Two-compressor models of the brand's household appliances Atlant have earned a reputation as reliable and economical devices that can operate for years without failure. Their key advantage is the complete autonomy of the refrigerator and freezer compartments, which allows you to regulate the climate in each compartment independently of each other. However, it is precisely this feature that often raises questions among users who are faced with managing two thermostats simultaneously for the first time.
Correct setting of the temperature regime is not just a matter of comfort, but a necessity to ensure the safety of products and the energy efficiency of the device. Values that are too low will lead to excessive consumption of electricity and damage to the structure of vegetables, while values that are too high can provoke the growth of bacteria. In this article we will look in detail at how to find the “golden mean” for your two-compressor refrigerator.
Owners often confuse the adjustment scales or try to set the same values, without taking into account the difference in the required storage conditions for different types of products. Understanding the principles of operation of thermostats will help you avoid common mistakes and extend the service life of compressors.
The principle of operation of two compressors and thermostats
Unlike single-compressor analogues, where the cold is distributed throughout all chambers by one unit, in two-compressor models Atlant two independent cooling circuits are installed. This means that one motor-compressor is responsible for cooling the refrigerator compartment, and the second is responsible for freezing. Each circuit is controlled through its own thermostat.
The location of the regulators is usually standard: they are located inside the refrigeration chamber, often in the upper right or left corner. On the control panel you will see two knobs or two scales with numbers. One of them is responsible for the main chamber, the second for the freezer. It is important not to confuse them, since the operating temperature ranges in these compartments are radically different.
⚠️ Attention: Never try to adjust the temperature if the refrigerator has just been defrosted or turned on for the first time after purchase. Allow the device to run a full cycle (at least 2-3 hours) to stabilize the freon pressure before interfering with the settings.
Mechanical thermostats operate on the principle of opening the electrical circuit when the set temperature is reached. When you turn the knob, you change the tension of the spring, which responds to the expansion or contraction of the sensing element. The numbers on the scale are not degrees Celsius, but conventional units of cooling power.
Why are two-compressor models quieter?
Two-compressor refrigerators are quieter, since each motor turns on less often and runs for less time than one powerful compressor, which is forced to service two circuits at once.
Decoding the thermostat scale and values
The greatest difficulty for users is the lack of direct gradation in degrees on mechanical handles. The thermostat scale in refrigerators Atlant is usually marked with numbers from 1 to 7 (or from Min to Max). Understanding this logic is critical for proper operation.
The higher the number you set, the lower the temperature inside the chamber will be. This is counterintuitive for many: position “7” means maximum compressor power and deepest freezing, and position “1” means minimum cooling. The “0” or “Off” position completely cuts off the power supply to the compressor.
For the refrigeration chamber, the range corresponding to the numbers 3 or 4 is considered optimal. In this mode, the temperature is kept within +2..+4°C. For the freezer, if it is controlled by a separate handle, the values may be similar, but the physical temperature will drop to -18..-24°C due to the design features of the evaporator.
It is worth noting that the scale is nonlinear. The difference between positions 1 and 2 may be less than between 6 and 7. A sharp turn of the knob immediately to maximum will cause compressor to work without stopping, which will lead to freezing of the rear wall and increased wear of parts.
Optimal temperature conditions for storage
In order for food to remain fresh for as long as possible, it is necessary to maintain strictly defined temperature conditions. For the refrigerator compartment, the standard range is +2°C to +5°C. With such indicators, most bacteria slow down their vital activity, but vegetables do not lose moisture and do not freeze.
The freezer requires more stringent conditions. International standards recommend maintaining temperatures no higher than -18°C. It is at this value that meat, fish and semi-finished products can be stored for up to 12 months without loss of taste. If you set the regulator to low cooling, the shelf life will be reduced to 2-3 weeks.
| Product type | Recommended zone | Optimal temperature | Shelf life (approximate) |
|---|---|---|---|
| Fresh meat/fish | Zero zone / Bottom of the refrigerator | 0..+2°C | 1-3 days |
| Dairy products | Middle shelf | +2..+4°C | 3-7 days |
| Vegetables and fruits | Drawers below | +4..+6°C | 3-14 days |
| Frozen semi-finished products | Freezer | -18..-24°C | up to 12 months |
At the back wall, where evaporatoris located, it is always colder than at the door. Therefore, it is better to place perishable foods deeper, and drinks and sauces on the door shelves.
Step-by-step instructions: how to set the temperature
The process of setting up a two-compressor refrigerator Atlant does not require special tools, but requires a sequence of actions. First you need to prepare the device: make sure that it stands level, the doors close tightly, and there are no obstacles to air circulation inside.
Find two thermostats inside the refrigerator compartment. They are usually labeled or color coded (blue for cold, red for warm, or just numbers). If there are no signatures, refer to the instructions for a specific model, since the location may vary in series XCD, XM or KX.
☑️ Initial setup algorithm
Rotate the handles smoothly, without sudden jerks. The thermostat mechanism is sensitive to shock. After setting the values to “3” or “4” (middle value), leave the refrigerator empty for 6-8 hours. Only after this can you check the result with a thermometer and adjust the settings.
⚠️ Attention: Do not fill the refrigerator with food immediately after changing the settings. The thermal inertia of a large mass of products will distort the readings, and the compressor may not turn off in time, which will lead to the formation of a “fur coat.”
If you notice that the food in the refrigerator compartment is freezing (especially at the back wall), reduce the value on the thermostat by one notch. If the milk quickly turns sour and the vegetables wither, increase the cooling power.
Factors affecting the operation of the refrigerator
Even the correctly set temperature can malfunction if external factors are not taken into account. Ambient temperature plays a huge role. If the refrigerator is in the kitchen, where it is +30°C in summer, or, conversely, in an unheated garage at +10°C, the standard thermostat settings may not work correctly.
Loading density also affects the climate inside. An empty refrigerator cools faster, but it also loses cold faster when the door is opened. A unit completely filled with food requires a more powerful compressor for initial cooling, but holds the temperature better.
The frequency of door opening is another critical factor. Each opening lets in warm, moist air, forcing compressor to turn on more often. In families with a large number of household members, it makes sense to set the temperature 0.5-1 division higher than in households of one person.
The technical condition also makes its own adjustments. A condenser on the back wall clogged with dust, a worn seal or a lack of refrigerant can lead to the fact that even at maximum the temperature in the chamber will not be low enough.
Frequent errors when setting up and their consequences
One of the most common mistakes is setting the regulator immediately to the maximum value (7 or Max) in the hope of cooling the food faster. This is a misconception: the compressor will work continuously, the temperature will drop below zero, the food will freeze, and an ice crust will form on the walls, which will disrupt heat transfer.
The second mistake is ignoring seasonality. In winter, when the apartment is cool, and in summer, when it is hot, the heat exchange changes. Many users forget to adjust the thermostat knob depending on the time of year, leaving summer settings in winter, which leads to insufficient cooling.
⚠️ Attention: If you hear that the refrigerator starts to turn on too often or, conversely, almost does not turn off after changing the settings, this may not indicate an adjustment error, but a malfunction of the thermostat or a freon leak.
Another mistake is placing hot or warm foods. This causes a sharp jump in temperature and humidity, forcing the system to work at its limit. In two-compressor models, this can lead to desynchronization of the circuits.
Diagnostics of problems through temperature conditions
The behavior of a refrigerator can tell a lot about its technical condition. If you have set the correct value, more than a day has passed, and the temperature does not meet expectations, it is worth conducting diagnostics. For example, if the refrigerator compartment is warm (+10°C and above), and the compressor is silent, the thermostat or start relay may have failed.
If the compressor hums continuously without turning off, and “snow” or ice has formed in the chamber, and the temperature is normal or even low, this is a sign that the tightness of the circuit is broken or clogged capillary In two-compressor models Atlant this situation often indicates that one of the circuits has lost refrigerant.
The opposite situation: the compressor is working, but there is no cold anywhere. This may be a sign of a freon leak or a breakdown of the compressor motor itself. In such cases, simply reconfiguring the thermostat knobs will not help - you need to call a technician.
It is also worth paying attention to the temperature difference between the upper and lower shelves. In models with a drip defrosting system (and most mechanical ones belong to them), a difference of 2-3 degrees between top and bottom is the norm. If the difference is 10 degrees or more, the air circulation channels may be clogged or the fan is faulty (if the model is with NoFrost). Atlantov refer to them) a difference of 2-3 degrees between top and bottom is the norm. If the difference is 10 degrees or more, the air circulation channels may be clogged or the fan may be faulty (if the model has NoFrost).
Why do food freeze at the back wall in the refrigerator compartment?
This is normal for refrigerators with a drip defrosting system. The rear wall is the evaporator, and ice freezes on it while the compressor is running. When the compressor turns off, the ice melts and flows into the drain. If food touches the wall, it freezes. Solution: move the products away from the back wall by 2-3 cm.
Is it possible to operate a two-compressor Atlant if one compressor does not work?
Technically, the refrigerator will work by cooling only one chamber (the one whose compressor is working). However, the second circuit will remain warm. You can operate the device in this mode temporarily, but it is ineffective. If the freezer compressor is faulty, the food in it will melt. If the compressor is in the refrigerator compartment, it will be warm there. Repair is required.
How often do you need to change the thermostat settings?
Under ideal conditions, the settings are set once when you first turn them on and no longer require intervention. They need to be changed only when the season changes (winter/summer), changes in the filling of the refrigerator (for example, before the holidays) or when the temperature in the room changes.
What does the flashing indicator or red light on the panel mean (if any)?
In some models Atlant with electronic control or indication, the red light signals an increase in temperature in the cell is above normal. This may be caused by warm food being loaded, the door not closing properly, or a malfunction. If the light is constantly on after cooling, diagnostics is needed.
Why does a two-compressor refrigerator consume less energy?
Savings are achieved due to the fact that each compressor is turned on only when it needs to cool its chamber. In single-compressor models, one powerful motor is forced to pump cold through the entire volume, often working with overload. Flow separation allows the use of less powerful and more efficient engines.