The situation when Atlant refrigerator does not turn offis one of the most common and alarming for owners of household appliances. Instead of the usual rhythmic hum and periodic pauses, the unit works non-stop, trying to achieve the set temperature parameters. This not only leads to a sharp increase in electricity bills, but also creates the risk of complete breakdown of expensive equipment.
The constant operation of the motor-compressor indicates that there is a failure in the cooling system, and the refrigerator physically cannot reach the desired temperature or the sensors do not record its achievement. Belarusian refrigerators Atlant famous for their reliability, but even they are subject to wear, the influence of voltage surges or mechanical damage. Understanding the root cause is the first step to successful recovery.
In this article we will analyze in detail the main reasons why The refrigerator stopped turning offand explain how to diagnose the problem yourself. You will learn in which cases you can get by with adjustments, and when you need to call a technician to replace the freon or compressor. Ignoring the problem can lead to the fact that in a few days the equipment will completely fail.
Natural causes of continuous operation
Before sounding the alarm and looking for a breakdown, it is worth eliminating factors not related to the malfunction of the components. Often Atlant refrigerator works without interruptions due to external conditions. For example, if you have just loaded a large amount of warm food into the chamber, the unit will operate at maximum power until it cools the entire volume. This is normal mode, which can last several hours.
It is also worth checking the temperature in the room. If refrigerator stands next to a radiator, stove or in direct sunlight, the thermoregulation system may not work correctly. In a hot room, heat exchange is disrupted and the compressor simply does not have time to cool down. Make sure there is clearance around the cabinet for ventilation.
⚠️ Attention: If you set the Super Freeze or Maximum Cool mode, the refrigerator will run continuously until you return the settings to standard mode. This is not a malfunction.
Another reason may be a loose door fit. If the sealing rubber is worn out or dirty, warm air constantly enters the chamber. Thermostat records an increase in temperature and commands the compressor to continue working. Check that the seal is clean and that there are no foreign objects preventing it from closing tightly.
Malfunctions of the thermostat and temperature sensors
One of the main reasons why the refrigerator does not turn offis the failure of the thermostat (thermostat). This device is responsible for turning the compressor on and off depending on the temperature inside the chamber. If the thermostat contacts are “stuck” in the “on” position or the sensor has lost sensitivity, the motor will hum constantly, even if a block of ice has already formed in the freezer.
In modern models Atlant with No Frost and electronically controlled ones, instead of a mechanical thermostat, air thermostats can be used sensors Their failure leads to the fact that the electronic control module does not receive correct data and does not give a command to stop the cycle. Diagnostics of such elements requires the use of a multimeter to check the resistance.
Symptoms of a malfunctioning thermostat are often accompanied by the absence of a characteristic click when the engine stops. If you hear that the compressor has gone silent, but the light inside is on and the cycle is not interrupted, or the unit does not respond at all to turning the control knob, the problem lies precisely in the temperature control system.
How to check the thermostat yourself?
To check a mechanical thermostat, it can be removed and placed in a container of water, the temperature of which corresponds to the on/off temperature (usually about 3-5 degrees). If there is no click, the part requires replacement. However, this method is not suitable for electronic sensors - professional diagnostics are needed.
Refrigerant leakage and circulation problems
If The Atlant refrigerator hums, but does not turn off, and the temperature inside the chambers is higher than normal, there is a high probability of freon leakage. Refrigerant is the “lifeblood” of the refrigerator, and if there is a shortage of it, the system cannot create the necessary pressure and cold. The compressor tries to compensate for the lack of freon by working in enhanced mode, but physically does not reach the target indicators.
A leak can occur anywhere in the circuit: in the evaporator, condenser or in the places where the tubes are soldered. This often happens due to metal corrosion or mechanical damage during transportation. It is difficult to determine a leak visually, but an indirect sign may be swelling of the rear wall inside the refrigerator compartment or the appearance of oily spots on the outside.
| Symptom | Possible cause | Necessary actions |
|---|---|---|
| The compressor is hot, cold no | Freon leak or blockage | Call a technician to find the leak and refill |
| Frost only at the entrance to the evaporator | Lack of refrigerant | Diagnostics system tightness |
| The condenser (grid at the back) is cold | Lack of freon in the circuit | Urgent repairs, running “dry” will kill the compressor |
| Audible gurgling or hissing | Impaired circulation or leakage | Checking the integrity of the tubes |
It is important to understand that operation refrigerator with a freon leak is dangerous for the compressor itself. It overheats because the freon also serves as a coolant for the motor windings. Long-term operation in this mode will lead to an expensive replacement of the motor.
Wear of the compressor and start relay
The motor-compressor is the heart of the refrigeration unit. Over time, its resource is depleted. If Atlant refrigerator compressor worn out, it may lose performance. The piston group wears out, the valves lose their tightness, and the pressure in the system does not rise to the required level. As a result, the refrigerator works constantly, but cools poorly.
Another important element is the start-up relay. It is responsible for starting the engine and protecting against overloads. If the relay is faulty, the contacts may not open after starting, or the engine may not start properly, making a humming noise and trying to run without shutting down. In some cases, the relay may “stick” in the closed state.
- 🔥 Overheating: If the compressor housing becomes too hot to touch, this is a sign of overload or ventilation problems.
- 🔊 Strange sounds: A knocking, metallic clanging or strong vibration indicates a mechanical problem damage to the internal components of the motor.
- 🛑 Knocking out plugs: If, when you try to start the refrigerator, the machine or relay immediately knocks out, an interturn short circuit may have occurred in the winding.
Diagnostics of the compressor requires measurement winding resistance and checking output pressure. It is difficult to replace the compressor yourself, as this requires a special tool for soldering copper tubes and evacuating the system.
Clogged capillary tube and moisture removal system
There is a bottleneck in the freon circulation system - the capillary tube. Through it, the refrigerant is supplied to the evaporator. Over time, a blockage may form in the tube due to oil oxidation products or moisture entering the system. Atlant refrigerator in this case, it works non-stop, trying to push freon through the obstacle, but the cooling capacity drops.
Often the blockage is accompanied by the formation of an “ice plug”. If there is moisture in the system, it freezes at the narrowest point of the capillary tube, cutting off the flow of refrigerant. When the power is turned off, the plug melts and the cycle repeats. Visually, this may manifest itself in the fact that part of the condenser is hot and the other part is cold.
To eliminate this problem, a professional cleaning of the system with high pressure nitrogen, replacement of the filter drier and refilling is required. It is almost impossible to remove a clogged capillary tube on your own without equipment.
☑️ Symptoms of a clogged system
Problems with the electronic control module
B models Atlant with electronic control (often these are two-compressor models or series with a display), the main module is responsible for the operation of all components. If the triac on the control board that controls the compressor burns out, or a software failure occurs, the shutdown signal may simply not be received.
It is also worth checking the defrost sensor (in No Frost systems). If it is faulty and does not signal that the evaporator has warmed up, or, conversely, constantly signals that it is warm, the operating algorithm is disrupted. The compressor may turn on at inopportune times or work longer than expected.
⚠️ Attention: Diagnostics of the electronic module requires special knowledge in electronics. An attempt to repair the board yourself can lead to a short circuit and failure of other expensive components.
Often, module failure is associated with power surges in the network. If lights flicker frequently in your area, it is recommended to use a voltage stabilizer to protect your equipment. This will extend the life not only of the refrigerator, but also of other household electronics.
Algorithm of actions when a problem is detected
If you notice that the refrigerator does not turn off, do not panic. Follow the step-by-step algorithm to minimize damage and correctly diagnose the situation. First of all, evaluate external factors: the temperature in the room, the position of the door, the presence of warm food.
Then listen to the operation of the unit. Does it hum smoothly, or are there extraneous sounds? Check the heating of the compressor and condenser. If you see obvious signs of a malfunction (swelling of the wall, oil stains, lack of cold during operation), it is better to stop operation and call a specialist.
Remember that timely contacting a specialist can often get you off with a cheap repair (replacing the thermostat, removing a blockage), while prolonged operation in emergency mode leads to the combustion of the compressor, the replacement of which can cost up to 50% of the price of a new one refrigerator.
Why does the Atlant refrigerator hum loudly and not turn off?
A loud hum combined with continuous operation may indicate several problems. Firstly, this may be a sign that the compressor is working hard, trying to compensate for the freon leak. Secondly, the cause may be a malfunction of the fan (in No Frost models) that blows on the condenser; if it is broken, the compressor overheats and does not turn off. Thirdly, it is possible that the refrigerator is not level, and the vibration increases during prolonged operation.
Is it possible to operate the refrigerator if it does not turn off?
Short-term operation in this mode (several hours) is acceptable, for example, after defrosting or loading food. However, long-term use (a day or more) is strictly not recommended. This leads to overheating of the compressor, melting of the wiring insulation, increased energy consumption and, ultimately, engine failure. If the problem cannot be solved by adjusting the thermostat, you should stop using the device.
How long should the Atlant refrigerator normally work?
In normal operation, the operating time ratio is approximately 30-40%. This means that out of one hour the compressor should work for about 20-25 minutes and rest for 35-40 minutes. However, these figures depend on the room temperature, chamber load and frequency of door opening. In summer, the operating time may increase, but pauses should still be present.
What to do if the refrigerator does not turn off after defrosting?
If you have just defrosted the refrigerator and turned it on, it can work without interruption for 4-6 hours to gain temperature. This is fine. But if more than 8-10 hours have passed and there is still no temperature, perhaps during defrosting you damaged the evaporator tubes (if you defrosted with a knife) or moisture got into the system, causing an ice jam. Also check that the door is closed tightly.
How often should you change the thermostat in the refrigerator?
A thermostat is a mechanical or electronic part that has its own life. On average, mechanical thermostats last 5-7 years, after which they can begin to “lie” or stick. Electronic sensors are usually more reliable, but are also susceptible to contact oxidation. There is no need to specifically change a working thermostat “for prevention”; replacement is made only when symptoms of a malfunction appear.