Correct temperature setting is a key factor for long-term preservation of products and correct operation of the compressor. Owners of equipment Atlant with a system No Frost often face the need for manual calibration after the first installation or seasonal changes.
Incorrect parameters can lead to excessive power consumption or damage stocks. Understanding the principles of operation of electromechanical and electronic thermostats will allow you to avoid typical operating errors.
In this article we will analyze in detail the algorithms of action for various models, including two-chamber units of the series Xpert and classic options. You will learn how to interpret indicator signals and when a technician's intervention is required.
Principles of operation of the No Frost system in Atlant refrigerators
The system No Frost (literally “without frost”) in technology Atlant is built on forced circulation of cold air. Unlike the drip system, here moisture does not settle on the walls, but is removed through drainage channels, which requires a stable temperature regime to prevent overdrying of products.
The main control element is defrost sensor and the evaporator, located in a hidden chamber behind the back wall of the freezer compartment. The air is driven by a fan and distributed through the channels into the refrigerator compartment, providing uniform cooling without areas with high temperatures.
It is important to understand that setting the regulator too low causes the compressor to work almost non-stop. This leads to the formation of an ice coat on the evaporator, which the standard defrost system does not have time to remove, which ultimately blocks the air supply channels.
⚠️ Attention: If you hear a constant hum of the fan even when the door is closed, this may indicate that the air duct damper is stuck in the open position due to incorrect temperature settings.
Operating efficiency circulation fan directly depends on the temperature difference that you set. The optimal mode allows the system to pause, during which the evaporator is defrosted by heating elements.
Adjustment of the electromechanical thermostat
In classic models Atlant control is carried out using a rotary knob located inside the refrigerator compartment. The scale usually contains numbers from 1 to 7 (or from Min to Max), where 1 corresponds to the minimum cold, and 7 to the maximum.
Many users mistakenly believe that the number on the handle indicates degrees Celsius. In fact, these are conventional units of cooling power. Setting the knob to the “7” or “Max” position puts the refrigerator into continuous operation mode, which is only permissible for the “Super Freeze” mode for a short time.
For everyday use, it is recommended to set the knob to the middle position, usually numbers 3 or 4. This ensures a balance between food safety and compressor energy consumption.
The knob should be turned smoothly, without sudden jerks, so as not to damage the internal contact group of the thermostat. After changing the position, you need to wait several hours for the temperature background inside the chambers to stabilize.
Setting up the electronic control unit
Modern models Atlant, such as series Xpert or Premium, are equipped with an electronic display and touch buttons. Here, the settings are made with an accuracy of a degree, which allows you to flexibly control the climate inside the chambers.
To enter the settings mode, you usually need to press and hold the button Set or Mode for 3-5 seconds. The refrigerator compartment indicator will flash on the display, allowing you to change the value using the Up or Down buttons.
After setting the desired temperature for the refrigerator compartment, you must press the confirm button again to proceed to the freezer compartment setting. Some models allow you to activate the "Vacation"mode, which maintains minimal cold in the refrigerator compartment when the freezer is turned off.
| Operating mode | HK temperature | Temperature MK | Description |
|---|---|---|---|
| Standard | +4°C | -18°C | Optimal for daily use |
| Eco | +6°C | -18°C | Energy saving |
| Super freezing | +4°C | -24°C | For fresh products |
| Holiday | +10...+15°C | Off | Long absence |
⚠️ Attention: In models with electronic control, after a power outage, the settings may be reset to factory settings. Always check the set values after resuming the current supply.
Some control units have a child lock function for the buttons. If the display does not respond to touch, check to see if the lock indicator is illuminated. Unlocking often requires a long press on a special button or key combination.
Optimal temperature conditions for different products
There is no universal temperature, since different groups of products require different storage conditions. In refrigerators Atlant s No Frost thanks to uniform airflow, all shelves can be used effectively, but zones with different temperatures are still present.
On the top shelf, where the temperature is slightly higher, it is recommended to store ready-made dishes, confectionery and packaged products. The bottom shelves and the area at the back wall are the coldest - this is an ideal place to store raw meat, fish and dairy products with a short shelf life.
The door is the warmest zone, subject to temperature changes when opened. It is better to place sauces, drinks and products here that are not critical to slight fluctuations in degrees.
- 🥩 Raw meat and fish: require temperatures from 0°C to +2°C, place them on the bottom shelf closer to the back wall.
- 🥛 Dairy products: optimal range +2°C...+4°C, store on the middle shelves away from the door.
- 🥬 Vegetables and fruits: prefer +4°C...+8°C, use special boxes with humidity control (if provided by the model).
- 🍺 Drinks: can be stored at +6°C...+10°C, ideal for door shelves.
Correct distribution of products helps the compressor operate in a gentle manner. If you have loaded a lot of warm products, temporarily turn on the mode "Super Freeze" or set the regulator to maximum for 2-3 hours, then return to standard settings.
Why can't you put hot food in No Frost?
Hot the pan will create a powerful upward flow of warm air. In the No Frost system, this air will instantly spread throughout all chambers, causing the sensors to record a sharp jump in temperature. The compressor will go into overload mode, and an ice lump may form on the evaporator, which will block ventilation.
Seasonal adjustment and external factors
Ambient temperature significantly affects the operation of refrigeration equipment. In the summer, when the apartment is hot, heat exchange in the condenser (grid at the back) is difficult, and the refrigerator takes more time to achieve the set parameters.
In winter, the situation is the opposite: if the refrigerator is located against a cold wall or in an unheated hallway, the compressor may not turn on for a long time. For models Atlant with one compressor, this can lead to defrosting of the freezer compartment, since the cold comes there from the refrigeration compartment.
It is important to ensure adequate ventilation around the case. The gap between the back of the refrigerator and the wall should be at least 5-7 cm. If the appliance is built into a niche, the presence of upper and lower ventilation gaps is critical for heat removal.
⚠️ Attention: Do not install the refrigerator next to radiators or a gas stove without a heat-insulating screen. Local overheating can simulate an increase in temperature inside, causing the thermostat to keep the compressor on constantly.
When the season changes, it is recommended to revise the settings. In the fall, with the beginning of the heating season, a slight correction towards lower temperatures may be required, and in the spring a return to standard values.
Diagnostics of temperature problems
If you have set the correct values, but the food spoils or, conversely, freezes in the refrigerator, the equipment may be faulty. The first sign of problems is often an unnaturally long or, conversely, too short operation of the compressor.
In models with electronics, faults are indicated by error codes on the display. For example, flashing lights may indicate problems with the temperature sensors or defrost system. Mechanical models signal problems by the absence of characteristic clicks of the thermostat.
Check the tightness of the door sealing rubber. If the magnetic circuit is damaged or dirty, warm air enters the chamber, and the system No Frost cannot cope with its cooling, working for wear.
☑️ Diagnostics of temperature conditions
For accurate diagnostics, use an external thermometer by placing it in a glass of water on the middle shelf. Measurements should be taken during the day with the door completely closed to get an objective picture.
Frequently asked questions (FAQ)
Why does ice freeze in the Atlant No Frost refrigerator if there should be no frost there?
System No Frost prevents ice from forming on food, but ice can build up on the internal evaporator if the defrost heating element, timer or sensor is faulty. The cause may also be a clogged drain hole through which water should drain. In this case, you need to defrost the refrigerator for 24 hours and call a technician.
Which number to set on the regulator in the summer and which in the winter?
In the summer, at high ambient temperatures, it is recommended to set the mechanical type regulator to values 2-3 (closer to the minimum) so as not to overload the compressor. In winter, if the room is cool, you can set it to 4-5. The main rule: the hotter the room, the less cooling power should be in order to avoid the compressor getting stuck.
What does the flashing Alarm indicator on the display mean?
The indicator Alarm signals that the temperature in the chamber is rising above the permissible limit. This can happen when you turn it on for the first time, after loading a large amount of warm food, or when the door is not tightly closed. If the indicator lights up constantly after the mode has stabilized, check the settings or contact service.
Is it possible to disable the No Frost mode and use it like a regular refrigerator?
Structurally disable the air circulation and defrost system in models Atlant with marking No Frost impossible. This is a built-in engineering feature. Attempts to seal the ducts or turn off the fan will lead to compressor breakdown and food spoilage due to uneven cooling.