Refrigerators of the Belarusian brand Atlant are deservedly popular due to their reliability and affordability, however, even the highest quality equipment requires periodic adjustments for optimal operation. Adjusting the freezer compartment is not just a whim, but a necessary procedure to ensure the safety of food and extend the life of the compressor. Incorrectly set temperature can lead to excessive consumption of electricity or damage to stocks of meat and vegetables.
Owners are often faced with a situation where the food in the freezer either does not freeze enough, or, conversely, becomes covered with a thick layer of frost and loses its taste. Understanding the principles of operation thermostat and the heat removal system will allow you to fix these problems yourself without calling a technician. In this article we will look at the nuances of setting up various models, from classic two-chamber to modern systems No Frost.
Before taking active steps, it is important to determine the type of control of your refrigerator, since approaches to adjustment will differ significantly. Mechanical knobs require an intuitive understanding of the scale, while electronic panels allow you to set precise values in degrees Celsius. It is critically important to understand that a sharp change in temperature settings by more than 2-3 degrees at a time can lead to increased load on the compressor.
Principles of operation of the thermostat in Atlant refrigerators
The main element responsible for maintaining cold is the thermostat (thermostat). In mechanically controlled models, it is a device that responds to changes in temperature in the evaporator or inside the chamber. When the set threshold is reached, the contacts open and the compressor stops. When the temperature rises, the cycle repeats.
It is important to distinguish between the concepts of “operating mode” and “temperature”. Turning the knob does not instantly change the degrees, but shifts the threshold of the sensor. If you set the knob to maximum, the compressor will work almost non-stop, trying to achieve an ideal unattainable in domestic conditions, which leads to freezing of the evaporator.
- 🌡️ Adjustment range: usually ranges from -6°C to -24°C depending on the model.
- ⚙️ Hysteresis: temperature difference between turning on and off the compressor, which in Atlanta is about 2-4 degrees.
- 🔌 Dependence on the environment: The efficiency of the thermostat depends on the ambient temperature in the room.
Electronic control systems found in more expensive models Atlant XM-4425 or XM-6025use digital sensors. They provide more accurate maintenance of specified parameters, eliminating the human factor when interpreting the position of the mechanical handle. In such systems, adjustment occurs by selecting a specific numerical value on the display.
⚠️ Attention: If your refrigerator is equipped with a system No Frost, do not try to twist the hidden screws on the thermostat itself - they are calibrated at the factory and knocked down during assembly. Adjustment is only available through the control panel or replacing the entire unit.
Setting up a mechanical thermostat
Most classic models, such as series Atlant MHM 1700 or 1800, are equipped with a mechanical regulator. It is usually located inside the refrigerator compartment (top left) or on the cabinet above the door. The scale can be indicated by numbers from 1 to 7 or the words “Min” and “Max.”
Many users mistakenly believe that the number 7 means 7 degrees Celsius. In fact, in mechanical thermostats a higher number corresponds to a lower temperature (more powerful cooling). Position “1” or “Min” means that the compressor will turn off at a relatively high temperature inside the chamber, and “7” or “Max” will make it work almost continuously.
For standard operating conditions (temperature in the kitchen +18...+25°C), the middle position of the regulator is considered optimal. If the knob has 7 divisions, it is recommended to set it to position 3 or 4. This ensures a balance between freezing quality and energy consumption.
☑️ Checking the mechanical adjustment
If you notice that the food in the freezer has begun to thaw, try smoothly moving the knob one notch in the direction of increasing cold (for example, with 3 by 4). Do not expect an instant result - the refrigeration unit takes time (from 2 to 5 hours) to reach a new temperature mode.
Temperature adjustment in models with electronic control
Modern refrigerators Atlant series XM-6021, XM-6026 and others equipped with a display allow you to control the climate with an accuracy of a degree. The interface can be located on the outer panel of the door or hidden inside the chamber (on the top wall).
To enter the setup mode, a long press (3-5 seconds) is often required on the button with the image of a thermometer or a snowflake. Once the setting mode is activated, the indicators begin to flash, allowing you to use the Up and Down buttons to select the desired value. The standard recommendation for the freezer is minus 18°C.
| Mode | Temperature (°C) | Purpose |
|---|---|---|
| Standard | -18 | Long-term storage of frozen products |
| Eco / Minimum | -12...-14 | Short-term storage, energy saving |
| Super freezing | -24 | Fast freezing of fresh food (automatically turns off) |
| Vacation | +10...+15 (cold chamber) | Only the freezer works in the absence of the owners |
The function "Super Freeze"deserves special attention. In Atlant refrigerators, this mode often has a timer (usually 24-48 hours), after which the refrigerator automatically returns to the previously set settings. This protects against the user's forgetfulness, since constant operation at the maximum capacity is harmful to the equipment.
When setting up the electronic panel, it is important to consider that some models have a child lock. If the lock icon is lit on the display, any action you take to change the temperature will be ignored. To unlock, you usually need to hold the button with the key image for 3 seconds.
Features of setting up the No Frost system
Refrigerators Atlant with the system No Frost (or Full No Frost) have their own characteristics of air circulation. Unlike a crying evaporator, here the cold is distributed forcibly using a fan. Regulation in such models is aimed not only at temperature, but also at the frequency of defrost cycles.
It is important to understand that in the No Frost system, the temperature sensor is often located not inside the chamber, but in the air supply channel or on the evaporator. Therefore, the actual temperature of the food may differ from the reading on the display when the door is opened. Don't panic if the numbers change dramatically after closing the door - the system needs 10-15 minutes to stabilize the readings.
- ❄️ Uniformity: Cold air is forced from top to bottom, so the upper shelves may be colder than the lower ones.
- 💨 Ventilation: Do not block the openings of the air ducts with food, this will disrupt the thermostat settings.
- 🧊 Frost: A small amount of frost appears on the back wall in models No Frost may indicate a malfunction, and not the settings.
If you notice that the food in the freezer No Frost dries out (the “frost burn” effect), this may indicate that the temperature is too low or the seal is not tight enough, and not an error in the adjustment. In such cases, increasing the temperature by 1-2 degrees can solve the problem.
⚠️ Attention: In models with No Frost you should absolutely not try to speed up defrosting with a hair dryer or boiling water when cleaning - this can damage the plastic evaporator box and defrost sensors, which will lead to incorrect operation of the control system future.
Why does the temperature fluctuate in No Frost?
In No Frost systems, the air temperature fluctuates more than in static systems due to the cyclic operation of fans and defrosting. This is normal if the average temperature is kept within the specified limits.
The influence of loading and placement of products on temperature
Correct adjustment of the freezer is impossible without taking into account the thermophysical processes occurring inside. An empty freezer and a full freezer require different approaches to setup. Air is the worst conductor of cold, so in an empty chamber the thermostat may operate less often, but when the door is opened, the temperature will drop sharply.
A filled freezer operates more stable. Frozen foods themselves are cold accumulators. If you have just loaded a large amount of fresh food to freeze, the standard settings may not be enough. In this case, it is necessary to temporarily activate the maximum power mode or super freezing.
There is an “air gap” rule. Even in the freezer, food should not lie close to the back wall, where the evaporator or channel outlet is located No Frost. Blocking the circulation will cause the temperature sensor to “think” that the cold has been reached and turn off the compressor while the food at the door remains unfrozen.
The organization of space also affects efficiency. It is recommended to distribute products so that those most in need of deep freezing (meat, fish, berries) are closer to the source of cold (usually the upper part or back wall), and semi-finished products or long-term storage products are lower or at the door.
Diagnosis of problems after adjustment
There are situations when even correct adjustment does not give the expected result. If you set the knob to maximum and the temperature does not drop, or vice versa - everything turns into an ice ball, the problem may not lie in the settings. Diagnostics will help you understand whether it’s worth continuing to turn the regulator or whether it’s time to call service.
One of the simplest tests is checking the operation of the compressor. When the regulator is set to minimum (Min or 1), the compressor should turn off. If it hums continuously even at minimum settings, the thermostat itself may be faulty (the contacts are stuck) or there is a lack of refrigerant in the system.
- 🔊 Constant noise: The compressor does not turn off - a sign of a freon leak or a thermostat failure.
- 🧊 Furnish on the walls: A thick layer of ice during normal operation of the compressor indicates a loose door fit.
- 💧 Water below: May indicate a clogged drain hole, and not a problem with the temperature.
It is also worth paying attention to seasonality. In the summer, when the apartment is hot, the refrigerator works more intensely. In winter, if the room is cool (below +16°C), single-compressor models Atlant may stop turning on the freezer, since they “do not have enough” heat to start the cycle (this is true for older models where the thermostat is in the refrigerator compartment).
Frequently asked questions (FAQ)
Why did the food freeze only after 24 hours after adjusting the temperature?
The refrigerator takes time to stabilize the thermal mode, especially if you have changed the settings significantly or loaded with a lot of warm food. Complete freezing of a large volume can take up to 24 hours.
Is it possible to keep the Atlant freezer constantly in the “Super Freeze” mode?
It is strictly not recommended. This mode is intended for short-term use. Constant operation at the limit will lead to rapid wear of the compressor and excessive energy consumption.
What does the flashing temperature indicator on the display mean?
Flashing usually indicates that the current temperature in the chamber is above the set norm. This can be immediately after turning on, after defrosting, or when the door is not tightly closed.
Do you need to change the settings in winter if the room is cold?
For most modern models Atlant with a separate freezer circuit, this is not required. However, if you have an old single-compressor refrigerator and the freezer has stopped freezing at a low temperature in the room, you may need the help of a specialist in installing a winter kit.
How to reset the electronics settings to factory settings?
Usually, this requires unplugging the refrigerator from the mains for 10-15 minutes. In some models with a display, the combination of buttons is described in the instructions (often pressing the defrost and temperature setting buttons simultaneously).