The detection of an ice crust or massive icicles inside the refrigeration chamber is always a signal that the equipment is operating in emergency mode. Owners of refrigerators Atlant often face a situation where the back wall is covered with frost, which does not have time to thaw. This not only reduces the usable volume, but also creates a risk of food spoilage due to temperature violations.
Ignoring the problem can lead to more serious breakdowns, even failure of the compressor. The No Frost system or drip defrosting, installed in different models, is designed to prevent the formation of ice, but malfunctions in their operation are inevitable. Understanding the physics of the process will help you diagnose the malfunction yourself.
In this article we will analyze in detail why icing occurs, how to distinguish normal operation from pathology, and what steps need to be taken to restore the normal operation of your unit.
The principle of operation of the defrosting system
To understand the cause of icing, you need to understand in the basic operating principle of refrigeration equipment. In models with a drip system (often found in Atlantah), moisture from the air condenses on the cold rear wall, turning into frost. During the compressor's idle period, this frost thaws and the water flows into a special chute.
Drainage system is a key element that drains melt water into the evaporator located above the compressor. If this mechanism works smoothly, the inside of the chamber is always dry. However, the slightest disturbance in the water drainage cycle or in the operation of the heating elements leads to the accumulation of ice.
In more modern models with the system No Frost moisture is removed outside the chambers forcibly using a fan. Here the ice freezes on the hidden evaporator, and not on the walls that you see. The appearance of ice on the back panel in such refrigerators indicates a serious failure in air circulation or the tightness of the circuit.
⚠️ Attention: Constant operation of the compressor without stopping in the presence of ice is a sure sign that heat exchange is impaired. The unit tries to compensate for the insulating layer of ice by consuming excess electricity.
It is important to distinguish between a thin layer of frost that appears while the engine is running and disappears after it stops, and a dense ice crust. The first state is part of the operating cycle, the second is a symptom of a malfunction.
Stops in the drainage system
The most common reason why ice freezes is the banal clogging of the drain holes. During operation, crumbs, pieces of packaging, or mucus may form inside the gutter due to bacteria. The water stops leaving and freezes, forming a plug.
Each subsequent portion of condensate cannot pass through the ice plug and freezes on the surface, increasing the volume of ice. Over time, the ice lump can grow to impressive sizes, blocking the access of cold air to the products.
To clean the channel, it is often enough to use a soft wire or a special brush-brush. It is not recommended to use hard metal objects so as not to damage the plastic tubes inside the case.
☑️ Drainage diagnostics
After mechanical cleaning, be sure to flush the drainage with warm water to ensure free drainage. If the water is standing in the gutter, it means that (the blockage) is deeper, and more thorough cleaning or purging is required.
Faults of sensors and thermostat
Refrigerator electronics Atlant controls the cooling and defrosting cycles. If the thermostat or air temperature sensor transmits incorrect data to the control module, the refrigerator may not enter defrost mode on time.
Thermostat is responsible for turning the compressor on and off. If it breaks down, the refrigerator can work continuously, freezing all the moisture tightly. In models with electronic control, a defrost sensor is responsible for this process.
If the sensor is “stuck” or faulty, the system “thinks” that the evaporator is still warm and does not turn on the heating element for defrosting. As a result, a fur coat grows on the evaporator (and sometimes on the back wall if the seal is broken).
How to check the sensor with a multimeter?
To check the temperature sensor, you need to ring its contacts with a multimeter. As the temperature changes, the resistance should change. If the device shows an open or short circuit at any temperature, the sensor is faulty.
Replacing these elements requires disassembling the rear panel or accessing the technical compartment. It is recommended to use original spare parts Atlant, since the parameters of imported analogues may differ.
Problems with the door seal
The entry of warm, moist air from the room is another reason for icing. If the rubber door seal is worn, dirty or deformed, the seal of the chamber is compromised. Humid air gets inside, settles on the coldest surface (the back wall) and freezes.
Often the problem lies in the door being skewed or the hinges being loose. In this case, even a whole rubber profile does not provide a tight fit. Check whether the door closes evenly around the entire perimeter.
- 🧊 Ice forms mainly on the side where the pressure is broken.
- 🧊 The seal may simply be contaminated with grease, which is why it does not stick to the metal.
- 🧊 In the freezer, ice may appear at the bottom if it is bad the bottom of the door is adjacent.
You can restore the elasticity of the seal by wiping it with hot water or treating it with silicone grease. If the rubber is cracked or has lost its shape, only replacement will help.
⚠️ Attention: Do not use aggressive chemicals or solvents to clean the seal, this will accelerate its destruction and lead to a complete loss of tightness.
The influence of products and loading rules
Users often themselves provoke the formation of ice, violating the operating rules. Placing hot or warm food in the chamber causes the humidity to rise sharply. The moisture quickly condenses and turns into an ice crust.
It is also important not to overfill the refrigerator. If food is placed close to the back wall, it interferes with the circulation of cold air. In areas of stagnant moisture, condensation forms and freezes.
It is especially critical to leave a gap between the back wall and the products. In models Atlant with a drip system, this gap is necessary for water to drain.
Check whether large packages are blocking the outlet of the air ducts (in models No Frost). Impaired air circulation leads to local hypothermia and freezing of ice in unexpected places.
Comparative table of causes and solutions
For quick diagnosis, use the table below. It will help to compare symptoms with possible malfunctions.
| Symptom | Probable cause | Solution method |
|---|---|---|
| Ice only at the bottom of the rear wall | Drainage clogged holes | Cleaning with a brush, rinsing with water |
| Uniform coat over the entire wall | Faulty sensor/thermostat | Replacing the temperature sensor or thermostat |
| Ice on one side (at the door) | Seal failure | Adjusting hinges or replacing the seal |
| Ice after loading hot food | Human factor | Defrosting and following storage rules |
By analyzing symptoms, you can save time on calling a specialist. Simple problems, such as a blockage or a loose door, can be solved in 15 minutes.
If, after defrosting and checking the seal, the problem returns after 1-2 days, most likely you will need to replace parts of the defrosting system.
Full defrosting algorithm
Before Before starting repairs or calling a specialist, you must properly defrost the unit. Errors at this stage can ruin all restoration efforts.
Unplug the refrigerator and open the doors. Leave it for at least 10-12 hours (preferably a day) so that all the ice inside the system melts. Using a hairdryer or boiling water to speed up the process is prohibited - this can damage the plastic and tubes.
After the ice melts, be sure to dry the chamber and, most importantly, blow out the drainage hole. Make sure that the water flows freely.
Turn on the equipment only after it has been turned off for at least 2 hours. This is necessary to equalize the pressure in the system and protect the compressor.
When you need to call a technician
There are situations when independent repair is impossible or dangerous. If you have checked the drainage, seal and sensors, and the ice continues to grow, the problem may lie in a freon leak or a compressor malfunction.
Refrigerant leak often accompanied by swelling of the rear wall (at the sealing point of the evaporator) or, conversely, a complete lack of cold when the engine is running. In this case, professional sealing and refilling is required.
It is also worth contacting service if the refrigerator makes extraneous sounds (gurgling, knocking) simultaneously with icing. This may indicate problems with freon circulation.
Repairing complex electronics (control module) also requires special equipment and knowledge. Trying to independently solder the board can lead to a short circuit.
⚠️ Attention: If you smell burnt wiring or see sparking, immediately disconnect the device from the network and do not try to turn it on again until the technician arrives.
Timely contacting specialists will extend the life of your device. Atlanta and will save you from expensive major repairs.
Frequently asked questions (FAQ)
Is it possible to scrape ice with a knife?
It is absolutely not possible. A sharp knife can damage the cooling system (freon pipes), leading to leaks and costly repairs. Use only a plastic scraper or defrost naturally.
Why does ice appear only in summer?
In summer, air humidity is higher and the room temperature is higher. The refrigerator has to work harder, and if there is the slightest leak or blockage, the moisture will condense faster than it can be removed.
How long should the drain tube dry?
After washing, the water should leave almost instantly. If it stays in the groove for more than 10-20 seconds, it means that the permeability is impaired and repeated cleaning is required.
Does installing a refrigerator next to the battery affect icing?
Yes, it does. Heating the case on one side and cooling on the other upsets the thermal balance. The compressor operates with overload, which can lead to failures in the defrosting cycle and freezing of ice.
What to do if ice appears after 2 hours after defrosting?
This is a sign of a serious malfunction, most likely associated with the “sticking” of the thermostat or defrost sensor. The system does not see that the evaporator needs to be heated. Diagnostics of the electrical part is required.