sharp objects for chipping ice. Damage to the evaporator tubes will lead to immediate release of freon and costly repairs.
The process should be natural. Unplug the refrigerator, open the doors and leave it for 10-12 hours (preferably overnight). Remove all products. Place rags or containers to catch water that flows from the drainage hole. You can speed up the process with a hairdryer, but be careful not to melt the plastic parts.
☑️ Algorithm for proper defrosting
After all the ice has melted, be sure to blow out the drainage hole. You can use a soft straw or bulb to clean your ears. Pour some warm water in there to make sure it flows freely into the drip tray above the compressor. Only after this the refrigerator can be plugged in.
Comparison of operating modes and energy consumption
The presence of snow on the back wall directly affects energy consumption. A thick layer of ice acts as a heat insulator, preventing effective heat transfer. The compressor has to work longer to cool the chamber volume, which leads to higher electricity bills and a reduction in motor life.
The table below compares the state of the system during normal operation and in the presence of a malfunction causing icing.
| Parameter | Normal operation | When snow forms |
|---|---|---|
| Compressor operating cycle | Periodic on and off | Work without stopping or very long cycles |
| Condition of the rear wall | Uniform thin frost or drops of water | Thick layer of ice or snowdrifts |
| Temperature in the chamber | Stable, corresponds to the settings | May be below normal or unstable |
| Electricity consumption | Within the passport data | Significantly above the norm (up to 30-40%) |
As can be seen from the table, ignoring the problem leads to economic losses. A layer of ice 1 cm thick increases the energy consumption of the refrigerator by about 15-20%. Therefore, regularly checking the condition of the back wall is not only a matter of food safety, but also a matter of saving the budget.
Prevention and care of the cooling system
To prevent problems with snow the back wall of the refrigerator Atlant has not been returned, you must follow simple operating rules. Inspect the rubber seal regularly, at least once every six months. Wipe it with a soft cloth soaked in a mild soap solution to remove grease and dirt, which reduce the elasticity of the rubber.
Watch the temperature. Do not set the controller to maximum cooling unless absolutely necessary. For basic food storage, a temperature of +4...+5°C is sufficient. In winter, if the refrigerator is located in an unheated room, make sure that the model is adapted to operate at low ambient temperatures.
- 🧼 Regularly wash the drainage hole with warm water to prevent the formation of plugs from mold and dirt.
- 🌡️ Do not place the refrigerator next to heating appliances or under direct lines. sunlight, this disrupts heat exchange.
- 🥘 Let the dishes cool to room temperature before putting them in the refrigerator.
Following these recommendations will extend the life of your refrigerator Atlant and keep its energy efficiency at a high level. If, despite all preventive measures, snow continues to appear, do not delay calling a specialist for an in-depth diagnosis.
Why does snow appear only after the door is opened?
This is a classic sign of high humidity in the room or opening the door too often. Warm air hitting the cold evaporator instantly condenses. If snow appears precisely at these moments and melts quickly, this is the norm for a drip system. If it grows and does not melt, check the seal.
Is it possible to scrape off the ice with a knife?
It is absolutely not possible. The evaporator tubes in Atlant refrigerators are located very close to the surface of the rear wall. One careless blow will lead to a puncture, release of freon and the need for complex repairs with sealing of pipes and refilling of refrigerant.
Does the amount of products affect the formation of ice?
Yes, it does. A jam-packed refrigerator is less ventilated. Cool air should circulate around the food. If the shelves are packed tightly to the back wall, the cold is not distributed evenly, the sensors do not work correctly, which can lead to local freezing and the formation of snow caps.