The situation when products in refrigerator compartment begin to deteriorate faster than expected, and the water in the jug does not cool to the required degree, is familiar to many owners of household appliances technology. If you are wondering how to lower the temperature in the Atlant refrigerator, it means that the current performance of the unit does not suit you. Most often, the problem is solved by simply reconfiguring thermostat or changing the operating mode, but in some cases a more in-depth diagnosis of the system is required.
Incorrect temperature conditions may be caused by many factors: from a banal overload of the chamber with products to serious malfunctions of the compressor or a refrigerant leak. It is important to understand that the brand’s equipment Atlant is famous for its reliability, but even it requires proper maintenance and setup. In this article we will analyze all the possible causes of insufficient cooling and methods for eliminating them.
Before calling a technician or panicking, you need to conduct an independent analysis of the operation of the device. This will save time and money, as well as extend the life of your refrigerator. We will look at the settings for various models, including those equipped with electronic controls and mechanical regulators.
Basic principles of operation of the Atlant cooling system
To effectively control the temperature, you need to understand how the cooling process works. Most Atlant models use compression systemwhere the refrigerant circulates in a closed circuit, taking heat from the chambers and releasing it into the environment. This process is controlled through thermostat or an electronic unit that reads sensor readings.
When you turn the control knob to a higher value or select a lower number on the display, you give the command to the system to work harder. The compressor turns on more often or runs longer without turning off for standard pauses. This leads to active selection of heat and, accordingly temperature decrease inside the chambers.
However, it is worth considering that there are physical limits to the efficiency of the equipment. If the ambient temperature (room temperature) is too high, the refrigerator may simply not be able to cope with the load, regardless of the settings. In such cases, heat transfer is broken, and the equipment works for wear without achieving the desired result.
⚠️ Attention: Constant operation of the compressor at maximum settings without interruption can lead to its overheating and failure. Do not set the minimum possible values unless necessary.
It is also important to distinguish between the concepts of “evaporator temperature” and “air temperature in the chamber”. Sensors can take readings at different points, and air circulation plays a key role here. If the air channels are clogged with food, the cold will not be distributed evenly, creating a false impression of insufficient cooling.
Setting the mechanical thermostat
In classic Atlant models, such as the series MHM 1700 or MHM 2808, control is carried out using a mechanical regulator. It is usually located inside the refrigerator compartment, at the top, often hidden behind a plastic cover or located next to the light bulb. The scale of such a regulator contains numbers from 1 to 7 (or from Min to Max).
The logic of this mechanism is simple, but often causes confusion among users. The numbers on the scale do not indicate degrees Celsius, but the work intensity compressor. The higher the number you set, the lower the temperature inside the chamber will be. That is, position “7” or “Max” means maximum cooling, and “1” or “Min” means minimum.
To lower the temperature, you need to turn the control knob clockwise towards higher values. After changing settings, the system takes time to stabilize. Typically this process takes from 2 to 4 hours, depending on chamber loading and the ambient temperature.
If you turn the knob to maximum, but the temperature does not drop, perhaps the problem lies not in the settings, but in a malfunction of the thermostat itself or a freon leak. Mechanical thermostats can lose calibration over time, and their readings no longer correspond to reality.
Temperature adjustment in electronically controlled models
Modern Atlant refrigerators, for example, series XM 4425 or XM 6025, are equipped with an electronic control unit with information output to a display located on the outer door or inside the chamber. Here the adjustment is made much more accurately, since you see the actual readings degrees Celsius.
To change parameters you must use touch or push-button switches. Typically, the procedure goes like this: press the mode button (often indicated as “Mode” or a snowflake/thermometer icon), select the compartment (refrigerator or freezer), and then use the “Up” or “Down” buttons to set the desired value. In the refrigerator compartment, the standard range is from +3 to +7 degrees.
Electronics allows you to activate special modes that temporarily enhance cooling. For example, the Super Cool mode causes the compressor to run continuously for a certain amount of time, quickly lowering the temperature after loading a large amount of warm food. A similar “Super Freeze” mode (Super Freeze) is available for the freezer.
| Operating mode | Temperature range | Recommended use | Influence on energy consumption |
|---|---|---|---|
| Economy (Eco) | +5..+7 °C | Everyday storage, small quantities of products | Low |
| Standard (Normal) | +3..+5 °C | Optimal mode for most products | Average |
| Cooling (Cool) | +2..+3 °C | Hot weather, storage of perishable products | High |
| Super cooling | Up to +2 °C (temporarily) | Fast cooling after loading | Maximum |
If you try to reset the settings or during power surges in the network, a malfunction may occur controller. In such cases, sometimes a complete reset of the settings helps by disconnecting the device from the power supply for 10–15 minutes.
The influence of the “Vacation” mode and other functions
One of the common reasons for insufficiently low temperatures is the accidentally activated “Holiday” mode. This mode is designed specifically for situations when the owners leave for a long period of time and the refrigerator remains empty. In this mode refrigerator compartment either turns off completely or switches to maintaining a temperature of about +10..+15 degrees, which prevents the appearance of mold, but is not suitable for storing fresh food.
If the corresponding indicator is on the display and the food is spoiling, immediately turn off this mode. Deactivation instructions vary by model: you usually need to (hold) the mode button for a few seconds or press a key combination. In some Atlant models with one compressor, the refrigeration chamber is turned off in the “Vacation” mode by setting the regulator to the “0” or “Off” position.
Why does the freezer not turn off in vacation mode?
In vacation mode, only the top camera is turned off to save energy. The bottom freezer continues to operate as normal, preserving frozen supplies. Complete shutdown of the entire appliance requires defrosting and drying.
It is also worth checking whether the quick defrost function or other service modes are activated, which may temporarily limit the operation of the compressor. In models with No Frost the system may be in a defrost cycle, during which the temperature rises briefly, but this is a normal process that does not require intervention.
If you have turned off all special modes, and the temperature still does not drop, you should pay attention to the tightness of the door. The sensor can detect heat from the outside if the seal is worn out or the door is warped, and give a command for increased cooling, which the system physically cannot provide.
Technical reasons for insufficient cooling
When adjusting the settings does not produce results, the reason lies in a technical malfunction. One of the most common problems is refrigerant leak (freon). If there is little gas in the system, the compressor works continuously, trying to increase the temperature, but does not produce cold. In this case, the back wall of the refrigerator may remain warm or only partially heat up.
Another common cause is a compressor malfunction. If the motor hums but does not start, or starts for a few seconds and clicks when it turns off, this is a sign of problems with the start relay or motor windings. It is also possible clogged capillary tubethrough which freon circulates. In this case, the circulation of the refrigerant is disrupted and the cold does not enter the evaporator.
⚠️ Attention: If you hear that the compressor has been running non-stop for several hours, and the temperature in the chamber is above +10 degrees, immediately unplug the refrigerator and call a technician. Long-term operation in this mode can “kill” the motor.
Do not forget about the defrosting system in No Frost models. If the timer or defrost sensor fails, the evaporator becomes coated with ice. The air stops circulating and the cold does not enter the chamber. Outwardly, this may look like a lack of cold, although the compressor is working properly. Defrost heating element, timer or defrost sensor, the evaporator becomes coated with ice. The air stops circulating and the cold does not enter the chamber. Outwardly, this may look like a lack of cold, although the compressor is working properly.
☑️ Diagnostics before calling a technician
Rules operation for effective cooling
Sometimes the problem is solved not by repair, but by changing operating habits. An overloaded refrigerator is a common cause of poor cooling. If you've packed your shelves to capacity, air can't circulate between products. In systems No Frost this is critical, since cold air is forced by a fan and must flow freely around the contents.
Place products so that they do not block the ventilation openings. They are usually located on the back wall or at the top of the camera. Also, do not place hot or warm food inside - this sharply increases the internal temperature and causes the compressor to work overload, which in the long run reduces its life.
It is also important to consider the location of the refrigerator itself in the room. If it stands close to the wall or in a niche without gaps, heat from the condenser (grid at the back) is not removed. This leads to overheating of the system and a decrease in cooling efficiency. The minimum gap from the back wall should be at least 5–7 cm.
Regularly check the condition of the rubber seals on the doors. If they are dirty or damaged, warm air from the room constantly enters the chamber. Wipe the seal with a soft cloth and soapy water. If the rubber has become hard or cracked, it must be replaced, since it will be impossible to adjust the temperature in such a refrigerator.
Why does the Atlant refrigerator not freeze after defrosting?
If after complete defrosting (which lasted at least 24 hours) the refrigerator did not start to freeze, the system may have been damaged when the ice was chipped with sharp objects. The thermostat could also be faulty and stuck in the off position. In rare cases, during defrosting, hidden leaks are revealed that were previously preserved by ice.
Is it possible to replace freon in the refrigerator yourself?
No, it is strictly forbidden to do this yourself without a license and special equipment. Freon is under pressure, and replacing it requires evacuation of the system and precise dosage of oil and refrigerant. Unprofessional replacement will lead to damage to the compressor and final breakdown of the unit.
What to do if ice freezes in the Atlant refrigerator, but the temperature is high?
This is a classic sign of a malfunction of the defrost system (in No Frost) or a freon leak (in drip models). In the No Frost system, ice blocks the air supply channels. In drip models, a “fur coat” on the back wall indicates that freon is circulating, but there is not enough of it, or heat transfer is impaired. Diagnostics by a specialist is required.
How often do you need to defrost the Atlant refrigerator?
Models with manual defrosting require shutdown once every 4-6 months, when the ice thickness reaches 5 mm. Drip defrosting systems (“crying wall”) require preventive defrosting once a year for hygiene. No Frost systems theoretically do not require defrosting, but manufacturers recommend doing this once a year for washing and disinfection.