Detection of an ice crust or a snow coat on the inner surface of the refrigeration chamber is an alarming signal that cannot be ignored by equipment owners Atlant. Unlike No Frost systems, where ice forms in a hidden evaporator, in models with a drip defrosting system, the appearance of ice on the back wall indicates a violation of heat exchange or the tightness of the circuit. If you notice that food is freezing to the shelves, and the door has become worse at closing, it means that the process of moisture crystallization is out of control of the automation.
The first thing you need to understand: in a working refrigerator, the moisture settling on the cold back panel should turn into droplets of water and flow into the drainage gutter. When a monolithic layer of ice forms instead, this means that the wall temperature is too low or the moisture does not have time to drain, freezing faster than the cycle requires. Ignoring this problem can lead to compressor failure due to constant operation at the limit, trying to compensate for the disturbed temperature regime.
Diagnostics begins with a visual inspection of the nature of icing. Ice can cover the entire surface evenly or collect in the form of icicles and growths in certain areas. Users often confuse the normal operation of the drip system with a malfunction, but normally the wall should be slightly damp, but not covered with snow. Let's look at the main factors influencing this process.
The operating principle of the drip defrosting system
To understand the nature of the problem, you need to know the device refrigeration circuit made in Belarusian technology. The back wall in refrigerators Atlant often is part of the evaporator or fits tightly to it. When the compressor operates, refrigerant circulates through the tubes, cooling this surface. Moisture from the air of the products and the chamber settles on the cold wall, turning into frost.
In normal mode, when the compressor turns off when the set temperature is reached, the wall heats up. The frost melts into water, which flows down the gutter into the drainage hole. This cycle repeats automatically. If a “snow coat” grows on the wall, it means that the balance between cooling and heating is disturbed, or moisture is not removed in time.
Particular attention should be paid to the thermostat, which regulates the frequency of turning on the motor. If the temperature sensor reads the readings incorrectly, the compressor can work without interruption, not allowing the wall to warm up for defrosting. As a result, each new cycle of operation adds a layer of ice to the previous one, which has not yet melted.
How to check the operation of the thermostat?
For an initial check, you can turn the thermostat knob to the minimum position. If the ice stops growing after a few hours, the problem may be that the temperature setting is too low. However, this is a temporary measure that does not solve the root of the sensor failure.
Main causes of rear wall icing
There are several key factors leading to excessive ice formation. Most often, the problem lies not in one part, but in the totality of the operating conditions and technical condition of the unit. The most common reason is a leak in the door seal. If the rubber band seal does not fit tightly, warm, moist air from the room constantly enters the chamber.
The second important aspect is the serviceability of the water drainage system. The drainage hole may become clogged with crumbs, mold, or ice. The water formed during defrosting cannot escape and freezes at the outlet, forming an ice plug that gradually grows up the wall. It is also worth checking the operation of the defrost heating element (if the model requires its presence in the drainage area) and the timer.
The third reason is a refrigerant leak or a clogged capillary tube. In this case, the compressor works almost non-stop, trying to gain temperature. The back wall becomes extremely cold, and even a normal amount of moisture instantly turns into ice without having time to drain. Freon leakage This is a serious malfunction that requires the intervention of a technician with the equipment.
Diagnostics of the seal and chamber tightness
Checking the condition of the door seal is the first step that you can do yourself. Over time, the rubber edging loses its elasticity, cracks or becomes deformed. Even a microscopic gap leads to a constant flow of moisture. Visually inspect the rubber around its entire perimeter for tears or dirt that would prevent a tight seal.
There is a simple and effective method for checking the tightness using a regular sheet of paper. Clamp the sheet with the refrigerator door in different places around the perimeter. If the paper falls out easily or is pulled out without resistance, it means in this place tightness is broken. Warm air freely penetrates inside, causing condensation and subsequent icing.
Often the problem is solved by simply washing and degreasing the seal and the mating part of the housing. Grease and sticky food residues prevent the rubber from sticking tightly to the metal. If the rubber becomes stiff or has cracks, it must be replaced. In some cases, heating the seal with a hairdryer helps to restore elasticity, but this is a temporary measure.
☑️ Checking the tightness
Problems with the drainage system and moisture removal
Clogged drainage is one of the most common reasons why the back wall at the bottom of the chamber freezes. The water drainage hole is located at the bottom of the rear panel. Condensation flows there, but along with it food particles, dust and mold spores fall. Over time, a viscous mass forms, blocking the drain.
When the water cannot escape, it freezes right at the hole. During the next defrost cycle, new water flows onto this ice plug and also freezes. The process continues until the ice rises high up the back wall, trapping food on the lower shelves. Visually, it looks like an ice stalagmite at the bottom of the chamber.
For cleaning, you can use a special brush, which often comes with the refrigerator, or soft wire/fishing line. Gently push through the clog, being careful not to damage the plastic walls of the channel. After mechanical cleaning, it is recommended to rinse the canal with warm water from a syringe or syringe without a needle to ensure free flow.
| Symptom | Probable cause | Solution method |
|---|---|---|
| Ice only at the bottom of the hole | Clogged drainage channel | Cleaning with a brush and rinsing with water |
| An even layer of snow over the entire wall | Leaking door or broken thermostat | Replacing the seal or temperature sensor |
| Ice build-up and icicles | Constant operation of the compressor (leakage) | Call a technician to find a freon leak |
| Water on the floor of the refrigerator | The outlet hose is displaced or broken | Adjust the hose, check the integrity |
Malfunctions of the thermostat and electronics
If mechanical reasons are excluded, the problem may lie in the “brains” of the refrigerator Atlant. The thermostat (thermostat) is responsible for turning the compressor on and off. In older models this is a mechanical device with a capillary tube, in new ones it is an electronic sensor. If the thermostat is “stuck” in the “on” position, the compressor produces cold without interruption.
In refrigerators with electronic control (system EcoCool and analogues) the main control module may fail. It may incorrectly process signals from temperature sensors, sending a command for continuous cooling. It is also possible that the sensor itself fails, which sends false signals that the chamber is warm, although in fact it is already frosty there.
Thermostat diagnostics at home are limited. You can try tapping the regulator or turning the knob from end to end several times to develop the contacts. However, if the device fails electrically, only replacement will help. Faulty thermostat - this is a risk not only of icing, but also of food spoilage due to deep freezing.
⚠️ Attention: When replacing the thermostat or sensors, be sure to turn off the refrigerator from the mains. Working with live electrical components is dangerous and can lead to a short circuit on the control board.
The effect of improper operation on icing
Often users themselves create conditions for ice formation without knowing it. Placing hot or warm food into the chamber is a classic mistake. The evaporation of moisture from hot soup or compote sharply increases the humidity inside the chamber. The moisture removal system simply cannot cope with such a volume of condensate, and it freezes on the back wall.
Another factor is storing food in open containers. Liquids, vegetables and fruits without packaging actively release moisture into the refrigerator air. This is especially true for pots of soup or open cartons of milk. Air humidity increases, the dew point shifts, and the intensity of condensation on a cold wall increases significantly.
It is also worth mentioning the frequent and prolonged opening of the door. If you stand in front of an open refrigerator for a long time, choosing food, a lot of warm room air manages to get inside. When the door is closed, this air cools, releasing its moisture in the form of frost. In the summer, when the room is hot and humid, this effect is enhanced.
Algorithm of actions when ice is detected
If you find that the back wall of your Atlanta is covered with ice, do not try to immediately pick it out with a knife or other sharp objects. This can lead to a puncture of the evaporator, which will instantly disable the refrigerator and require expensive repairs with refilling with freon. Proceed consistently and carefully.
The first step should be complete defrosting. Unplug the appliance, remove all food and leave the doors open for at least 24 hours (preferably two days). The ice should melt naturally. It is not recommended to speed up the process with a hairdryer or hot water, since a sharp temperature change can damage the plastic and seals.
After defrosting, thoroughly wash the chamber, clean the drainage hole and check the seal. Turn on the refrigerator empty and observe its operation throughout the day. If ice appears again after a short time, then the reason is not a one-time operating error, but a technical malfunction that requires repair.
⚠️ Attention: Never use sharp metal objects (knives, screwdrivers, blades) to chip ice. Damage to the evaporator tubes located directly behind the plastic panel or in the wall will lead to refrigerant escaping and air entering the system.
When you need to call a technician
There are a number of situations when independent repair is impossible or dangerous. If, after complete defrosting, checking the seal and cleaning the drainage, ice continues to build up at the same rate, the problem lies within the system. Most likely, we are talking about a refrigerant leak, a clogged capillary tube or a compressor breakdown.
A technician is needed if you hear unusual sounds: gurgling, humming, clicks that were not there before. Another warning sign is a hot refrigerator body on the sides or an excessively hot condenser at the back with poor cooling inside. This indicates problems with freon circulation.
In modern models Atlant with electronics, a fault can be indicated by a flashing temperature indicator or an audible signal. Self-diagnosis in such cases may indicate an error code, but only a specialist with the appropriate equipment and spare parts can decipher it and eliminate the cause.
Is it possible to operate a refrigerator with ice?
Short-term operation is acceptable, but constant operation with frozen ice leads to compressor overload. The motor works without rest, trying to break through the heat-insulating layer of ice, which reduces its service life by 2-3 times.
Why does ice form only in one corner of the rear wall?
Local icing often indicates that the thermal insulation in this place is broken or there is a microcrack in the circuit through which moisture penetrates. This may also indicate an uneven distribution of refrigerant in the evaporator due to the beginning of a blockage in the system.
How often do you need to defrost an Atlant refrigerator with a drip system?
The manufacturer recommends completely defrosting and washing the refrigerator at least once a year, even if there is no visible ice. This is necessary for hygiene, cleaning drainage and preventing unpleasant odors. However, if you notice a build-up of ice, defrosting should be done immediately.
Does the installation level of the refrigerator affect the formation of ice?
Yes, it does. If the refrigerator is tilted forward, water from the drainage gutter may not flow by gravity into the hole, but may spill onto the shelf or freeze at the entrance to the channel. The front legs should be unscrewed so that the body has a slight tilt back.
Is it dangerous to use a refrigerator if it is constantly covered with ice?
This is dangerous for the device itself. The compressor, working non-stop, overheats. In addition, ice acts as a heat insulator, preventing food from cooling effectively. In the long term, this will lead to the combustion of the motor-compressor - the most expensive part of the refrigerator.
Can changing the position of the thermostat help?
Moving the regulator to the “minimum” mode (less cold position) can temporarily stop the growth of ice, since the compressor will turn off more often. However, this is not a solution to the problem, but only masking the symptom. Products may begin to deteriorate due to insufficient cold, and the cause of icing will not go away.