Correct temperature control in two-compressor models Atlant is a key factor ensuring long-term preservation of products and stable operation of equipment. Unlike single-circuit systems, here two independent units are responsible for cooling the refrigerator and freezer compartments, which allows you to set operating modes autonomously. This gives the user flexibility in controlling the microclimate inside the chambers, but requires an understanding of the principles of thermoregulation.
Incorrectly set parameters can lead to overfreezing of vegetables, the formation of excessive ice on the walls, or, conversely, to spoilage of perishable products due to insufficient cold. The owner must clearly understand what range of values is optimal for different types of food. Fine tuning Also directly affects energy consumption and compressor life.
In this article we will analyze in detail the algorithms for setting mechanical and electronic thermostats found in various series of household appliances from a Belarusian manufacturer. You will learn how to interpret indicators and adjustment knobs. Understanding these nuances will help you avoid common mistakes during operation.
The principle of operation of a two-compressor cooling system
The main difference between equipment with two motors is the complete autonomy of the circuits. While one compressor maintains sub-zero temperatures in the freezer, the second works to create positive values in the main compartment. This eliminates the mixing of odors and allows you to defrost one chamber while the second continues to operate normally.
Thermostats in such systems are also separated. Each of them reads the temperature only in its area of responsibility and sends a signal to turn on or off the corresponding engine. Electronic control system can combine this data, but physically the actuators often remain independent. This increases the reliability of the system as a whole.
It is important to understand that the load on the compressors is distributed unevenly depending on the load of the chambers and the frequency of door openings. If there is a lot of food in the freezer, it will take longer to cool down, requiring the motor to run longer. Refrigerator compartment this may already have reached the set value and go into standby mode.
⚠️ Attention: Trying to set the overall temperature for both chambers at the same time is only possible in models with a single electronic control unit. In devices with mechanical regulators, each circuit is adjusted strictly separately with its own knobs.
Separation of circuits allows you to optimize energy costs. For example, in winter, when the apartment is cool, the load on the main circuit is reduced and the motor turns on less often. The freezer continues to operate in intensive mode, since the difference between the temperature inside the chamber and the environment there is always large.
Location and types of temperature controllers
Depending on the series and year of manufacture, refrigerators Atlant are equipped with various types of controls. The most common are mechanical thermostats, which are rotary knobs with a digital scale. They are usually located on the top panel inside the refrigerator compartment or on the front part of the case.
More modern models are equipped with electronic displays. They display the temperature in degrees Celsius, making it easier to control. Adjustment is made using touch buttons or mechanical keys located next to the screen. Such systems often have a function to indicate an open door or an increase in temperature.
In some budget or older models, there may be a combination: a mechanical handle for the refrigerator compartment and a separate regulator or lack of direct adjustment for the freezer (where the mode is set by factory settings). However, in full-fledged two-compressor models, there are most often two independent mechanical thermostats.
- 🎛️ Mechanical knobs: have a scale from 1 to 7 (or Min to Max), where the number indicates the cooling intensity, not degrees.
- 💻 Electronic unit: displays the exact temperature, allows you to switch modes (for example, "Super freezing").
- 🔘 Hidden regulators: in some models of the freezer, access to the setting is possible only through a technological hole.
It is not difficult to determine the type of your regulator. If there are numbers in degrees on the panel, you have electronics in front of you. If you see a round pen with divisions without indicating the unit of measurement, this is mechanical thermostat. The principle of their operation is radically different, although they have the same goal.
Setting a mechanical thermostat
Control of a mechanical thermostat is based on the principle of changing the contact threshold. Turning the knob toward higher values (or toward Max) causes the compressor to work longer, lowering the temperature inside the chamber. The scale usually contains divisions from 1 to 7, where 1 is the minimum cooling, and 7 is the maximum.
For the refrigerator compartment, the optimal position of the handle is considered to be a value between 3 and 4. This ensures that the temperature is maintained in the range of +3..+5°C. If you set the regulator to 6 or 7, the food at the back wall may freeze, and the compressor will work almost continuously, which leads to overheating.
In the freezer, the mechanical regulator is often hidden. It can be located under a plastic cover on the inner wall or brought out in the form of a separate small handle. The principle is the same: higher numbers correspond to lower temperatures. The standard factory position usually corresponds to -18°C.
☑️ Setting the mechanical thermostat
After turning the knob, several hours must pass before the temperature background inside the chamber stabilizes. Sharp switching from minimum to maximum does not will give an instant result, but may create an extra load on the starting relay.
⚠️ Attention: Do not set the mechanical regulator to the maximum value (7 or Max) for continuous operation. This mode is intended only for the fast freezing function and should be used for a short time (no more than 24 hours), otherwise the compressor may fail.
Temperature adjustment via an electronic display
In models with electronic control, the adjustment process is more accurate and visual. The display shows the current temperature in real time. To change parameters, you usually use the Up and Down arrow buttons or the + and - symbols located next to the image of a snowflake (for the freezer) or a drop (for the refrigerator).
To enter the setting mode, you often need to briefly press or hold the button. The numbers start flashing on the screen, indicating that the system is ready to change the settings. You can set a specific value, for example, +4°C for the main compartment and -20°C for the freezer.
Electronics allows you to use additional functions, such as holiday mode or super freezing. In vacation mode, the refrigerator turns off the refrigerator compartment, leaving only the freezer to work, which saves energy. Super freezing forcibly turns on the freezer compressor for a long time to quickly cool a large batch of food.
| Parameter | Recommended value | Acceptable range | Influence on products |
|---|---|---|---|
| Refrigerator compartment | +4°C | +2..+5°C | Optimal for dairy products and meat |
| Freezer compartment | -18°C | -16..-24°C | Standard for long-term frozen storage |
| Freshness zone (if any) | 0°C | -1..+1°C | Maximum shelf life of vegetables and fish |
| Super Freeze mode | On temporarily | up to -24°C | Quick freezing, not for permanent use |
When setting up the electronic unit, it is worth considering that some models Atlant have protection against accidental pressing. If the numbers do not change after repeated presses, the control panel lock may be activated. To remove it, you usually need to hold the special button with the image of a lock for 3-5 seconds.
What to do if the display blinks?
Flashing numbers on the display often indicate an increase in the temperature in the chamber above the permissible threshold. This may be caused by warm food being loaded, the door not being closed properly, or a faulty sensor. If the blinking does not stop after several hours of normal operation, diagnostics are required.
Optimal temperature conditions for different products
There is no universal temperature for all products. Dairy products, meat, fish, vegetables and fruits require different storage conditions. Correct zoning inside the refrigerator compartment allows you to place them most efficiently, using the natural circulation of cold air.
The upper shelves are usually warmer, it is better to store ready-made dishes, drinks and products that do not require deep cooling there. The bottom shelves and the area above the vegetable drawers are the coldest places in the refrigerator compartment (not counting the fresh zone). Raw meat, fish and dairy products with a short shelf life should be placed there.
In the freezer, a temperature of -18°C is considered the gold standard. In this mode, bacteria do not multiply, and enzymatic processes in products practically stop. Reducing the temperature to -24°C is justified only when freezing fresh products, then the mode can be returned to standard.
- 🥛 Dairy products: require stable +2..+4°C. Place them on the middle shelves, away from the door, where the temperature fluctuates.
- 🥩 Raw meat and fish: store at 0..+2°C. The bottom shelf or special compartment is ideal.
- 🥦 Vegetables and fruits: prefer +5..+8°C and high humidity. The lower sealed boxes are intended for them.
Incorrect temperature settings can lead to vegetables starting to wither or, conversely, becoming covered with condensation and rotting. Meat at too high a temperature will quickly lose its presentation, and at too low, it will lose its fiber structure when defrosted. Balance is the key word.
Problem diagnosis and troubleshooting
If, after setting, the temperature in the chambers does not correspond to the set values, it is necessary to carry out diagnostics. First of all, check the tightness of the door seals. Even a small gap leads to a constant flow of warm air, and the refrigerator will not be able to gain cold while working continuously.
A frequent problem is the formation of an ice “coat” on the back wall of the refrigerator compartment or excessive ice buildup in the freezer. This may indicate a malfunction of the defrost system or that the temperature is set too low. In such cases, complete defrosting of the equipment is required within 10-12 hours.
If the compressor runs non-stop and the temperature does not drop, there may be more serious reasons: a refrigerant leak, a thermostat malfunction, or problems with the start relay. In dual-compressor models, it is important to determine which motor is humming constantly. If the motor of the refrigeration chamber is humming, and there is heat there, the problem is in this circuit.
⚠️ Attention: If you hear clicks, humming, but the compressor does not start, or it works continuously for more than 24 hours without shutting down, immediately unplug the device and contact a service center. Operation in this mode can lead to fire or permanent failure of the unit.
It is also worth checking the location of the refrigerator. If it stands close to a wall or radiator, the heat exchange of the condenser (grid at the back) is disrupted. This leads to inefficient operation of the cooling system, regardless of what settings you set on the control panel.
Why does the Atlant freeze in the refrigerator compartment? ice on the back wall?
The formation of ice on the back wall in models with a drip defrost system is a normal process. The water flows into the groove and evaporates. However, if there is too much ice, check to see if the drain hole is clogged. Also make sure that you do not place food close to the back wall, blocking the access of air.
Is it possible to turn off one compressor in a two-compressor refrigerator?
You can physically turn off one compressor only through repair intervention or a special switch (if it is provided for by the design, for example, the “Vacation” mode for the refrigerator compartment). You cannot simply unplug the cord of one motor, since they are powered from a common outlet. The electronics itself controls their activation as needed.
How often do you need to defrost a two-compressor Atlant?
Even with a No Frost or drip defrost system, it is recommended to carry out complete defrosting at least 1-2 times a year. This is necessary for hygiene, removing odors and checking the condition of the seals. If a layer of ice of more than 5-7 mm has formed in the freezer, defrosting is required immediately.
What does a flashing red indicator on the panel mean?
A flashing red indicator (often with an exclamation point or snowflake symbol) indicates that the temperature in the chamber has risen above a safe threshold. This happens when you turn it on for the first time, after defrosting or loading warm food. If the indicator is constantly on after 24 hours of operation, call a technician.