The situation when your Atlant refrigerator suddenly stops freezing or starts working incorrectly always causes panic. Products can deteriorate in a matter of hours, and the consequences of a breakdown can result in expensive repairs. However, before calling a technician, it is worth carrying out an initial diagnosis, since often the reason lies in trivial things that can be eliminated on your own.
In this article we will analyze in detail the main reasons why brand appliances Atlant lose cooling capacity. We will consider both simple operating errors and complex technical malfunctions that require specialist intervention. Understanding the principles of operation of the compressor and the defrost system will help you quickly navigate the problem.
You should not ignore the first signs of a failure, such as a change in temperature in the main chamber or the appearance of ice where it should not be. A timely response to changes in the operation of the unit allows you to avoid failure of an expensive compressor. Let's look at all the possible scenarios and ways to solve them in order.
Operation errors and external factors
Often users are faced with the problem of insufficient cooling due to improper operation of the equipment. This is not a breakdown in the literal sense of the word, but the result of a violation of the rules of use. For example, if you have just loaded a large pan of hot soup into the chamber, thermostat you may simply not be able to cope with a sharp jump in temperature.
It is also worth paying attention to how tightly the door is closed. If the rubber seal is dirty or damaged, cold air will escape and warm air will flow in. This causes the compressor to work hard, but does not give the desired result. Check to see if anything is preventing the door from fitting tightly to the body.
The location of the refrigerator is also an important factor. If it stands close to the wall or in a niche without gaps, heat transfer is disrupted. The engine does not have enough cooling air, and operating efficiency decreases. Make sure that the distance to the walls is at least 5-7 centimeters on all sides.
Check the temperature settings. Perhaps one of the household members accidentally moved the regulator to the minimum cold position. For models with electronic control, it is worth checking whether the “Vacation” or “Super Freeze” mode is activated at the wrong moment.
Problems with the defrosting system (No Frost)
If you have a model with a system No Frost, and you notice that the refrigerator is humming, but there is no cold, the problem may lie in the defrost system. In such units, the evaporator is hidden behind the back wall, and the frost that freezes there must be removed regularly. If this process is disrupted, the ice plug blocks air circulation.
The main culprits here are Defrost heating element, the temperature sensor or timer. When the heating element burns out, the ice does not melt, but grows layer by layer. As a result, the fan stops moving air through the chambers, and the food begins to deteriorate. This is often accompanied by strange sounds or their complete absence, although the motor is running.
The defrost sensor is another common “suspect”. It controls the temperature of the evaporator and gives a command to turn on the heater. If the sensor “lies”, the system may not start the defrost cycle at all or, conversely, heat for too long. Diagnosis of these elements requires testing with a multimeter.
⚠️ Attention: An attempt to defrost the refrigerator mechanically (picking the ice with a knife) can lead to damage to the evaporator and leakage of freon. Use only natural defrosting.
To remove the ice jam, it is often necessary to completely defrost the unit within 24 hours. If, after switching on, the problem returns after a week or two, it means that one of the elements of the defrost system has failed and requires replacement.
How to check the defrost heating element?
To check the heating element, you need to get to the evaporator, disconnect the heater contacts and ring it with a multimeter. The resistance of a working heating element is usually in the range from 200 to 400 Ohms. If the device shows a break (infinity), the element requires replacement.
Malfunctions of the thermostat and sensors
The thermostat is the “brain” of the refrigerator, responsible for turning the compressor on and off. If this unit fails, the unit can either work without interruption, freezing everything into stone, or not turn on at all. In the case when the Atlant refrigerator does not freeze well, it is often the “runaway” regulator that is to blame.
Mechanical models use a capillary tube that responds to temperature changes. Over time, the gas in the tube may evaporate, or the contacts inside the relay may burn out. In electronic models, air sensors are responsible for this function, which also tend to fail. temperature sensors, which also tend to fail.
Symptoms of a malfunctioning thermostat can be different: the refrigerator turns on for 10-15 seconds and turns off, or the motor does not start at all, although the light inside is on. In some cases, lightly knocking on the regulator helps, but this is only a temporary measure.
Replacing the thermostat is not the most difficult procedure, but it requires care. It is important to choose the right analogue, since the on and off parameters may differ for different models. An incorrectly selected sensor will lead to incorrect operation of the entire system.
Refrigerant (freon) leakage
One of the most unpleasant The reason why the refrigerator stopped freezing is a leak freon. The refrigerant circulates in a closed circuit, and if a microcrack or hole forms in the tubes, the gas gradually evaporates. Without freon, heat exchange is impossible, and cold is simply not produced.
Leakage can occur due to metal corrosion (especially in models with a foamed evaporator), mechanical damage during transportation or poor-quality factory soldering. Often the place of leakage is the heating circuit of the door perimeter, which rusts from the inside.
Signs of a freon leak are quite characteristic: the compressor works almost non-stop, trying to gain temperature, but the chambers are warm. In this case, the motor itself can become very hot. There may be no characteristic heating observed on the rear grille (condenser), or it will only be partially heated.
It is impossible to repair the leak and refill the refrigerator on your own. This requires special equipment: a vacuum pump, a pressure gauge station and a supply of refrigerant. The technician must find the leak, solder it, replace the filter drier and refill the system.
Below is a table that helps differentiate the symptoms of various malfunctions:
| Symptom | Probable cause | Necessary actions |
|---|---|---|
| The compressor hums, but does not start | The starting relay is faulty or the motor is jammed | Replacing the relay, compressor diagnostics |
| The refrigerator turns on and turns off immediately | Problems with thermostat | Replacing the thermostat |
| The motor runs without stopping, there is no cold | Freon leakage or capillary blockage | Searching for leaks, evacuation, refilling |
| Increasing “fur coat” on the back wall | The No Frost system is faulty | Checking the heating element, sensor, timer |
Clogged capillary tube
Another technical reason why Atlant refrigerator may freeze poorly - this is a clogged capillary tube. This is a narrow tube through which liquid freon enters the evaporator. Over time, oil oxidation products or moisture may accumulate in the system, which turn into an ice or mud plug.
When clogged, the refrigerant circulation is disrupted. The compressor tries to push freon, creating high pressure, but not enough gets into the evaporator. As a result, one part of the refrigerator may freeze normally, while the other remains warm, or the cold disappears completely.
You can diagnose a blockage by a characteristic sound: gurgling or hissing may be heard when the motor is running, and the tube at the compressor outlet may be hot, while the condenser remains cold. Also a sign is that the compressor is operating with overheating.
Removing the blockage requires professional intervention. The technician must “push” the system with nitrogen under high pressure, replace the filter drier and evacuate the circuit. In difficult cases, it is necessary to replace the capillary tube itself, which is a labor-intensive process.
Problems with the compressor and start relay
The compressor is the heart of the refrigerator. If it fails, the unit stops functioning completely. However, it often happens that the motor itself is intact, but cannot start due to a malfunction starting relay. This device provides the initial impulse to start the engine.
If the relay is burned out, you will hear a characteristic click, after which the motor hums for a couple of seconds and turns off. After some time, the attempt is repeated. In this mode, the refrigerator does not freeze, and the compressor may fail due to overheating of the windings.
The worst malfunction is an interturn short circuit in the compressor windings. In this case, the engine may hum, but not develop the required pressure, or the circuit breaker in the electrical panel may trip. Repairing such a motor is usually impractical; replacement with a new one is required.
When replacing a compressor, it is important not only to solder the new unit, but also to thoroughly flush the system with nitrogen to remove oil combustion products from the old motor. Otherwise, the new compressor will quickly fail.
☑️ Primary diagnostics of the refrigerator
Frequently asked questions and answers (FAQ)
Why does the Atlant refrigerator freeze only the top or bottom camera?
This is a classic sign of a freon leak or a clogged capillary system. In two-chamber models, refrigerant circulation is often built sequentially. If there is little gas, there is only enough gas for the first section of the circuit. You need to call a technician to find the leak and refill it.
Is it possible to operate the refrigerator if it has stopped freezing?
For a short time - yes, if you have unloaded the food. But it is impossible to keep it on for a long time in the event of a malfunction (especially if the compressor is running non-stop). This will lead to overheating and combustion of the engine, which will significantly increase the cost of repairs.
How much does it cost to repair if the refrigerator does not freeze?
The cost depends on the breakdown. Replacing a thermostat or relay is inexpensive. Refilling with freon and fixing the leak will cost more. Replacing a compressor is the most expensive procedure, often accounting for up to 50-60% of the cost of a new refrigerator.
How to extend the life of the Atlant refrigerator compressor?
Regularly wash the condenser grille at the back to remove dust, do not place the refrigerator close to the wall, let it “rest” for 10-15 minutes after defrosting before turn on and avoid sudden power surges in the network.