Owners of refrigeration equipment often encounter unclear symbols on the control panel, especially when it comes to classic models. If you see a scale from 1 to 4, a natural question arises: which value corresponds to the lowest temperature and which value corresponds to the highest? In household appliances, and in particular in refrigerators Atlant, the logic of the thermostat often differs from the intuitive one.
Incorrect settings can lead to spoilage of food or, conversely, to their freezing where this is not intended. Understanding the principle of operation mechanical thermostat will help you set the ideal operating mode without unnecessary experiments. In this article we will look at how exactly the regulator functions and what is hidden behind each number.
It is worth noting that the location of the regulator may vary depending on the series, but the numbering principle remains the same for most models with mechanical control. We will consider not only the values, but also external factors affecting the operation of the compressor.
The principle of operation of a mechanical thermostat
A mechanical thermostat is a device that opens and closes an electrical circuit depending on the temperature in the chamber. When you turn the knob, you physically change the tension of the bellows or bimetallic strip inside the sensor. The numbers on the scale do not indicate degrees Celsius, they indicate the cooling intensity.
In the refrigerator numbering system Atlant there is a direct relationship: the higher the number, the colder it will be inside the chamber. One means the minimum cold production, and four means the maximum compressor power. This is a critically important point, since many users mistakenly believe that number 1 is the “maximum”, by analogy with sound volume.
⚠️ Attention: Setting the regulator to the maximum value (number 4) does not mean that the temperature will instantly drop to -20°C. This is only a command to the compressor to work longer without interruptions until the sensor detects the achievement of a given threshold.
Constant operation at maximum leads to accelerated engine wear and the formation of ice. Understanding how thermostat reacts to your actions will extend the life of the equipment.
Deciphering the scale values from 1 to 4
Each position of the control knob corresponds to a certain temperature range inside the refrigerator compartment. However, these values are not absolute and depend on the ambient temperature and the amount of food. Let's look at what each position means.
Position “1” (Minimum). In this mode, the compressor turns on rarely and operates for a short time. The temperature in the chamber can fluctuate around +6...+8°C. This is an economical mode, suitable for storing drinks or when the refrigerator is half empty and is in a cool room.
Position “2” and “3” (Normal). These are operating ranges for most situations. It maintains a standard temperature of +3...+5°C, necessary for the safe storage of meat, dairy products and ready meals. Mode “3” can be used in the summer or when the camera is fully loaded.
Position "4" (Maximum). The compressor runs almost non-stop. Temperatures can drop to 0°C or below. You cannot use this mode all the time, as there is a risk of freezing food in the refrigerator compartment. This is an emergency or temporary mode.
Table of correspondence between modes and temperatures
For clarity, we have compiled a table that will help you navigate the settings. Remember that actual indicators may differ by 1-2 degrees depending on the serviceability of the seals and the fullness of the chambers.
| Value on the regulator | Operating mode | Approximate temperature (°C) | Recommendation for use |
|---|---|---|---|
| 1 | Minimum cooling | +6...+8°C | Low load, cool room |
| 2 | Economy mode | +4...+6°C | Standard storage, spring/autumn |
| 3 | Normal mode | +2...+4°C | Full loading, summer period |
| 4 | Maximum cooling | 0...+2°C | Only for a short time, heat above +30°C |
Using mode “4” for more than 6-8 hours can lead to freezing of the rear wall and impede the outflow of air. Thermal sensor in this mode requires constant control.
Factors influencing the temperature in the chamber
Even a correctly set number on the regulator does not guarantee the ideal temperature if external conditions are not taken into account. A refrigerator is a heat engine, and its efficiency directly depends on the environment in which it operates.
Room temperature plays a key role. If the kitchen is hot (above +25°C), even position “3” may not cope with cooling, and the compressor will wear out. In such cases, a short-term switch to “4” is allowed, but it is better to ensure a flow of fresh air to the condenser.
- 🌡️ Air temperature: the hotter the room, the higher the number should be set on the regulator, but within reasonable limits.
- 🍖 Loading with products: an empty refrigerator cools down faster, but holds the cold worse when opened doors. Warm products require mode “3” or “4” for rapid cooling.
- ❄️ Sealant condition: If the door rubber is worn out, the cold will go away and the thermostat will constantly keep the compressor on, regardless of the number.
⚠️ Attention: Never set the regulator to maximum (4) if the refrigerator is located next to a radiator or in direct sunlight. This will not save the situation, but is guaranteed to damage the compressor.
Why does the thermostat click?
The click is the sound of the contacts opening or closing inside the thermostat. This is normal operating sound. If the clicks become very frequent (every 1-2 minutes), it means that the wrong mode is selected or the seal of the chamber is broken.
How to properly set up the Atlant refrigerator
Setting the temperature is a process that requires consistency. Do not twist the handle randomly. First, determine the current problem: are the products spoiling or, conversely, freezing?
First, set the knob to the middle position (between 2 and 3). Let the refrigerator operate in this mode for at least 5-6 hours. Only after this can you take temperature measurements using an external thermometer, placing it in a glass of water on the middle shelf.
If the temperature is above +5°C, smoothly turn the knob towards an increase in the number. If below +2°C, reduce the value. Sudden changes in settings are harmful to the refrigerant and oil in the compressor.
☑️ Temperature setting algorithm
Common errors when adjusting
One of The most common mistake is to try to “increase the cold” by setting the regulator to 4 immediately after loading a large amount of warm food. This creates a colossal load on the system.
Another mistake is ignoring seasonality. In winter, when the apartment is cool, mode “3” may be excessive, and the food on the top shelf will freeze. In the summer, on the contrary, two may not be enough.
Users often forget that the position of the thermostat also affects the operation evaporator. Too low a temperature leads to the formation of an ice coat, which acts as a heat insulator, causing the compressor to hum even louder and work longer.
Frequently asked questions (FAQ)
What to do if food still freezes at number 3?
This may indicate a malfunction of the thermostat or a clogged capillary tube. Try lowering the value to 2 or 1.5. If the situation does not change during the day, you need to call a technician to replace the sensor.
Is it possible to leave the refrigerator on number 4 for the whole summer?
It is strictly not recommended. Mode “4” is intended for short-term use. Constant operation at the limit of capabilities will lead to overheating of the compressor windings and its combustion.
Where is the temperature regulator located in a two-chamber Atlanta?
In most models with mechanical control, there is only one regulator and is located inside the refrigeration chamber (usually at the top right or on the lampshade). It regulates the temperature in both compartments at once, changing the duration of the compressor operation.
Why do you need to wait after defrosting before turning it on?
After defrosting and washing the chambers, you need to wait 2-4 hours before turning it on. This is necessary so that the refrigerant and oil in the compressor are distributed throughout the system and the moisture is completely evaporated. Turning it on “hot” or with water inside can cause water hammer.