Violation of the temperature regime in the refrigerator is always stressful, because food supplies are at risk. Equipment owners Biryusa often encounter situations where the camera freezes too weakly or, conversely, turns vegetables into ice blocks. Understanding the principles of operation thermostat will allow you to quickly return the equipment to working condition without calling a technician.
The first thing that needs to be done is to carry out basic diagnostics. Often the problem lies not in a breakdown, but in incorrect operation or incorrect settings. In this article we will analyze in detail how to correctly to regulate the cold in various models of Biryusa refrigerators, and consider typical user mistakes.
Stable temperature inside the chambers depends on many factors: from the tightness of the seal to the position of the power regulator. Thermostat — this is the main unit responsible for maintaining the microclimate, and its correct operation is critical for the safety of products.
Principle of operation of the Biryusa cooling system
Refrigerators Biryusa, like most classic models, operate on the compression principle cycle. The compressor compresses the refrigerant, which then circulates through the condenser and evaporator tubes, removing heat from the internal volume of the chamber. This process is controlled by thermostat (thermostat), which opens the electrical circuit when the set temperature is reached.
It is important to understand that the adjustment is made not in “degrees”, but in conventional units of power on the regulator scale. The higher the value, the more intense the compressor works. In models with No Frost the system is more complicated: a defrost sensor and a timer are involved, but the basic principle of temperature control remains similar.
How does a thermostat work?
A thermostat is a sealed capsule with gas or liquid, sensitive to temperature changes. When heated, the pressure inside the capsule increases, closing the contacts and turning on the compressor. When cooling, the pressure drops and the circuit opens.
Incorrect adjustment can cause the compressor to work without stopping or, conversely, to turn on too rarely. This directly affects the service life of the unit and the quality of freezing.
Location of the temperature regulator
The installation location of the regulator depends on the specific model of your refrigerator Biryusa. In older and budget series, the mechanical handle is usually located inside the refrigerator compartment, often in the upper right corner or on the side wall. In more modern models, the control panel can be placed on the outer door.
The mechanical regulator is a dial with numbers from 0 to 7 (or up to Max). Zero position means the compressor is completely turned off. The numbers do not indicate degrees Celsius, but indicate cooling intensity. Turning the knob clockwise increases the power of the system.
In models with electronic control, the setting is carried out through the display and touch buttons. Here you can see the exact digital temperature readings. However, even in such systems, calibration is sometimes required if the sensor starts to “lie.”
- 🔍 Internal mechanical handle - typical for classic Biryusa 133, 134 models.
- 🖥️ Electronic display on the door - found in series with function No Frost and inverter compressors.
- ⚙️ Hidden screw - in some models the main regulator is hidden under a plastic plug inside the chamber.
Step-by-step instructions for adjustment
The process of setting the temperature requires a sequential approach. Don't turn the knob randomly, expecting instant results. The refrigerator takes time (from 2 to 6 hours) to stabilize the temperature after each change of settings.
First, make sure that the refrigerator is at least 50% loaded with food. It is more difficult to cool an empty chamber, and the thermostat may not work correctly. If you have just defrosted the equipment or loaded a lot of warm products, let it work in normal mode for several hours before adjusting.
☑️ Temperature adjustment algorithm
The optimal starting value for a mechanical regulator is position “3” or “4”. If the food in the refrigerator compartment freezes, turn the knob counterclockwise (reduce the value). If the cold is not enough - clockwise. Remember that a sudden change of mode is harmful to the compressor.
⚠️ Attention: Do not set the regulator to the maximum value (7 or Max) on a permanent basis. This forces the compressor to work without interruption, which can lead to overheating, freezing of the evaporator and increased energy consumption.
Table of recommended settings
The correct choice of the regulator position depends on the external conditions and the load of the refrigerator. Below is a table that will help you navigate the settings for different situations.
| Situation | Knob position | Expected temperature | Note |
|---|---|---|---|
| Standard mode | 3 - 4 | +3...+5°C | Optimal for everyday use |
| Large load | 4 - 5 | +2...+4°C | When loading a large amount of warm products |
| Hot summer | 4 - 5 | +3...+5°C | Compensation for high room temperatures |
| Minimum load | 2 - 3 | +5...+7°C | Economy mode for small quantities of products |
| Super Freeze mode | Max / 7 | Below -18°C | Only for 2-3 hours, not constantly! |
Use this table as a basic guide. Actual indicators may differ depending on the technical condition of your Biryusa and the quality of the sealing rubber.
Typical problems and their solutions
Sometimes even correct adjustment does not give the desired result. In such cases, the problem may lie in technical malfunctions or violations of operating rules. Let's consider the most common scenarios.
If the refrigerator does not freeze even at maximum settings, check the integrity of the door seal. If the rubber does not fit tightly, cold air escapes and the compressor cannot reach the desired temperature. Also, the cause may be a freon leak or a malfunction of the thermostat itself.
The opposite situation is ice freezing on the back wall or products. This often happens if the regulator is turned to maximum and there is not enough food in the chamber. Also, the cause may be a clogged drainage hole, due to which the moisture does not leave, but freezes.
- ❄️ An increase in “fur coat” on the evaporator is a sign of problems with the defrost system or the door is not tightly closed.
- 🔊 Humming and frequent starts - the compressor may be overheating due to high load or poor ventilation in the back.
- 💧 Puddles under the refrigerator - check the drainage hole, it could be clogged with crumbs or ice.
⚠️ Attention: If you hear clicking sounds, but the compressor does not start, or it only turns on for a couple of seconds and turns off, do not try to solve the problem by adjusting the thermostat. These are signs of a malfunction of the starting relay or the compressor itself; repair is required.
The influence of external factors on temperature
The temperature in the room where the refrigerator is installed Biryusadirectly affects the efficiency of its operation. If the room is hot (above +25°C), it is more difficult for the refrigerator to transfer heat through the condenser. In such conditions, a slight increase in cooling power may be required.
It is important to ensure proper ventilation. The rear radiator grille should be at least 10 cm from the wall. If the refrigerator is built into a niche or stands close to furniture, the heat will not dissipate, which will lead to overheating and ineffective operation of the cooling system. Direct sunlight hitting the body also heats the internal chambers. Try not to install equipment near a radiator or stove. In winter, if the refrigerator is placed on an unheated veranda, the oil in the compressor may thicken, making it difficult to start. cooling systems.
Direct sunlight hitting the body also heats up the internal chambers. Try not to install equipment near a radiator or stove. In winter, if the refrigerator is placed on an unheated veranda, the oil in the compressor may thicken, making it difficult to start.
Features of models with No Frost
In refrigerators Biryusa with a system No Frost the adjustment process has its own nuances. Here, cold air is distributed by fans, and the temperature at different points in the chamber may vary less than in drip models. However, the principle of setting the thermostat remains the same.
The main difference is the presence of an automatic defrosting system. If you notice that there is less cold in the freezer, do not rush to turn the regulator. The air ducts may be clogged or the fan may be faulty. In such models, it is important not to block the air circulation holes with food.
Electronic control modules in such refrigerators may have an error reset function. If after defrosting and rebooting (unplugging for 15 minutes) the problem with the temperature persists, you should contact a service center to diagnose the sensors.
Why do vegetables freeze at the back wall in the Biryusa refrigerator?
This happens if the thermostat is set to too low a temperature or if the food touches the back wall where the evaporator is located. Move the food away from the wall and reduce the cooling power.
Is it possible to adjust the cold when the refrigerator is turned off?
You can change the position of the knob when it is turned off, but the result can only be assessed after turning on and operating the unit for several hours.
How often should you check the temperature settings?
It is enough to check the temperature once a season (summer and winter), since changing the temperature in the room requires adjusting the operating mode of the refrigerator.
What to do if the regulator knob scrolls endlessly?
This is a sign of a breakdown of the thermostat itself. In this case, it does not open the circuit, and the refrigerator will freeze constantly until the compressor breaks down. A part needs to be replaced.
Does the amount of food affect the cold setting?
Yes, a full refrigerator holds the cold better, but it takes longer for the initial cooling. An empty refrigerator reacts faster to changes, but is less stable when the door is opened.