The situation when the refrigerator Atlant stops turning off and works around the clock is an alarming signal, which, if ignored, can lead to serious damage to expensive components. In normal mode, the unit must periodically stop to allow the system to “rest” and accumulate cold. If the compressor hums without interruption, and the temperature inside the chambers does not drop to the required values, this indicates a violation of the thermodynamic cycle.
Most often, owners notice a problem when ice forms on the walls, food begins to deteriorate, and electricity bills rise sharply. Continuous operation the engine leads to its overheating and rapid wear, so you need to look for the cause immediately. In this article, we will analyze in detail why this happens and whether it is possible to fix the malfunction yourself.
To begin with, it is worth eliminating banal operating errors, which are often mistaken for a breakdown. If you have just loaded a large amount of warm food into the chamber or left the door ajar while cleaning, the equipment will work in enhanced mode until the temperature balance is restored. However, if these factors are excluded, and the motor continues to work, then the problem lies in the technical components.
⚠️ Attention: Long-term operation of the compressor without stopping leads to overheating of the motor windings and can cause its complete failure. Do not leave the problem unattended for more than a day.
The influence of the external environment and operating mode
First of all, you need to analyze the conditions in which your Atlant refrigeratoris located. Units of this brand, like most modern models, are sensitive to ambient temperature. If the equipment is installed next to a heating radiator, stove, or in direct sunlight, the cooling system cannot cope with heat removal. In such conditions, heat exchange is broken, and the motor is forced to work constantly.
It is also worth checking the tightness of the door seals. Over time, the rubber contour dries out, cracks or becomes deformed, allowing warm air to enter the chamber. The temperature sensor detects the increase in degrees and commands the compressor to work without stopping. You can check the seal in a simple way: hold a sheet of paper in the door and try to pull it out. If the paper is removed without resistance, the seal is broken.
- 🌡️ Check the distance from the back of the refrigerator to the wall - it should be at least 10 cm for normal air circulation.
- 🚪 Make sure that the door closes tightly and is not warped due to improper installation or overloading of the shelves.
- 🧊 Do not place hot dishes in the chamber - this creates a colossal load on the cooling system.
Another reason may be incorrect temperature setting. If you turn the knob to maximum (usually a value of 6 or 7), the refrigerator will strive to reach extremely low temperatures, which is physically impossible without interruptions in the summer. For everyday food storage, it is enough to set the regulator to the value 3 or 4.
Malfunctions of the thermostat and sensors
One of the most common reasons why Atlant refrigerator does not turn off is the failure of the thermostat. This small device is responsible for monitoring the temperature inside the chambers and sending a signal to turn the compressor on or off. If the contacts inside the thermostat “stick” in the closed position, the circuit does not open and the engine continues to operate.
In models with electronic control (No Frost), the air sensor or defrost sensor is responsible for this process. If it transmits incorrect data to the control module, the system “thinks” that the chamber is warm and does not give a command to stop. Diagnostics of such elements requires the use of a multimeter to check the resistance.
How to check a thermostat with a multimeter?
To check, remove the thermostat and immerse its sensitive tube in a container of water at room temperature. Test the contacts with a multimeter. If the device shows “0” or a value close to it, and when the tube is cooled (by placing it in the freezer), the contact does not open, the part is faulty and requires replacement.
Replacing the thermostat is a procedure accessible to a DIYer, but requires care. It is important to choose the right analogue, since different models Atlant may have different response parameters. It is also worth checking whether the contacts at the place where the wires are connected are oxidized.
⚠️ Attention: When replacing the thermostat in two-chamber refrigerators, it is important not to damage the capillary tube. Its deformation will lead to a leak of freon and will require calling a technician for refilling.
Problems with the defrost system (for No Frost models)
If your Atlant is equipped with a system No Frost, continuous operation of the compressor often indicates a malfunction in the defrost circuit evaporator. In such refrigerators, the frost on the evaporator must be periodically melted with a special heating element. If the heating element is burned out, or the defrost timer is faulty, the evaporator becomes overgrown with a “coat” of ice.
The ice crust blocks the circulation of cold air. The temperature sensor does not sense the cold, since it is covered with ice, and forces the compressor to work around the clock. Visually, this can be seen by the fact that it is warm in the refrigerator compartment, and there is a lot of snow or ice on the back wall in the freezer compartment.
For diagnostics, you need to defrost the refrigerator completely (at least 24 hours with the doors open). If, after defrosting, the unit started working in normal cyclic mode, and after a few days it stopped turning off again, the problem is guaranteed to be in the defrosting system.
- 🔥 Defrost heating element: a heating element that could burn out.
- ⏲️ Defrost timer: a mechanical or electronic unit that controls defrosting cycles.
- 💧 Defrost sensor: records the evaporator temperature and turns off the heating element when the desired degree is reached.
☑️ Diagnostics of the No Frost system
Refrigerant leak and problems with the compressor
A more serious reason, why Atlant refrigerator it hums, but does not cool and does not turn off, is a freon leak. The refrigerant circulates through a system of tubes, picking up heat. If its quantity decreases due to microcracks in the circuit or corrosion, the cooling efficiency decreases. The compressor tries to compensate for the lack of cold, working to wear out.
The second option is to reduce the performance of the compressor itself. Over time, the engine's service life is exhausted, the valves inside it wear out, and it ceases to create the necessary pressure in the system. In this case, even with the full volume of freon, the cold is not generated in the required volume.
It is difficult to diagnose a leak on your own, since freon is colorless and odorless. An indirect sign may be swelling of the side walls of the refrigerator (in places where the heating circuit is laid around the perimeter of the door) or the appearance of oily spots near the compressor.
Repair in the event of a leak includes searching for the location of the damage, soldering and subsequent evacuation of the system and refilling with new refrigerant. It is impossible to perform this operation independently without special tools (vacuum pump, pressure gauge station).
Table: Symptoms and probable causes
To quickly navigate the situation, use a summary table of symptoms. It will help narrow down the troubleshooting.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| The refrigerator is humming, but there is no cold | Freon leak or compressor breakdown | High (needs a technician) |
| The motor is running, there is a coat of ice in the freezer | Malfunction of the defrosting system (No Frost) | Medium (replacement of the heating element/timer) |
| The unit does not turn off after loading products | Violation of operating rules or thermostat | Low (adjustment or replacement) |
| A click is heard, but the motor does not start | Start relay or compressor wedge | Medium/High |
| The refrigerator turns off, but rarely | Clogging of the capillary tube | High (flushing the system) |
It is important to understand that accurate diagnosis of complex components, such as a compressor or a sealed circuit, can only be carried out by a specialist with equipment. Independent attempts to open the cooling system will lead to leakage of freon and increased cost of repairs.
When a call to a specialist is necessary
There are a number of situations when attempts at independent repair are not only useless, but and dangerous. If after checking the seals, defrosting and adjusting the temperature, the problem persists, most likely, professional intervention is required.
A particularly alarming signal is the appearance of extraneous sounds: knocking, metallic clanging or a strong vibrational hum. This may indicate that the compressor is running dry or is about to seize. It is also worth contacting the service if you do not have the skills to work with electrical circuits and a multimeter.
- 🛠️ No cold when the engine is running for more than 12 hours.
- 🔥 Strong heating of the compressor housing (impossible to touch with your hand).
- 💧 The appearance of water under the refrigerator or inside the chambers with a working drainage system.
⚠️ Attention: In modern models Atlant with electronic control, erroneous sensor readings can block the start of the compressor or, conversely, force it to work continuously. For diagnostics, reading error codes from the control module is required.
Frequently asked questions (FAQ)
Can the refrigerator not turn off due to the heat?
Yes, in the summer, when the room temperature is above +30°C, it is more difficult for the refrigerator to give off heat. However, he must still take breaks from work. If there are no pauses at all, this is a malfunction.
How long does it take the refrigerator to get cold after defrosting?
Usually the process of reaching the mode takes from 2 to 6 hours. If after 8-10 hours of continuous operation the temperature does not drop, then there is a technical problem.
Why does the refrigerator not turn off after replacing the seal?
Perhaps the new seal does not fit tightly, or the thermostat was damaged during installation. It is also worth checking whether the temperature is set correctly.
Is it dangerous to leave a refrigerator running non-stop on?
Yes, it is a fire hazard and economically unprofitable. Overheating of the wiring and motor can lead to a short circuit or fire.