Two-chamber refrigerators of the Belarusian manufacturer Atlant are deservedly popular due to their reliability and maintainability. However, many owners encounter difficulties during the initial setup or the need to adjust the temperature after defrosting. Incorrectly set parameters can lead to food spoilage or excessive energy consumption.
In this article we will analyze in detail the design of thermostats used in the equipment of this brand and explain how to find a balance between effective cooling and energy efficiency. You will learn to distinguish between mechanical and electronic control systems, and also understand when it is worth interfering with the operation of the unit yourself, and when it is better to call a specialist.
Adjusting the temperature is not just turning a knob, but understanding the physical processes occurring inside the chambers. Fine tuning allows you to extend the life of the compressor and preserve the freshness of products for the longest possible period. Let's figure out how your refrigerator works from the inside.
The principle of operation of the thermostat in Atlant refrigerators
The main element responsible for maintaining cold in classic models is a mechanical thermostat. It is a device that closes or opens an electrical circuit depending on the temperature of the sensing element. Refrigerators Atlant most often use thermostats produced by Tamov or Danfoss, which are highly reliable.
The principle of operation is based on expansion and compression of gas or liquid located in a capillary tube, which is attached to the evaporator. When the temperature rises above a preset threshold, the contacts close, triggering compressor. When the lower limit is reached, the contacts open and the motor stops. Understanding this cycle is important for proper adjustment.
⚠️ Attention: The thermostat capillary tube is a very thin and fragile element. When trying to replace or deep clean the refrigerator yourself, do not under any circumstances apply force to the tube coming out of the regulator body, as damage to it will lead to freon leakage and failure of the equipment.
There are two main types of temperature control in the line Atlant. The first models are equipped with a mechanical handle inside the refrigerator compartment, while more modern ones are equipped with an electronic control panel on the outer door. Mechanics require periodic calibration, while electronics work according to a given algorithm.
Decoding the mechanical scale thermostat
Owners of models with mechanical control often wonder: what do the numbers on the regulator handle mean? The scale usually ranges from 1 to 7 (or Min to Max). It is important to remember the main rule: the number does not indicate degrees Celsius. It indicates the cooling intensity.
The higher the number you set, the lower the temperature inside the chamber will be. That is, position “7” or “Max” means maximum freezing mode, in which the compressor will work almost without interruption. Position “1” or “Min” corresponds to minimum cooling, when the motor is rarely turned on.
For everyday use at standard room temperature (+18...+25°C), the optimal position of the handle is between marks 3 and 4. This ensures a balance in which food does not freeze at the back wall, and the required sub-zero temperature is maintained in the freezer.
If you notice that butter begins to melt in the refrigerator compartment or condensation appears, it makes sense to turn the knob one notch towards an increase in the number. And vice versa, if the products at the back wall are covered with “frost”, the regulator needs to be shifted towards reduction.
Setting up the electronic panel control
Modern two-chamber refrigerators Atlant XM-44xx series and newer are often equipped with an electronic control system. On the outside of the door there is a panel with a display and buttons. Here the adjustment occurs more precisely, in steps of 1 degree Celsius.
To change parameters, you usually need to press the mode selection button (often indicated as “Mode” or has a snowflake/thermometer icon), and then use the “+” and “-” buttons to set the desired value. In some models, entering the menu requires a long press of the button for 3-5 seconds.
Electronics allows you to independently adjust the temperature in the refrigerator and freezer compartments. Standard factory settings are usually +3...+5°C for the upper chamber and -18°C for the lower chamber. These values are considered optimal for storing most products.
It is worth noting that when changing the settings, the refrigerator may not immediately start working in the new mode. The electronic control unit takes time (usually from 10 to 30 minutes) to analyze the current state and give a command to the compressor.
⚠️ Attention: Technical characteristics and interface of control panels may vary depending on the specific modification and year of manufacture. Always check the instructions supplied with your device, as button combinations may vary.
What does the flashing indicator mean?
If the temperature icon on the control panel is flashing or a beep is heard, this means that the actual temperature inside the chambers is higher than the set standard. This often happens immediately after loading a large amount of warm food or after defrosting. The system simply reports that it has not yet reached operating mode.
Optimal temperature conditions for different products
Correct temperature settings directly affect the shelf life of products. In a two-chamber refrigerator Atlant the temperature field is distributed unevenly, especially in models with a drip defrosting system. Knowing these features will help you use space rationally.
On the shelves at the back wall, where the cold air from the evaporator comes out, the temperature is always lower. This is a better place to store foods that require extreme refrigeration or those that you plan to use in the coming days. On door shelves, the temperature is higher due to contact with warm air when opening.
Below is a table of recommended temperatures for various product groups:
| Product type | Recommended temperature | Shelf life (approximate) | Placement area |
|---|---|---|---|
| Fresh meat, fish | 0...+2°C | 1-2 days | Bottom shelf, at the back wall |
| Dairy products | +2...+4°C | 3-5 days | Middle shelves |
| Ready meals | +2...+5°C | 2-3 days | Middle/top shelves |
| Vegetables and fruits | +4...+8°C | 3-7 days | Bottom drawer (freshness zone) |
It is important not to overload the refrigerator. Air circulation is a key factor in maintaining uniform temperature. If you fill the chamber with food to capacity, cold air will not be able to wash all surfaces, and “heat pockets” will appear in some areas where food will begin to deteriorate faster.
Seasonal adjustment and the influence of external factors
Ambient temperature has a significant impact on the operation of refrigeration equipment. In the summer, when the apartment is hot, heat inflows increase, and the compressor needs to work longer to maintain the desired cold inside. In winter the situation is reversed.
Models with a mechanical thermostat sometimes require seasonal adjustments. If in summer you kept the knob at “3”, then in winter, with the heating running, you may need to move it to “4”. Conversely, if the room becomes cooler, the cooling intensity can be reduced.
- 🌡️ Summer period: Make sure that the refrigerator is not located next to a radiator or in direct sunlight. In hot weather, it is recommended not to set the minimum cooling values so as not to overload the motor.
- ❄️ Winter period: If the refrigerator is in an unheated room (on a balcony or in a country house), its operation may be impaired. The oil in the compressor thickens, and starting becomes impossible or dangerous for the engine.
- 🚪 Opening frequency: If the refrigerator is used by a large family and the door is opened often, it makes sense to set the temperature 1 degree lower than standard to compensate for the loss of cold.
There is a common misconception that in winter you can not turn on the refrigerator at all or set it to minimum. This is only true for models with a single compressor and mechanical control, and then with reservations. In modern conditions climate class equipment determines the temperature range at which it is guaranteed to operate.
⚠️ Attention: Do not install the refrigerator Atlant in rooms where the temperature drops below +10°C or rises above +32°C (unless otherwise specified in passport). Operation outside the climate class leads to rapid wear of the compressor and loss of warranty.
Diagnostics of problems with temperature conditions
Sometimes users turn the regulator knob, but the temperature does not change. This may indicate a malfunction. Before calling a specialist, it is worth conducting an initial diagnosis. Often the problem lies not in the thermostat, but in the accompanying elements.
The first thing to check is the tightness of the sealing rubber on the door. If the rubber has dried out or become dirty, the cold will escape and the refrigerator will work non-stop, not reaching the set temperature. Also check if anything is preventing the door from closing tightly.
The second important point is the condition of the evaporator. In refrigerators with a drip system (“crying” evaporator), there should not be a thick layer of ice (“coat”) on the back wall. If there is ice, then the defrost cycle is broken and the cold simply does not enter the chamber effectively. In this case, adjusting the thermostat will not help - defrosting is needed.
☑️ Diagnosis of temperature problems
If the thermostat is out of order, its contacts may “stick” in the “on” position (the refrigerator freezes constantly, everything freezes) or “off” (the refrigerator is silent, food spoils). In mechanical models, a sign of a malfunction is often the absence of a characteristic click when turning the knob.
Is it possible to replace the thermostat yourself?
Theoretically, yes, if you have skills in working with electricians and tools. However, this will require completely defrosting the refrigerator, removing the inner panel, carefully removing the sensitive capillary tube and installing a new sensor. An error when installing the tube will lead to incorrect temperature readings.
Frequently asked questions (FAQ)
Why does food freeze at the back wall in the Atlant refrigerator?
This is typical for models with a drip defrosting system. The rear wall is the evaporator, and its temperature is always lower than the rest of the volume. Try not to place food close to the back wall, leaving a gap of 2-3 cm for air circulation. Also check if the thermostat knob is set to the maximum value.
How to understand that the thermostat in the Atlant refrigerator is faulty?
Main signs: the refrigerator does not turn on at all (no clicks or buzzing), or works non-stop, turning everything into an ice ball. Also, a sign of a breakdown may be incorrect operation: you set the knob to “3”, but it only becomes colder at “7”, or vice versa, the modes do not change at all.
Is it possible to use the two-chamber Atlant as a freezer?
No, it is not possible. The freezer in two-chamber models usually has a volume of 60-100 liters and is designed for storing frozen foods. Turning the entire refrigerator into a freezer by turning the regulator to the maximum will lead to overheating and combustion of the compressor, since it is not designed for continuous operation in this mode.
What is the normal temperature in the Atlant freezer?
According to modern standards, the optimal temperature for long-term storage of food in the freezer is -18°C. At this temperature, most bacteria do not multiply, and products retain their properties for up to 12 months. A short-term increase to -12...-14°C is allowed, but shortens the shelf life.