Detection of an ice crust or massive ice on the back wall of the refrigeration chamber is a signal that equipment owners cannot ignore Atlant. Two-chamber models equipped with a No Frost or drip defrosting system should not allow ice to form on the internal surfaces during normal operation. The appearance of snow or blocks of ice indicates a violation of the temperature regime or the tightness of the circuit.
Ignoring this problem can lead to failure of the compressor, which will begin to wear out, trying to compensate for the loss of cold. In addition, products can spoil due to temperature changes or mechanical damage to the packaging due to sharp ice. It is important to quickly diagnose the source of the malfunction in order to prevent expensive repairs.
In this article we will analyze in detail the mechanics of ice formation in various models of the Belarusian brand. We will look at both simple settings that you can check yourself, and complex technical faults that require specialist intervention. Understanding the principles of operation of your model will help save time and money.
The principle of operation of the moisture and cold removal system
To understand the causes of icing, you need to understand how it functions evaporator in two-chamber Atlant refrigerators. In models with a drip system, moisture condenses on the back wall, freezes in a thin layer, and then flows into the drainage hole when the compressor is turned off. If this cycle is disrupted, the water does not have time to evaporate or drain, forming an ice build-up.
In devices with technology No Frost (or Full No Frost), the process is organized differently: the evaporator is hidden behind a plastic panel, and cold air is pumped by a fan. The back wall in such models should not be covered with frost at all, since it is only a heat-insulated partition. The appearance of ice here indicates that cold air is getting where it shouldn't be, or the defrost system is not working.
The key element is the tightness of the circuit. If warm air from the outside containing moisture gets inside the chamber, the cooling system tries to cool it, turning the moisture into frost. Air circulation this is broken, and ice begins to grow layer by layer, blocking the ventilation ducts.
What is the difference between a weeping system and a No Frost?
In refrigerators with a drip system (“crying back wall”), the back wall is periodically covered with frost, which melts. In No Frost there should be no frost on the walls at all, since the evaporator is located separately.
Incorrect temperature setting
One of the most common and easily eliminated reasons is a banal error in the settings. Users often set the temperature in the refrigerator compartment too low, thinking that the food will last longer. However, for most models Atlant the optimal range is from +2 to +5 degrees Celsius.
If you set the "Super Cool" mode or the minimum temperature (for example, +1°C) on a constant basis, the compressor works almost non-stop. The back wall is supercooled, and moisture from the air instantly crystallizes, without having time to flow into the drainage. This is especially true in the summer or when there is high humidity in the room.
It is also worth checking the operation of the thermostat. If it is faulty, it may not signal the compressor to turn off even when the set temperature has been reached. As a result, the refrigerator “freezes” endlessly, turning the chamber into a freezer with all the ensuing consequences in the form of ice blocks.
⚠️ Attention: Long-term operation of the compressor without rest cycles leads to overheating of the windings and a reduction in engine life. Do not keep the refrigerator in maximum freezing mode unless necessary.
Problems with the door seal and tightness
A leak in the refrigerator compartment is an “open door” for icing problems. If the rubber seal door is worn out, dirty or deformed, warm, moist air constantly flows inside. When encountering cold, this air instantly turns into frost on the coldest surfaces, that is, on the back wall.
Checking the tightness can be carried out using a simple method using a sheet of paper. Press the door around the perimeter of the sheet and try to pull it out. If the paper comes out easily without resistance, it means that the seal does not fit tightly in this place. Also inspect the rubber for cracks, tears or sticky deposits that prevent it from closing tightly.
Often the problem lies not in the rubber itself, but in the misalignment of the door. If the refrigerator is not level or the hinges are sagging due to the weight of the food, the door will not close tightly. In such cases, even a new seal will not save the situation - you will need to adjust the position of the door or replace the hinges.
- 🧹 Wash the seal thoroughly with warm water and soap to remove grease and sticky deposits, improving the fit.
- 🔥 If the rubber has simply lost its elasticity, try gently warming it with a hairdryer (not overheating!) or treat with silicone grease.
- 🚪 Check whether food or dishes are preventing the refrigerator door from closing tightly.
Malfunctions of the defrost system (for No Frost models)
In refrigerators Atlant with the No Frost system, the evaporator is hidden behind the rear plastic panel. Frost also forms on it, but it is removed automatically by the defrosting system. If this mechanism fails, the evaporator becomes covered with ice, which blocks the air supply channels. The cold stops circulating normally and begins to freeze in the refrigerator compartment, including on the back wall.
The main culprits here are Defrost heating element, the defrost thermostat or timer (electronic module). The heating element may burn out and stop heating, the thermostat may not close the circuit, and the timer may not give a command to turn on the defrost mode. As a result, ice accumulates and eventually breaks through into the chamber.
Diagnostics of these elements requires disassembling the back panel in the freezer and using a multimeter to test the circuits. You can do this yourself, but you need to be careful and have basic knowledge of electrical engineering. You can often visually notice that the fan does not spin due to icing or that there is a block of ice under the evaporator.
☑️ Symptoms of a broken defrost system
Clogged drainage hole
In models with a drip moisture removal system, the condition of the drainage channel is critically important. This hole is located at the bottom of the rear wall of the refrigerator compartment. Through it, the condensate flows into a tray above the compressor, where it evaporates. If this hole becomes clogged with crumbs, mold or ice, the water has nowhere to go and it freezes, forming a snowdrift.
You cannot use sharp metal objects to clean the channel, as you can damage the tube or pierce the wall of the refrigerator, releasing freon. It is best to use a special soft brush (often included) or a long flexible wire with a blunt end.
An effective method is to rinse the canal with warm water using a medical bulb or syringe without a needle. Water should flow freely into the drainage. If the water is standing, then the blockage is deep and requires careful mechanical cleaning from above or blowing.
| Symptom | Probable cause | Solution method |
|---|---|---|
| Ice only at the bottom of the back wall | Clogged drainage | Cleaning the channel |
| Ice evenly over the entire wall | Faulty sensors/heating element | Electrical diagnostics |
| Ice coat on one side | Door seal failure | Replacing the seal |
| Ice and water on the floor | The tray is displaced or clogged drainage | Checking the tray and tube |
Refrigerant leakage and problems with the compressor
More serious technical problems are associated with malfunction of the refrigeration circuit. If there is a freon leak in the system, the refrigerator may hum, but not freeze properly, while a local ice build-up may form on the evaporator (often at the leak site), which then spreads into the chamber. No Frost If there is a freon leak, the refrigerator may hum, but not freeze properly, and a local ice build-up may form on the evaporator (often at the leak site), which then spreads into the chamber.
It is also worth mentioning the “crying” evaporator. If there is little freon, the compressor works longer, trying to gain temperature. This results in deep freezing of the posterior wall. It is difficult to determine a leak visually; a technician with a leak detector is often required. A characteristic sign may be that the condenser (grid at the back) is only partially hot or, conversely, cold.
In some cases, the problem lies in the compressor itself or the mode switching valve (if there is one). However, more often than not, icing is still a temperature control or sealing problem rather than a mechanical failure of the motor. But if after defrosting and checking the seal the problem returns after 1-2 days, you should call a specialist.
⚠️ Attention: Self-filling the refrigerator with freon is prohibited and dangerous. To restore the tightness of the circuit, special equipment and a license are required.
Algorithm of actions when ice is detected
If you If you notice that the back wall of yours is freezing, do not rush to call a repairman right away. Start with simple steps that can often solve the problem at no cost. The first step is to completely defrost the refrigerator. Atlanta the back wall is freezing, do not rush to call a repairman right away. Start with simple steps that can often solve the problem at no cost. The first step is to completely defrost the refrigerator.
Unplug the device, remove all food and leave the doors open for at least 24 hours. This is necessary so that all the ice, including that hidden in the channels and behind the panels, completely melts. Simply scraping off the visible ice with a knife is not enough - the system must warm up completely.
After defrosting, turn on the refrigerator empty and let it reach the temperature. If ice does not appear within a day or two, then the problem was overload or infrequent defrosting. If ice appears again, look for the reason in the list above, starting with checking the seal and temperature conditions.
☑️ Action plan for icing
When you need to call a specialist
There are a number situations where independent repair is not only useless, but can also harm the equipment. If you checked the seal, cleaned the drainage, set the correct temperature and did a complete defrost, but ice continues to grow - the problem is in the electronics or hidden components.
A specialist will be needed to replace the defrost heating element, thermostat, timer or control module. A technician is also needed to find freon leaks and refill the system. These works require professional tools, knowledge of electrical circuits of specific models Atlant and compliance with safety precautions.
You should not delay contacting service if you notice that the compressor is working without interruptions, is heating up, or is making strange sounds. Timely repair of the sensor can save the compressor from combustion, which will be much cheaper.
Is it possible to operate a refrigerator with ice on the wall?
Short-term operation is possible, but undesirable. Ice impairs heat transfer, the compressor works at the limit, which leads to its breakdown. In addition, ice can damage food.
How long should it take to defrost an Atlant refrigerator?
For complete thawing of hidden cavities and the evaporator (especially in No Frost) a minimum of 24 hours is required. The minimum time is 12 hours, but it may not be enough for deep defrosting.
Why does ice freeze on only one side of the back wall?
Most often this indicates a loose fit of the door on the side where the ice freezes, or a misalignment of the refrigerator itself. It is also possible that air can leak through a microcrack in the seal.
Is it necessary to defrost a No Frost refrigerator?
Technically, the No Frost system does not require defrosting. However, manufacturers recommend doing preventive defrosting once a year for hygiene and checking the operation of the system, especially if there is an odor or moisture in the chamber.
What to do if the drainage hole is frozen?
Do not pick it with a knife or screwdriver. You need to pour some warm (not boiling water!) water in there and wait until the ice melts. Then clean with a brush or soft wire.