Many owners of household appliances often wonder why there are no usual degrees on the thermostat of their refrigerator Atlant Celsius, but only the mysterious numbers from 1 to 7. This scale can confuse anyone accustomed to precise electronic displays. Understanding the logic of the mechanical regulator is critical for proper storage of products and preventing their spoilage.
In this article we will look in detail at how to convert these conventional units into real temperature values. You will find out which number corresponds to the lowest temperature and which represents the minimum cooling. We will also discuss how external factors affect the operation of the compressor and why simply moving the handle can significantly save you money on electricity.
Incorrect thermostat settings are one of the most common reasons why users mistakenly believe that their refrigerator is broken. Before calling a specialist, you should carefully study the operating principle of your mechanical thermostat. Proper adjustment will extend the life of the compressor and provide ideal conditions for the freshness of products.
Principle of operation of a mechanical thermostat
Unlike modern models with electronic control, where the temperature is set with an accuracy of 0.1 degrees, in classic models Atlant use a mechanical system. The numbers on a scale of 1 to 7 do not directly represent degrees Celsius. They represent conventional divisions of cooling power, controlled by a bimetallic plate inside the thermostat.
The logic here is the opposite of what many are accustomed to in life: the higher number on the scale, the lower temperature inside the chamber. That is, position “1” means minimum cooling (warmest temperature), and position “7” means maximum compressor power (lowest, almost freezing temperature). This is a key point that is often overlooked.
The mechanical regulator responds to changes in evaporator temperature. When the air in the chamber heats up, the gas in the capillary tube expands and closes the contacts, starting the compressor. Having cooled down to a predetermined threshold, the system opens the circuit. The numbers on the knob simply change the spring tension, determining at what temperature the circuit will break.
⚠️ Attention: Setting the regulator to the maximum value (6 or 7) does not mean that the refrigerator will instantly cool food faster. This only forces the compressor to work longer without interruptions, which can lead to its overload and the formation of a “snow coat” on the rear wall.
Understanding this principle allows you to flexibly control the operation of the unit. For example, if you have just loaded a large amount of room temperature food, you can temporarily increase the cooling. However, such modes are not suitable for constant operation. Power scale created to adapt to external conditions, and not for extreme cooling.
Deciphering the scale values in degrees Celsius
Although the manufacturer does not indicate the exact degrees on the handle, empirically and based on the technical documentation, you can establish an approximate correspondence of the numbers to the actual temperature in the main chamber.
Below is a table that will help you navigate the values. It demonstrates the direct relationship between the position of the handle and the temperature conditions inside the refrigerator compartment.
| Knob position | Temperature conditions (approx.) | Compressor operating mode | Recommendation for use |
|---|---|---|---|
| 1 (Min) | +8..+10 °C | Rare inclusions | Summer, small amount of products |
| 3 (Avg.) | +4..+5 °C | Normal cycle | Standard mode (Autumn/Spring) |
| 5 (Max) | +0..+2 °C | Frequent switching on | Heat, full load |
| 6-7 | Below 0 °C (risk) | Continuous operation | Only for quick freezing |
The optimal handle position for everyday use is between 3 and 4. It is in this range that temperature mode is safest for most products, preventing the growth of bacteria and not causing vegetables or dairy products to freeze at the back wall.
If you set the control to 1 or 2, the temperature may rise above +7 °C, which is already a dangerous zone for storing perishable food. In such conditions, milk can turn sour in a few hours, and the meat begins to deteriorate. Therefore, in winter, when the apartment is cool, you can safely turn the knob towards lower values.
How to properly set the Atlant refrigerator for the season
Seasonality is the main factor influencing the setting of the mechanical thermostat. Many users make the mistake of leaving the settings unchanged all year round. However, changes in ambient temperature require adjustments to the operation of the refrigeration unit.
In the summer, when the temperature in the kitchen reaches +25..+30 °C, heat inflows increase significantly. To maintain a stable +4 °C inside the chamber, the compressor has to work harder. At this time of year, it is recommended to set the regulator to values 4 or 5. This will compensate for the heat and prevent food from defrosting.
In winter, the situation changes dramatically. If the room becomes cooler (for example +18 °C), the need for active cooling decreases. Moving the knob to divisions 2 or 3 will reduce the number of cycles of turning on the motor. This will not only save energy, but also reduce wear and tear on mechanical parts.
☑️ Seasonal adjustment checklist
It is also worth considering the fullness of the refrigerator. An empty refrigerator loses cold faster when the door is opened, but it also cools down faster. A full load requires a more stable and powerful operating mode, since the products have a high heat capacity. If you have loaded a lot of warm products after the holiday, temporarily increase the power, but do not forget to return the regulator back after 12-24 hours.
The influence of the position of the regulator on electricity consumption
The direct connection between the number on the thermostat and electricity bills is obvious, but is not always realized by users. Each increment upward (from 3 to 7) causes the compressor to work longer and turn on more often. The difference in energy consumption between modes “3” and “6” can reach 20-30%.
When you turn the knob to maximum, you are actually telling the system to ignore standard rest pauses. The compressor is trying to reach a temperature that it normally does not require. This leads to overuse of resources and increased operating noise of the equipment.
However, you also need to save wisely. Setting the regulator to “1” on a hot summer day will lead to the fact that the compressor may not turn on at all, considering that it is already cold enough inside (although in fact it is already +12 °C). The products will spoil, and the savings will turn out to be false. Power balance —that's what is important.
⚠️ Attention: If you notice that ice or a “fur coat” is constantly forming on the back wall of the refrigerator compartment, and food near the wall is freezing, this is a sure sign that the regulator is set to too high a value (5-7). Reduce power to fix the problem.
Typical errors when setting the temperature
One of the most common mistakes is an attempt to “speed up” the cooling of newly delivered products by turning the knob to the maximum. Users think it will cool the food faster. In practice, this only creates extreme conditions for the operation of the motor, while the rate of cooling of products depends on the area of their contact with cold air, and not just on the power of the compressor.
Another mistake is ignoring the location of the temperature sensor. In models Atlant with mechanical control, the sensor is often built into the housing or located in a specific area. If you have covered this area with pots or pressed food tightly against the back wall where the cold comes out, the thermostat will “think” that it is already cold in the chamber and will turn off the compressor ahead of time. As a result, other corners of the refrigerator will be warm.
You should also not often turn the knob back and forth in search of the “ideal”. Mechanical contacts inside the thermostat have their own switching life. Frequent and harsh cranking can cause wear or misalignment. Change the settings smoothly and give the system 2-3 hours to stabilize the temperature after each change.
- ❄️ Error: Set to "7" in winter. Result: The compressor runs non-stop, ice freezes, food at the back wall freezes.
- 🔥 Error: Set to "1" in summer. Result: The temperature inside rises above +8 °C, food spoils quickly, the compressor rarely turns on.
- 📦 Error: Closing the air ducts with products. Result: Air circulation is disrupted, the thermostat receives incorrect temperature data.
What will happen if the thermostat breaks down?
If the thermostat fails, the refrigerator may either stop turning on completely (food will leak) or work continuously without turning off (everything will freeze, electricity bills will increase). In Atlant mechanical models, this is one of the most common malfunctions that requires replacement of a part.
Diagnostics of problems: when adjustment is needed and when repair is needed
There are situations when adjusting the knob from 1 to 7 ceases to produce results. If you turn the regulator, and the nature of the motor does not change (it is either silent or hums without interruption), the problem may lie deeper. A mechanical thermostat is a consumable item, and over time its sensitivity decreases.
An alarming signal is a situation when even at the minimum value (1) the refrigerator turns off, but the food inside is warm. Or vice versa: at minimum it works non-stop. This indicates that the calibration has been knocked down or a freon leak has occurred, and no amount of twisting will help here - you need to call a technician to diagnose a cold-filled system.
It is also worth checking the door seals. If the elastic band has dried out and does not fit tightly, warm air constantly enters the chamber. The compressor will try to compensate for the heat, working to wear out. In this case, adjusting the temperature will not have an effect until the seal is replaced.
Why does the Atlant refrigerator not keep the temperature even at 7?
If at maximum cooling power the products are still warm, there are three possible reasons: a refrigerant leak (freon), a compressor malfunction (lost performance) or a clogged capillary system. Also, the reason may be a leak in the chamber due to a damaged seal.
Is it possible to replace a mechanical thermostat with an electronic one?
Theoretically it is possible, but it is technically difficult and economically impractical. It will require the introduction of electronic sensors, a controller and a display, which will require a major redesign. It is easier and cheaper to install a new original mechanical thermostat.
How often do you need to defrost the refrigerator at different settings?
When setting to 1-2, defrosting is rarely required (once every 6-8 months), since less moisture condenses. When operating in modes 5-7, the formation of a “coat” occurs faster, and the unit will have to be defrosted every 2-3 months so that heat transfer is not disturbed.
Correct operation of your equipment Atlant begins with understanding simple numbers on the control panel. Remember that the “golden mean” in the form of 3-4 divisions is the key to the long life of your refrigerator and the freshness of your products. Monitor seasonal changes, do not overload the unit and listen to its operation.