Refrigeration equipment of the brand Biryusa has been serving as a reliable assistant in the kitchens of millions of apartments for decades. However, even the highest quality equipment requires periodic adjustments to operating modes, especially when seasons change or the volume of loaded products changes. Many owners are faced with the question of how to correctly change the temperature regime so that the food does not spoil and the compressor does not work in vain.
The adjustment process directly depends on the type of control installed in your model. Older and budget options use mechanical thermostatwhere adjustments are made by turning the knob, while modern models can be equipped electronically controlled with a digital display. Understanding the operating principle of your device is the first step to proper operation.
Incorrectly set parameters can lead to freezing of vegetables or, conversely, spoilage of meat products due to insufficient cold. In this article we will analyze in detail the algorithms of action for different series of refrigerators, explain the meaning of the numbers on the scale and answer frequently asked questions about operation.
Principles of operation of the Biryusa cooling system
The operation of most refrigerators Biryusa is based on a compression system, where the refrigerant circulates in a closed circuit, taking heat from the chambers. Temperature control is essentially controlling the operating time of the compressor. The longer it works, the lower the temperature inside drops.
It is important to distinguish between the concepts temperature in the chamber and cooling power. By turning the knob, you do not set specific degrees Celsius (unless you have a model with electronics), but change the engine shutdown threshold. This is a subtle nuance that is often overlooked during the initial setup.
The system can be single-compressor or two-compressor. In the first case, one motor serves both compartments, and a change in mode in one chamber indirectly affects the other. Two-compressor models Biryusa allow you to configure independent temperature zoneswhich gives more flexibility in storing different types of products.
⚠️ Attention: Abrupt changes in settings thermostat (for example, from minimum to maximum) can cause an overload of the electrical network or the compressor start relay. Make adjustments smoothly.
Temperature stability depends not only on the settings, but also on the tightness of the circuit and the number of loaded products. A half-empty refrigerator will cool faster, but it will also heat up more intensely when the door is opened than a fully loaded one.
Setting a mechanical thermostat (series 6, 8, 10, 11, 13, 14)
The most common type of control in classic models is mechanical. The regulator is usually a rotary knob located inside the refrigerator compartment, often in the upper right corner or above the door. The scale can contain numbers from 1 to 5, 1 to 7 or the designation “Min/Max”.
The golden rule applies here: a larger number corresponds to a lower temperature. That is, if you turn the knob to the “7” or “Max” mark, the refrigerator will freeze as much as possible. On the contrary, one or "Min" means the minimum cooling power.
For everyday use, it is recommended to set the regulator to the middle position. Usually these are numbers 3 or 4 on a seven-step scale. This ensures a balance between food safety and energy consumption.
Why are the numbers in reverse order?
The numbering on mechanical thermostats indicates the tension of the spring inside the sensor. The higher the number, the more tension the spring is, which requires greater expansion of the sensing element (capillary tube) to open the contacts. Expansion occurs at a lower temperature, hence the logic: the larger the number, the colder it is in the chamber.
If you notice that the ice on the back wall in the refrigerator compartment has begun to thaw or the food has begun to quickly deteriorate, you need to move the regulator one notch towards increasing the value. After changing the position of the handle, the compressor may not turn on immediately, but after 10-15 minutes - this is normal to protect against frequent starts.
☑️ Checking the mechanical settings
Adjustment in models with electronic control
Modern refrigerators Biryusa, such as series RF or Smart, are equipped with electronic control units. Here, the setting occurs through a panel with buttons and a display located on the outside of the door or inside the chamber.
In such systems you set a specific temperature in degrees Celsius. The standard mode for the refrigerator compartment is +4°C...+5°C, and for the freezer - -18°C...-20°C. The change is made by pressing buttons with arrows or snowflake symbols.
Electronics allows you to activate special modes that temporarily change the operating algorithm:
- ❄️ Super Freeze — turns on the compressor for continuous operation to quickly freeze fresh food.
- 🍺 Vacation mode — turns off the refrigerator compartment, leaving only the freezer running to save energy.
- 🔒 Lock —protects the settings from accidental changes by children.
In case of power failure, electronic models Biryusa often save the latest settings in memory. However, if the voltage surge was severe, you may need to reset to factory settings, which is usually done by long-pressing the power button or a key combination.
Table of recommended temperature conditions
Different groups of products require different storage conditions. Choosing the wrong regimen will result in loss of vitamins or food texture. Below is a table of optimal settings for different zones of the refrigerator.
| Type of food | Recommended temperature | Storage area | Shelf life (approximate) |
|---|---|---|---|
| Fresh meat, fish | 0°C ... +2°C | Zero zone / Bottom | 1-3 days |
| Dairy products | +2°C ... +6°C | Middle shelf | 3-7 days |
| Vegetables, fruits | +4°C ... +8°C | Drawers below | 3-10 days |
| Frozen semi-finished products | -18°C ... -24°C | Freezer compartment | up to 12 months |
Please note that the temperature on different shelves of the same chamber may differ by 2-3 degrees. Warm air rises, so the upper shelves are always warmer. That is why it is better to place milk and eggs in the middle or bottom, and ready-made dishes that do not require strong cooling - higher.
If your model Biryusa has a zone Fresh Zone (zero chamber), its temperature is automatically maintained close to 0°C. It is usually not necessary to adjust the main thermostat to change the temperature in this zone; it depends on the overall cooling power.
Seasonal adjustment of settings
The external ambient temperature significantly affects the operation of the refrigeration unit. In the summer, when the kitchen is hot, heat exchange is difficult and the compressor takes longer to reach the set parameters. In winter, the situation is the opposite.
In summer, it is recommended to shift the mechanical thermostat regulator by 1 division towards stronger cooling (closer to Max). This will compensate for the high temperature in the room and prevent frequent long periods of compressor downtime, which can lead to defrosting.
In winter, if the refrigerator is in an unheated room or next to a window, the cooling power can be reduced (shifted to Min). However, here lies an important nuance for single-compressor models:
⚠️ Attention: In single-compressor refrigerators, reducing the cold in the upper chamber (turn to Min) automatically reduces the cold in the lower freezer. In winter, this can lead to thawing of food in the freezer compartment.
The ideal solution for the winter period in cool rooms is to use a special winter kit (heating the thermostat zone), if the model is not initially designed to operate at low ambient temperatures (below +10°C).
Diagnostics of temperature problems
Sometimes users turn the regulator, but the temperature does not change. This may indicate a malfunction. The first sign of a thermostat breakdown is the absence of a click when turning the knob to turn off or the characteristic sound of the compressor turning on.
If the refrigerator Biryusa "does not keep cold", check the following points:
- 🧊 Ice on the evaporator - a thick layer of ice acts as a heat insulator, interfering with cooling. Complete defrosting is required.
- 🚪 Loose fit of the door —check the sealing rubber. If it is dirty or damaged, the cold goes away.
- 🌡️ Sensor malfunction —in electronic models, failure of the sensor readings leads to incorrect operation of the entire system.
It is also worth checking whether the ventilation vents are blocked holes inside the chamber. Air circulation in models with No Frost or Low Frost is critically important. If you cover the air ducts with pans, the cold will not reach the food, and the thermostat will “think” that it is already cold in the chamber, turning off the compressor prematurely.
Frequently asked questions and answers (FAQ)
Why does ice freeze in the Biryusa refrigerator, even if the minimum temperature is set?
Most often this is not due to the thermostat settings, but to a broken door seal or frequent opening. It is also possible that the drainage hole becomes clogged, causing condensation to freeze rather than drain away. Check the integrity of the seal and clean the drain.
Which position of the regulator saves the most energy?
The most energy efficient is the middle position (numbers 3-4 on the mechanics). Setting it to "Max" forces the compressor to work almost non-stop, which sharply increases electricity consumption, and setting it to "Min" can lead to spoilage of food and repeated switching on for a long cycle.
Is it possible to change the temperature in a running refrigerator?
Yes, you can change the settings at any time. However, you should not do this too often. Give the unit 3-4 hours to stabilize the mode after each change to evaluate the real result.
What to do if the thermostat knob rotates freely?
If the knob rotates without resistance and does not lock in position, most likely the thermostat mechanism itself is broken or the rod has come off. In this case, adjustment is impossible; replacement of the part is required.