Correct setting of climate control equipment is not just a matter of comfort, but a necessity for maintaining the quality of products and extending the service life of the compressor. Owners of Belarusian-made household appliances are often faced with the need to accurately calibrate operating modes, especially after the first installation or seasonal changes. Atlant refrigerator It is known for its reliability, but its thermoregulation requires an understanding of the principles of operation of mechanical and electronic control systems.
Many users mistakenly believe that it is enough to turn turn the knob to maximum to achieve the perfect cold. In fact, incorrect setting can lead to freezing of the evaporator, excessive energy consumption and food spoilage due to too low a temperature in the main chamber. In this material, we will analyze in detail how to set the optimal values for different models, including two-chamber and three-chamber units. Incorrect setting The differences between models with and electronic panels are significant, but the basic principles of thermodynamics remain the same for all devices. Understanding how your specific unit works will help you avoid common operating mistakes. Below are detailed algorithms of actions for various series of equipment.
Differences between models with mechanical control and electronic panels are essential, but the basic principles of thermodynamics remain the same for all devices. Understanding how your specific unit works will help you avoid common operating mistakes. Below are detailed algorithms of actions for various series of equipment.
Principles of operation of the thermostat in different models
The basis of climate control in most brand models is thermostat or an electronic control module. In classic versions, such as series MHM 1700 or 4000, a mechanical regulator is used, which is a rotary knob with divisions from 1 to 7 (or from Min to Max). Here the numbers do not indicate degrees Celsius, but indicate the intensity of the compressor.
Electronic models, for example, series XM 6025, are equipped with a digital display where the temperature is set with an accuracy of one degree. This allows the user to see the actual readings of the sensors. Mechanical knob works on the principle of opening the circuit when a certain temperature inside the chamber is reached, while the electronic controller constantly monitors the environment and sends impulses to start the motor.
⚠️ Attention: When setting the mechanical thermostat, remember that the value “7” (or Max) means continuous operation of the compressor without shutdown. This is not a freezing mode, but an emergency mode, which can lead to engine breakdown after several hours of operation.
It is important to consider that in two-compressor models, the refrigeration and freezer chambers are adjusted independently of each other. If you have a single-compressor unit with a system No Frost or drip defrosting, then adjustment is most often carried out only for the refrigerator compartment, since the temperature in the freezer depends on the operating time of the compressor set by the main thermostat.
Why do the numbers on the handle not match the degrees?
Mechanical thermostat Factory calibrated for average conditions. Numbers 1-7 are conditional cooling power coefficients and not a direct temperature scale. Value “3” usually corresponds to +4...+5°C inside the chamber, but this depends on the ambient temperature in the kitchen.
Adjusting the temperature in the refrigerator compartment
The optimal temperature in the main compartment is critical for the safety of fresh food. According to sanitary standards and manufacturer's recommendations, the temperature in the central part of the refrigerator compartment should be in the range from +2°C to +5°C. It is under these conditions that the growth of bacteria slows down, but the products do not freeze.
For models with mechanical control (series MHM 162, 1704, 1801), it is recommended to set the thermostat knob to the middle position. Usually this is a division 3 or 4 out of seven possible ones. If you notice that the food in the back of the chamber is starting to freeze, the regulator should be turned counterclockwise one notch. And vice versa, if the milk quickly sours, the power needs to be added.
- ❄️ Division
1(Min) - minimal cooling, the temperature inside can reach +8...+10°C, suitable for storing drinks. - ❄️ Division
3-4—standard operating mode for everyday use at full load. - ❄️ Division
6-7(Max)—intensive cooling mode, used only for quick freezing of fresh food or at high room temperatures.
In electronic models, settings are made through the control panel located on the door or in the upper part of the case. By pressing the button Temperature or Mode, you select a zone (refrigerator compartment) and change the value using the arrows. Here the ideal value is +3°C or +4°Cas it provides a balance between energy consumption and storage quality.
Do not forget about the influence of the external environment. In the summer, when the temperature in the kitchen rises, the thermostat has to work harder. During such periods, it is allowed to shift the regulator towards higher values, but not further than division 5. In winter, if the kitchen is not heated, the power should be reduced so that the compressor can take the necessary breaks.
Setting the freezer and Super Freeze mode
The freezer requires maintaining a temperature no higher -18°C. It is at these indicators that products can be stored for up to 12 months without loss of taste and vitamins. In Atlant models with electronic control, you can see the current temperature and set the target value directly, usually in the range from -6°C to -24°C.
For mechanical models the situation is more complicated. Since there is often no separate regulator for the freezer, the temperature in it depends on the operating cycle of the main compressor. The more often and longer the motor runs (the higher the number on the refrigerator thermostat), the colder it is in the freezer. However, for quick freezing of fresh products (meat, fish, berries), a special mode is provided Super Freeze (Super Freeze).
Activation of the mode Super Freeze switches the compressor to continuous operation mode, ignoring the readings of the refrigerator thermostat. The corresponding indicator on the control panel lights up. This mode is necessary when you load a large amount of warm products so that they froze quickly and do not have time to spoil existing stocks.
| Operating mode | Temperature in the freezer | Duration of use | Purpose |
|---|---|---|---|
| Standard | -18°C... -20°C | Continuous | Storage of frozen foods |
| Super Freeze | -22°C... -24°C | Up to 24 hours | Fresh food freezing |
| Economy / Min | -12°C... -15°C | Short-term | Storing food for up to 2 weeks |
⚠️ Attention: Do not leave the mode Super Freeze on for longer than 24-48 hours. Long-term operation without shutting down leads to overheating of the compressor and can cause failure of the start relay or freezing of the air exhaust channels.
☑️ Quick freezing algorithm
Features of setting up single-compressor models
Atlant single-compressor refrigerators (for example, popular series MHM 2808, 2819) have one refrigerant circulation system. This means that the cold is generated in the evaporator of the freezer and partially supplied to the refrigerator compartment. The adjustment here occurs only through the thermostat of the refrigeration chamber, but it affects the operation of the entire system.
The main feature of such models is the dependence of the temperature in the freezer on the settings of the main compartment. If you turn the thermostat knob to minimum (1), the compressor will switch off frequently. In the refrigerator compartment it will be +8°C, and in the freezer the temperature can rise to -10°C, which is not enough for long-term storage. Conversely, when set to maximum (7), the refrigerator will be +1°C, and the freezer will be -24°C.
For stable operation of a single-compressor unit, it is necessary to find a “golden mean”. Usually this is the position of the handle between 3 and 4. In this mode, the compressor operating cycle provides sufficient cooling of the freezer to -18°C, while a comfortable +4...+5°C is maintained in the refrigerator compartment.
- 🔧 Adjustment is made with only one thermostat knob.
- 🔧 When fully loaded with products, the operating cycles become longer.
- 🔧 It is not recommended to completely fill the freezer with warm foods at once.
If you notice that when the regulator is in the normal position, it is warm in the refrigerator, but the ice is melting in the freezer, this may indicate a freon leak or a malfunction of the thermostat, and not a setting error. In such cases, simply twisting the handle to the maximum will not solve the problem, but will only accelerate the wear of the equipment.
The influence of loading and external factors on temperature
The temperature regulator reacts to the air temperature inside the chamber, but does not take into account the thermal inertia of the products. An empty refrigerator cools down faster, but also heats up faster when the door is opened. A fully loaded unit holds the cold better, but requires more time and energy for initial cooling.
An important factor is the ambient temperature. The instructions for Atlant refrigerators state that the equipment is designed to operate in climate class N (normal), that is, at room temperatures from +16°C to +32°C. If the kitchen is colder than +10°C (for example, in the winter at the dacha), the compressor may not turn on at all, since it “seems” that it is already cold inside. As a result, the food in the refrigerator compartment will defrost.
The frequency of opening the doors also plays a role. Each opening lets in warm, moist air. Electronics or mechanics will try to compensate for this by increasing power. If you often open the door, it makes sense to slightly increase the cooling power by moving the regulator towards higher values.
⚠️ Attention: Installing the refrigerator close to the wall or in a niche without gaps for ventilation disrupts the heat transfer of the condenser. This leads to the compressor working to wear out, not reaching the set temperature, even if the regulator is turned to the maximum.
Diagnostics and elimination (FAQ)
Even with proper configuration, users may encounter situations that are perceived as malfunctions. Often the problem lies in the nuances of operation or misunderstanding of the operating principles of a particular model. Below are answers to the most frequently asked questions related to temperature conditions.
If you have followed all the recommendations, checked the seals and made sure that the equipment is working properly, but the temperature still does not hold, it may be the refrigerant or sensors. However, before calling the wizard, it is worth eliminating the simple configuration errors described above. Self-diagnosis helps save time and money.
Why do vegetables freeze at the back wall in the refrigerator compartment?
This is typical for a drip defrosting system. At the back wall there is a crying evaporator, the temperature of which periodically drops below zero. If the food touches the wall, it freezes. Solution: move the food from the back wall 2-3 cm and check if the drainage hole is clogged.
The Atlant refrigerator does not hold the temperature, the regulator is at maximum. What to do?
If the compressor runs constantly, but there is no cold, there is likely a freon leak or a clogged capillary tube. If the compressor is silent, the thermostat or start relay has burned out. Solution: diagnosis by a technician is required; you cannot add freon yourself.
Is it possible to keep a refrigerator on an unheated balcony in winter?
No. The oils in the compressor thicken, and the thermostat may not turn on the motor, since the air temperature will be higher than inside the chamber. This will lead to defrosting and breakdown of the compressor when trying to start. Solution: operation only in a heated room according to the climate class.
How to understand that the thermostat is faulty?
Symptoms: the compressor does not turn on in general (even when tapping on the handle), or it works non-stop, freezing all food into ice. A chaotic on/off mode is also possible. Solution: Replacing the thermostat.
Do I need to defrost the refrigerator before changing the temperature settings?
No, you can change the thermostat settings at any time during operation of the device. However, if you transfer the refrigerator to long-term preservation or transportation mode, defrosting and drying are required. Solution: Adjust the temperature safely, the system adapts in 2-4 hours.
Thermostat service life
The average service life of a mechanical thermostat is 5-7 years of intensive use. Electronic sensors last longer, but are more sensitive to power surges in the network.