Why the Biryusa refrigerator constantly works and does not turn off: reasons and solution

The situation when the refrigerator Biryusa works without interruptions is a serious signal of a malfunction of the cooling system. In normal operation, the compressor should turn on and off cyclically, maintaining the set temperature inside the chambers. If the motor hums continuously, and the indicators or the absence of a shutdown click indicate constant operation, this leads to critical overheating of the unit components.

Ignoring the problem entails a sharp increase in electricity bills and, more importantly, creates a fire hazard. Long-term wear and tear can damage an expensive compressor, the replacement of which is often not economically feasible compared to the cost of a new household appliance. Therefore, it is important to quickly identify the source of the failure.

In this article we will analyze in detail the main reasons why Biryusa refrigerator does not turn offand consider diagnostic methods available at home. You will learn to distinguish software failures from serious mechanical breakdowns and understand when you can handle it yourself and when you need to call a technician.

Natural causes of continuous operation

Before you panic and look for breakdowns in the electrical circuit, you should exclude external factors. Often, users themselves create conditions under which refrigerator they are forced to work in intense mode. For example, if you have just loaded a large amount of food at room temperature, the unit will work until it cools the entire volume to the specified parameters.

It is also worth checking the temperature in the room. If the refrigerator Biryusa is installed near the stove, radiator or in direct sunlight, the thermoregulation system will constantly receive signals about the lack of cold. Heat inflows from the outside do not allow the internal sensor to record the achievement of the target temperature.

⚠️ Attention: Installing the refrigerator close to the wall disrupts the air circulation around the condenser. Leave a gap of at least 10 cm for effective heat transfer.

Another banal but common reason is a door that is not tightly closed. Even a microscopic gap allows warm air to constantly penetrate inside, causing the compressor to work non-stop. Check if anything is preventing the seal from sealing tightly - crumbs, dishes or deformation of the rubber itself.

If you set the temperature in the settings too low, for example, the “Super Freeze” mode or the minimum values on the mechanical regulator, the unit will strive to achieve an ideal that is unattainable under current conditions. In the summer, when the ambient temperature is high, this is especially critical for older models.

Malfunctions of the thermostat and sensors

One ​​of the most common technical reasons why the refrigerator does not turn offis the failure of the thermostat. This component is responsible for closing and opening the compressor power circuit depending on the temperature in the chamber. If the contacts inside the thermostat “stick” in the closed position, the motor will receive current constantly.

In modern models Biryusa with electronic control, the function of the thermostat is performed by an air temperature sensor. If it transmits incorrect data to the control module (for example, it shows +10°C when it is already -5°C inside), the system will continue to cool. Diagnosis of such elements requires a multimeter and resistance testing.

Replacing the thermostat is a procedure available with basic skills in working with tools. However, it is important to choose an analogue with identical parameters, since the temperature range for turning on and off may differ for different models. An incorrectly selected sensor will lead to either frequent cycles or constant operation.

Problems with sealing and thermal insulation

The rubber seal around the perimeter of the door is the first barrier to warm air. Over time, rubber loses elasticity, cracks or deforms. Warm air, saturated with moisture, rushes into the resulting cracks, which provokes continuous operation of the compressor to compensate for heat inflows.

You can check the tightness with a simple test with a sheet of paper. Clamp the sheet between the door and the body in different places around the perimeter. If the paper falls out or is pulled out without noticeable resistance, it means that in this place seal it does not fit tightly enough. This requires immediate intervention.

Sometimes the problem lies not in the rubber itself, but in skewed door hinges. If the door is warped, even a new seal will not be able to ensure a tight seal. In such cases, it is necessary to adjust the hinges or replace them if the old ones are worn out and have play.

⚠️ Attention: A dirty and sticky seal adheres worse to the body. Regularly wipe the rubber parts with a soft, damp cloth, avoiding the use of aggressive chemicals.

In rare cases, the integrity of the thermal insulation layer of the case is compromised, for example, due to mechanical shock or corrosion. If moisture gets inside the walls of the refrigerator, the thermal conductivity of the walls increases sharply, and the unit cannot retain the cold, working non-stop.

Refrigerant leakage and system blockage

If Biryusa refrigerator it hums, but does not cool or cools very weakly, while working constantly, these are classic signs of a freon leak. The compressor tries to build up pressure and temperature, but due to insufficient refrigerant, the refrigeration cycle does not complete. The temperature sensor simply does not register a decrease in degrees.

Another option is a clogged capillary tube. Oil breakdown products or moisture entering the system can clog the narrow channel. In this case, the pressure is built up, but the circulation of the refrigerant is disrupted. The motor wears out, trying to push freon through the blockage.

It is difficult to visually diagnose a leak or blockage. Often a problem is indicated by swelling of the evaporator inside the chamber or, conversely, a complete absence of frost on the back wall when the compressor is running. Overheating of the motor-compressor itself may also occur.

Restoring the tightness of the system and charging with refrigerant is a complex technological process. It includes finding the location of the leak (often using nitrogen pressure testing), soldering copper tubes, evacuating the system and filling with a precisely measured amount of freon of a certain brand.

Failure of the motor-compressor

The most expensive and serious problem is the failure of the compressor itself. compressor. If the motor windings are damaged or the mechanical part is worn out, the efficiency of the unit decreases. It may operate, create noise and vibration, but not develop sufficient pressure for a normal cooling cycle.

In some cases, the starting protection mechanism is faulty. If the starting relay “sticks” or does not open the starting winding circuit after starting, the compressor continues to operate in abnormal mode. This is often accompanied by a humming sound and the absence of a characteristic click when stopping.

Diagnostics of the compressor requires a professional approach. It is necessary to measure the resistance of the windings, check the current consumption and compare it with the passport data. If the current is significantly higher than normal, and the temperature of the motor housing reaches critical values, an interturn short circuit is likely.

Replacing a compressor is a labor-intensive operation that requires overhauling the entire refrigeration system. Often the cost of such work, together with a new part, is a significant part of the price of a new refrigerator, so the feasibility of repairs must be assessed individually.

Diagnostics and actions in case of breakdown

If you encounter a problem with continuous operation, do not rush to disassemble the unit. Start with an external inspection and simple actions. Make sure that the plug fits tightly in the socket, check the temperature settings and make sure that nothing is preventing the door from closing.

Try to defrost the refrigerator completely, leaving it turned off with the doors open for 10-12 hours. Sometimes moisture frozen in hard-to-reach places in the system or in the condensate drainage channel causes sensors to malfunction. After defrosting, turn on the unit and observe its cycling.

⚠️ Attention: Do not use a hair dryer or other heating devices to speed up defrosting - a sudden temperature change can damage the plastic housing of the evaporator.

If simple methods do not help, you must proceed to instrumental diagnostics. You will need a multimeter to test the thermostat circuit and visually inspect the electrical contacts for carbon deposits or oxidation. It is also worth paying attention to the color of the smoke from the compressor pipe (if visible) - black smoke indicates oil combustion.

Prevention and operating rules

In order to Biryusa refrigerator serve for a long time and not cause problems with continuous operation, it is important to follow the operating rules. Regularly, at least once every six months, clean the condenser (grid at the back or bottom) of dust and animal hair. A heat exchanger clogged with dust does not give off heat well, causing the compressor to work longer.

Do not load hot foods into the chamber. This creates excess load on the system and leads to the formation of excess moisture and ice. Allow food to cool to room temperature before storing.

Monitor the condition of the seal. Periodically lubricate it with special silicone grease or glycerin to maintain the elasticity of the rubber. This will prevent the appearance of microcracks and loss of tightness.

Following these simple recommendations will extend the life of the main components of the unit and avoid situations where The refrigerator does not turn off. Remember that timely maintenance is cheaper than major repairs or buying new equipment.