The appearance of a snow coat or a thick layer of ice on the rear inner wall of the refrigerator compartment is a common complaint from equipment owners Atlant. Many users mistakenly believe that this is a manufacturing defect or a fatal breakdown requiring expensive repairs. However, in most cases, the situation is explainable from the point of view of the physics of the compressor and the moisture removal system.
Refrigerators with a drip defrosting system, which include most models Atlant, operate cyclically. An evaporator located behind the rear panel cools the chamber, causing moisture in the air to condense on the coldest surface. In normal mode, this water flows into the drainage hole without having time to freeze. Violation of this balance leads to the formation of ice.
In this material we will analyze in detail the mechanics of ice formation, analyze typical operating errors and identify technical faults. Understanding the principle of operation will help you diagnose the problem yourself and avoid calling a specialist where you can handle it on your own.
The principle of operation of the drip defrosting system
To understand why it appears ice crust, you need to remember the physics of the process. In refrigerators Atlant with manual or drip defrosting, the main heat exchanger (evaporator) is hidden behind a plastic panel on the back wall. When the compressor is running, the evaporator temperature drops well below zero. At this moment, the moisture contained in the chamber air and products turns into frost on the surface of the evaporator.
When the thermostat detects that the set temperature has been reached, it turns off the compressor. The evaporator begins to heat up and the accumulated frost melts. The resulting drops of water flow down along the ribbed surface of the rear wall, falling into the groove and leaving through drainage hole into the tray above the motor, where they safely evaporate. This cycle repeats constantly.
The problem occurs when the cycle is broken. If the water does not have time to drain or there is too much of it, it freezes right on the wall or at the entrance to the drain. Gradually, this layer grows, turning into a massive piece of ice, which can prevent the door from closing or even damage the food.
Why is the ice in the back?
The back wall is the coldest place in the chamber, since the evaporator is located behind it. This is where maximum moisture condensation occurs.
Operating errors: human factor
Before looking for a breakdown cooling system, it is worth analyzing your habits. Often the cause of freezing is a banal violation of the rules for using equipment. The refrigerator Atlant is sensitive to temperature changes and the tightness of the circuit.
One of the main reasons is the loose fit of the door. If the sealing rubber is dirty, torn or simply worn out, warm air from the kitchen constantly flows inside. The moisture in this air instantly freezes on the back wall, forming loose snow or dense ice. Also, the door may not close completely due to skewed hinges or if the dishes were placed incorrectly and they interfere with closing.
The second common factor is placing hot or warm food in the chamber. The evaporator cannot cope with sudden changes in temperature and humidity. The water does not have time to evaporate through the drainage and crystallizes on the walls. In addition, open containers with liquid (soups, compotes) without lids saturate the air with steam, which immediately settles with frost.
- ❄️ Products are stored without lids or packaging, which increases humidity.
- ❄️ The refrigerator door often opens or remains open for a long time.
- ❄️ Hot dishes that have not cooled down to room temperature are placed in the chamber.
- ❄️ The sealing rubber is dirty with crumbs or damaged.
Technical faults and their symptoms
If everything is in order with the operating mode, and the ice continues to grow, it is probably covered. technical malfunction. Refrigerators Atlant have several components, the failure of which leads to similar symptoms. It is important to correctly diagnose the problem so as not to change serviceable parts.
Most often the thermostat is to blame. If it is “stuck” in the “on” position, the compressor runs without stopping. The back wall freezes through, turning into an ice monolith. In this case, the food in the main part of the chamber may freeze, and a thick fur coat adorns the wall. Another option is a malfunction of the defrost sensor (in electronically controlled models), which does not give a signal to stop the compressor for defrosting.
It is also worth paying attention to the refrigerant. If a micro-leakage of freon occurs in the system, the compressor tries to compensate for the lack of cold by operating in continuous mode. This leads to severe freezing of the evaporator, which can also cover part of the rear wall of the chamber. This can be determined by touch: the back wall may be cold unevenly.
Problems with the drainage system
Clogged drainage channel is one of the most common reasons why water does not drain away, but freezes, forming a “lake” at the bottom of the chamber or sticking to the wall. Food particles, crumbs, mold or mucus get into the drainage hole, which over time creates a plug.
When the drain is blocked, melt water during the defrost cycle cannot go into the tray. It remains in the groove and freezes during the next compressor cycle. Over time, the ice plug grows and completely blocks the outlet, causing water to overflow over the edge of the groove and freeze on the shelves or bottom of the refrigerator.
For cleaning, you can use a special flexible brush-brush (often included) or soft wire. It is important to act carefully so as not to puncture the wall of the channel leading to the engine compartment. After mechanical cleaning, it is recommended to rinse the canal with warm water from a syringe or rubber bulb.
☑️ Cleaning the drainage hole
Comparison of Atlant models: where ice most often occurs
Different series of refrigerators Atlant have their own design features. Some models are more prone to ice formation due to the location of the evaporator or the type of control. Below is a table that helps classify the risk of a problem.
| Series / Type | Defrost system | Risk of ice | Typical cause |
|---|---|---|---|
| Classic (single-compressor) | Drip | High | Drainage clogged, seal wear |
| No Frost (double-chamber) | Automatic | Low | Faulty defrost heating element or fan |
| Budget models | Manual / Drip | Average | Frequent opening, lack of precise electronics |
| Electronically controlled series | Drip + Smart | Low | Temperature sensor failure or board |
It is worth noting that even in models No Frost, where there should be no ice in the refrigerator compartment by definition, the appearance of ice on the back wall indicates a serious failure in the defrosting system of the evaporator, which is located in the freezer compartment or behind the panel.
⚠️ Attention: In models with the No Frost system, the appearance of ice on the back wall of the refrigerator compartment is absolutely not normal. This indicates that the fan is not moving air or the air supply channels are clogged with ice.
Instructions for defrosting and removing ice
If you find ice, do not try to pick it off with a knife or other sharp objects. This can damage the evaporator and leak freon, turning a simple repair into an expensive circuit replacement. Proceed consistently and safely.
First, you must completely defrost the unit. Unplug the refrigerator, remove all food and leave the doors open for at least 12-24 hours. The ice should melt naturally. You can speed up the process with a hairdryer, but be careful not to melt the plastic case. Atlant from the mains, remove all food and leave the doors open for at least 12–24 hours. The ice should melt naturally. You can speed up the process with a hairdryer, but be careful not to melt the plastic case.
After defrosting, thoroughly wipe the inner chamber with a dry rag. Pay special attention to the drainage hole - make sure that water flows out freely. If after turning on the problem recurs after 1-2 days, then the reason is not a one-time error, but a malfunction.
When you need to call a specialist
There are a number of symptoms in which self-repair is not only ineffective, but also dangerous. If you have checked the seals, cleaned the drainage and defrosted the equipment correctly, but the ice returns, professional diagnostics are required.
An alarming signal is a change in the sound of the compressor. If it starts to work louder, with a metallic clanging sound, or, conversely, turns on and off too often (clocking), these are signs of problems with the motor or start relay. A technician is also needed if the outside rear wall (on the motor side) is covered with frost or rust - this is a sign of a leak.
Replacing the thermostat, refilling with freon or repairing the electronic control module requires special tools and skills. An attempt to do this without experience can lead to complete failure of the equipment.
⚠️ Attention: If you smell burnt wiring or see sparking in the area of the thermostat, immediately unplug the refrigerator from the power supply and do not turn it on until a specialist arrives.
Prevention of ice formation
For your Atlant to serve for a long time and delight you with a clean back wall, it is enough to follow simple rules of prevention. Regular maintenance takes a little time, but saves you from serious damage.
Check the condition of the sealing gum every six months. Wipe it with a soft cloth soaked in a mild soap solution and lubricate it with silicone grease if it begins to tan. Make sure that shelves and food do not interfere with the door closing tightly.
It is also recommended to completely defrost it once a year, even if there is no visible ice. This will help clear hidden cavities from accumulated moisture and prevent the formation of stagnant zones. Use high-quality containers for storing food to minimize the release of moisture.
Is it possible to wash the back wall?
You can wash the inner plastic panel, but avoid getting large amounts of water into the technical openings and electrical contacts if they are located inside the chamber.
Why does ice appear only in the upper part of the back walls?
This is typical for a violation of air circulation or a local leak of warm air from above. Often the problem lies in the deformation of the seal at the top of the door or in the fact that the products on the top shelf lie too close to the wall, blocking the flow of heat.
Is it normal for the back wall to become covered with frost during operation?
The short-term appearance of frosty frost during operation of the compressor is normal for a drip system. It should disappear when the engine stops. If frost turns into a thick layer of snow that does not melt, this is a pathology.
How often do you need to defrost an Atlant refrigerator with a drip system?
The manufacturer recommends complete defrosting and washing at least once a year. However, if the humidity in the room is high or the refrigerator is often opened, this can be done once every 6 months for prevention.
Can ice be caused by power surges in the network?
Yes, unstable voltage can lead to malfunctions of the electronic control module or thermostat. If the relay “sticks” due to a surge, the compressor may not turn off, which will lead to freezing and icing.
What to do if the drainage hole is completely frozen?
Do not pick at the ice with sharp objects. Pour some warm (not boiling water!) water into the hole and wait a few minutes. The ice will melt and you can clean the channel with a brush. For prevention, you can use a weak saline solution.