Situation, when The Atlant refrigerator works constantly and does not go into rest mode, is familiar to many owners of this equipment. The compressor hums continuously, creating increased noise and consuming excess electricity, which inevitably leads to increased utility bills. This is not just an annoyance, but the first signal that the balance between the production of cold and its preservation inside the chambers is disturbed.
In most cases, the unit tries to compensate for the lack of temperature, so the motor does not stop. If you ignore this symptom, the resource of an expensive compressor will be exhausted much earlier than expected. Atlant refrigerators They are famous for their reliability, but even they do not last forever and require careful attention to fault signals.
In this article we will analyze in detail why The refrigerator does not turn off, which nodes most often fail and whether you can fix the problem yourself. Understanding the principles of operation of the system will help you make the right decision: call a technician or try to repair the equipment yourself.
Primary diagnostics and external factors
Before you panic and look for the service center number, you need to exclude trivial reasons that are often overlooked. Sometimes the refrigerator is running continuously due to improper use or external conditions, rather than internal failure. Check to see if the unit is too close to heat sources, such as a radiator, gas stove or direct sunlight.
It is important to ensure that the sealing rubber on the doors is intact. If a gap is formed between the body and the door, warm air constantly flows inside. In this case, thermostat or the electronic control module detects the increase in temperature and commands the compressor to work continuously, trying to cool the volume.
⚠️ Attention: If you notice that the rubber seal is cracked or coming away from the body, do not try to glue it with regular superglue. This will cause the rubber to harden and lose its seal. Use only special compounds for rubber or replace the seal.
It is also worth checking whether the refrigerator is overloaded. If you have just placed a large amount of room temperature food inside, the compressor will work hard for several hours until it reaches the set parameters. This is normal operation, not a breakdown.
Malfunctions of the thermostat and temperature sensors
One of the most common reasons The Atlant refrigerator hums and does not turn offis the failure of the thermostat. Older models use a mechanical device that over time loses sensitivity or “sticks” in the “On” position. In more modern models with the No Frost system, electronic sensors are responsible for this.
If the thermostat is faulty, it simply does not send a signal to turn off the motor, even when the required subzero temperature has already been reached in the chamber. In mechanical regulators, the bellows tube often breaks or freon leaks from the thermostat itself, which makes it unable to respond to pressure changes.
In models with electronic control, the problem may be the evaporator or air damper temperature sensor. If it transmits incorrect data to the control module, the system will assume that there is not enough cold. Repairing the thermostat at home it is possible, but requires a multimeter and electrical skills.
Problems with the compressor and motor
The very heart of the refrigeration unit - compressor - can also cause continuous operation. If refrigerator motor is worn out, its performance decreases. It continues to work, trying to gain the required pressure in the system, but due to the exhaustion of the piston group or valves, it cannot cope with the task.
In some cases, the problem lies in the start-up relay. This small element is responsible for starting the engine and protecting against overloads. If the relay is stuck or burnt out, the compressor may hum but not start, or it may run without stopping because it does not receive a command to rest. Replacing a relay is an inexpensive procedure and is often done independently.
It is important to listen to the sound of the unit running. If the sound becomes louder, metallic knocks or vibration appear, this may indicate that compressor it is running dry or has mechanical damage. In such a situation, further operation is dangerous and can lead to complete failure of the unit.
⚠️ Attention: If the compressor is hot to the touch (temperature exceeds 70-80 degrees) and does not turn off for more than a day, there is a high probability of an interturn short circuit of the windings. Continuing operation may lead to a fire.
Refrigerant leakage and system blockage
When a leak occurs in the circulation system refrigerant (freon), the pressure drops and the cooling capacity decreases sharply. The compressor begins to work in increased mode, trying to compensate for the lack of gas, but the temperature in the chambers does not drop to the desired level. As a result, the equipment works constantly.
A similar situation is observed when the capillary tube is clogged. Oil wear products or moisture entering the system can clog the narrow channel. Freon cannot circulate through the circuit, the pressure at the outlet of the compressor increases, and at the inlet it drops. The engine hums, but there is no cold.
It is almost impossible to diagnose these problems without special equipment (pressure gauges, leak detectors). Refilling the refrigerator and finding leaks is a task for professionals, as they require evacuation of the system and precise dosing of gas.
Is it possible to refuel the refrigerator yourself?
Theoretically, it is possible if you have the equipment and skills. However, without finding and eliminating the cause of the leak, the freon will disappear again within a few days or weeks. In addition, different models require different types of oil and freon (R600a, R134a), an error in the selection of which will lead to compressor failure.
Comparative table of symptoms and causes
For a more accurate determination of the malfunction, it is convenient to use the summary table. It will help to compare the observed signs with probable breakdowns.
| Symptom | Probable cause | Difficulty of repair | Necessary actions |
|---|---|---|---|
| The compressor is hot, not turns off | Freon leak, clog | High | Call a technician |
| The refrigerator freezes poorly | Thermostat is faulty | Medium | Thermostat replacement |
| Strong vibration and noise | Compressor wear | High | Motor replacement |
| Ice build-up on the back wall | Problems with defrosting (No Frost) | Average | Checking the heating element and timer |
| Clicks when trying to start | Faulty starting relay | Low | Replacement of relay |
As can be seen from the table, some problems can be solved by replacing an inexpensive part, others require complex intervention. The critical sign is the combination of continuous operation of the motor with a complete absence of coldwhich most often indicates a gas leak or serious clogging.
Features of the No Frost system in Atlant models
In refrigerators Atlant with the No Frost system, another layer of potential malfunctions is added. Here, a whole chain of elements is responsible for heat removal and defrosting of the evaporator: heating element, defrost sensor, timer or electronic module. If any of them fails, the evaporator becomes covered with a “coat” of ice.
Ice blocks the circulation of cold air. Sensors detect high temperature in the chamber and force the compressor to work constantly, although physically cold air does not enter the chamber. In such cases, you can often hear the whistling or noise of a fan trying to push air through the ice plug.
For diagnostics, you need to defrost the unit completely (at least 24 hours) and check the resistance of the heating element and sensors with a multimeter. Often the problem is solved by replacing the defrost sensor, which is inexpensive, but requires disassembling the rear panel in the freezer.
☑️ Diagnostics of the No Frost system
When you need to call a technician
Despite the desire to save money, there are situations when do-it-yourself repair is impractical or dangerous. If diagnostics indicate a freon leak, sealed soldering of the tubes and evacuation of the system are required. Without professional equipment, it is impossible to carry out this work efficiently.
Also, you should not open the sealed compressor casing yourself or try to replace the motor itself if you do not have experience working with refrigeration equipment. Incorrect refilling with oil or freon, violation of proportions can kill a new compressor in a matter of minutes.
⚠️ Attention: When working with refrigeration systems, remember that some modern refrigerants (for example, R600a) are explosive. Any work related to the violation of the tightness of the circuit should be carried out in a well-ventilated area away from open fire.
If the situation has not changed after replacing the thermostat or relay, it is better to contact a specialist. They will carry out a full diagnostic using a pressure gauge station and tell you exactly what has gone wrong.
Why does the Atlant refrigerator not turn off for a long time after defrosting?
After defrosting, the temperature inside the chambers is much higher than the operating temperature. The compressor takes time (from 2 to 8 hours depending on the model and load) to cool the volume to the set temperature. If the temperature does not drop within 10-12 hours of operation without a break, then there is a malfunction.
Is it possible to operate the refrigerator if it does not turn off?
For a short time - it is possible, but not recommended. Long-term operation without stopping leads to overheating of the compressor windings, drying out of the oil and accelerated wear of rubbing parts. This reduces the service life of the unit by 2-3 times.
How to check the thermostat at home?
You need to remove the thermostat, immerse its sensitive tube in water with ice. If the contacts do not click (open) after a few minutes, the thermostat is faulty. For an accurate check, it is better to use a multimeter in dial mode.
Does the room temperature affect the operation of the refrigerator?
Yes, it does significantly. If the room is hot (above +25...+28°C), the heat exchange of the condenser deteriorates. The compressor is forced to work longer to release heat. In such conditions, frequent switching on or long-term operation is normal.
What to do if the new Atlant refrigerator is constantly running?
The new unit, when turned on for the first time, can work for up to 24 hours without shutting down, since it cools the warm body and food. If the mode does not return to normal after a day, check the position of the thermostat (is it not turned to maximum) and the presence of a gap at the back wall for ventilation.