Modern household appliances, such as Atlant refrigerator, seem easy to operate until the need for fine-tuning or troubleshooting arises. Understanding the principles of operation of the cooling system allows the owner not only to save energy, but also to significantly extend the life of expensive equipment. Temperature controller, or thermostat, is the heart of this system, providing a stable microclimate for storing food.
In this article we Let's look in detail at how the cold is controlled in various models of the Belarusian manufacturer. You will learn about the differences between mechanical and electronic systems, learn how to correctly set the parameters and understand when intervention in the operation of the device is really necessary. It is critically important to know that in models with one compressor and the No Frost system, changing the setting in the refrigerator compartment automatically affects the temperature in the freezer.
We will analyze the physical processes occurring inside the chambers, and then how thermostat reads data from sensors. This knowledge will help you avoid common mistakes, such as overloading the compressor or, conversely, insufficient cooling, leading to food spoilage. Let's dive into the technical nuances.
The principle of operation of the thermostat and sensors
The basis of the climate control system in refrigerators Atlant is the thermostat. In classic models, this is a mechanical device that opens and closes an electrical circuit depending on the temperature in the evaporator or air environment. When the air heats up above a predetermined threshold, the contacts close, starting compressor.
In more modern electronically controlled units, thermal sensors (thermistors) are used. They are resistors whose resistance changes with temperature. The electronic module constantly reads these readings and decides whether to turn the cooling circuit on or off. This ensures higher accuracy of climate control.
It is important to understand the difference between adjustment in chambers with Direct Cool (drip system) and No Frost. In drip systems, the sensor is often hidden behind a plastic panel or built into the evaporator, while in ice-free systems it measures the temperature of the circulating air. An error in determining the type of system can lead to incorrect diagnosis.
Technical detail
Thermostat hysteresis: The thermostat does not turn on and turns off the compressor at the same temperature. The difference between the on and off temperatures is called hysteresis and is usually 2-4 degrees Celsius. This prevents too frequent engine starts, which saves the life of the compressor.
Mechanical regulators require periodic calibration, since over time the spring can stretch and the contacts can burn. Electronic systems do not have this drawback, but are sensitive to power surges in the network. Stable operation thermostat is the key to the long life of your refrigerator.
Mechanical adjustment: models with one cooling chamber
In most classic models Atlant with one compressor, control is carried out through a mechanical switch located inside the refrigerator compartment. It usually looks like a rotary knob with divisions from 0 to 7 or from Min to Max. Here lies the main mistake of users: the numbers on the scale do not mean degrees Celsius.
The numerical values indicate the degree of cooling. Setting the handle to position 1 (or Min) means minimal cold production, that is, the chamber will be warmer. Turning to the side 7 (or Max) causes the compressor to work longer and harder, lowering the temperature to the limit. In 0 mode, the equipment is completely disconnected from the control network.
- 🌡️ Division 2-3 is the optimal mode for everyday storage of most products with an average load.
- ❄️ Division 4-5 — It is recommended to use in the summer or when the chamber is fully loaded with fresh products.
- ⚡ Division 6-7 —maximum cold mode, not recommended for continuous operation due to high compressor wear.
Remember that in single-circuit systems you cannot independently adjust the temperature in the freezer and refrigerator compartments. By increasing the cold in one compartment, you automatically change the settings in another. Therefore, finding the “golden mean” is the key task of the owner.
Electronic control and dual-circuit systems
Modern refrigerators Atlant are often equipped with an electronic control unit with a digital display. Such models allow you to set the exact temperature in degrees Celsius for each chamber separately. This is possible due to the presence of two independent refrigerant circulation circuits or the use of additional solenoid valves.
To configure parameters on such models, you must use touch buttons or mechanical keys on the front panel. The interface may differ depending on the series, but the logic remains the same. Usually you need to press and hold the setting button for several seconds until the numbers start flashing.
After activating the setting mode, with short presses you select the desired value. Electronics it itself monitors the moment the set temperature is reached and turns off the compressor or shuts off the freon supply to a specific chamber. This eliminates the human factor and errors associated with “guessing” the position of the handle.
⚠️ Attention: If there is a power outage, electronic models with a display can reset the settings to factory settings. After resuming the power supply, be sure to check whether your preferred settings are preserved to avoid defrosting the food.
The advantage of digital control is the ability to activate special modes such as “Super Freeze” or “Vacation”. These functions temporarily change the operating algorithm thermostat to achieve specific goals, which cannot be achieved on mechanical models.
Optimal temperature conditions for different products
Correct setting temperatures directly affects the safety of products. Not all foods require the same conditions, and understanding this will help you rationalize the space in your refrigerator. In the refrigerator compartment Atlant the temperature may vary depending on the shelf.
The upper shelves are usually warmer, the lower ones are colder. The door is the warmest place, subject to changes when opening. Knowing this, you can properly organize your supplies, even if the accuracy of the thermostat leaves much to be desired.
| Product type | Recommended temperature | Storage area in the refrigerator |
|---|---|---|
| Meat, fish (chilled) | 0...+2 °C | Bottom shelf (freshness zone) |
| Dairy products, eggs | +2...+5 °C | Middle shelves |
| Vegetables, fruits | +5...+8 °C | Bottom drawers (containers) |
| Ready dishes, sauces | +3...+6 °C | Middle or top shelves |
For the freezer, the optimal mode is -18 °C. At this temperature, bacteria do not multiply, and products can be stored for months without loss of quality. Setting lower values (for example -24 °C) is only justified when fast freezing fresh food.
Location of the regulator and instructions for setting
Before you start adjusting, you need to know exactly where the control element is located in your model Atlant. In older models, the thermostat knob was often located inside the refrigerator compartment, at the top right, sometimes hidden by the lampshade. In new models, the controls are moved outside.
The process of setting the mechanical regulator is simple: turn the knob to the desired position. However, this must be done smoothly, without sudden jerks, so as not to damage the internal spring. After changing the position, wait 4-6 hours for the temperature to stabilize before checking again.
For electronic panels, the sequence of actions is as follows:
- Press the setting button (often indicated by a thermometer or asterisk icon).
- Wait for the temperature indicator to flash.
- Use the Up or Down buttons to change the value.
- Confirm the selection or simply wait until the screen stops flashing.
☑️ Checking the correct setting
If after setting you notice that the refrigerator is not working correctly (for example, turns off or does not freeze), perhaps the problem is not in the settings, but in a malfunction of the thermostat or freon leak. In this case, simple adjustment will not help.
Diagnostics of thermostat malfunctions
How to understand that temperature regulator has failed? There are several obvious signs. If the refrigerator compressor Atlant works continuously, without turning off even at minimum settings, and a “coat” of ice forms in the chamber, this is a sure sign of sticking contacts or loss of sensitivity of the sensor.
The opposite situation - the compressor does not turn on at all, although it is warm in the chamber. Or it turns on for a short time and immediately stalls. This may indicate an open circuit inside the thermostat. In mechanical models, sometimes it helps to carefully turn the handle from the extreme position to the extreme several times to “develop” the contacts.
⚠️ Attention: Before any diagnostics involving disassembling the case or checking the contacts with a multimeter, be sure to disconnect the refrigerator from the power supply! Working with electricity requires compliance with safety rules.
In electronic models, a malfunction of the temperature sensor is often indicated by error codes on the display. For example, a flashing temperature indicator or alphanumeric combinations (F1, F2, etc.). The decoding of the specific code for your model Atlant should be found in the instructions, as it may differ.
Frequently asked questions (FAQ)
Why does ice freeze on the back wall in the Atlant refrigerator?
This is a normal process for a drip defrosting system, if the ice manages to melt during a pause in the compressor operation. If a thick fur coat forms, check the tightness of the door, the integrity of the seal and the position of the thermostat (perhaps it is turned up to the maximum).
What position of the regulator knob should you choose in the summer?
In the summer, when the ambient temperature is high, it is more difficult for the refrigerator to give off heat. It is recommended to set the regulator to the middle position (3-4), but not to the maximum. Also make sure that the refrigerator is away from the battery and direct sunlight.
Is it possible to replace a mechanical thermostat with an electronic one?
Theoretically it is possible, but this requires a deep rework of the control system, installation of a new unit and sensors. The manufacturer Atlant such upgrades are not provided and can lead to compressor failure.
What to do if the Atlant refrigerator does not gain temperature after defrosting?
After complete defrosting, let the refrigerator run for 2-3 hours without loading food. If during this time the temperature has not dropped to normal, and the compressor is working, there may be a refrigerant leak or a clogged capillary tube, and not a problem in the regulator.