The situation when Biryusa refrigerator stops turning off and works without interruption is one of the most common complaints from owners of this equipment. The constant hum of the compressor is not only annoying to the ear, but also indicates a serious malfunction of the cooling system. Ignoring this problem can lead to failure of the motor-compressor, which will require expensive repairs or a complete replacement of the unit.
The reasons for this behavior can be either trivial, associated with improper operation, or technically complex, requiring the intervention of a specialist. In some cases, the unit simply tries to compensate for the loss of cold due to a loosely closed door, while in others, a refrigerant leak occurs or the piston group jams. It is important not to panic, but to consistently analyze the situation.
In this article we will analyze in detail all possible factors affecting continuous operation Biryusa refrigerator, from simple user errors to complex electronic breakdowns. You will learn how to carry out initial diagnostics and in which cases independent repair is impossible. If the compressor operates for more than 12-14 hours in a row without stopping, this is already considered an emergency operation requiring immediate intervention.
Violation of operating rules and external factors
Before sounding the alarm and looking for a breakdown, it is necessary to eliminate the human factor. Often the reason lies in a banal violation of the thermal balance inside the chamber. If you have just loaded a refrigerator large amount of warm products, for example, after cooking or shopping, the unit will work hard, trying to cool the entire volume to the set temperature. This is a normal reaction of the system.
It is also worth checking the tightness of the door. Rubber seal over time wears out, cracks or becomes dirty, which is why warm air constantly enters the chamber. The compressor simply does not have time to turn off, since the temperature sensor does not record the achievement of the required values. Check to see if anything is preventing the door from closing, and inspect the rubber around the perimeter.
The location of the equipment also plays an important role. If Biryusa refrigerator stands close to the wall or next to heating devices, heat exchange is disrupted. The radiator on the rear wall cannot effectively transfer heat to the environment, which forces the cooling system to work harder. There should be a distance of at least 5-7 centimeters between the back of the appliance and the wall.
⚠️ Attention: Never try to forcibly turn off the refrigerator by unplugging the plug from the socket during operation, unless it is an emergency. An abrupt interruption of the compressor operating cycle under load can damage the starting relay or the motor itself.
Faults of the thermostat and sensors
One of the main reasons for continuous operation is failure of thermostat (thermostat). This unit is responsible for sending a signal to turn off the compressor when a certain temperature is reached. If the contacts inside the thermostat “stick” in the closed position or the sensing tube breaks, the stop signal is simply not sent to the motor.
Modern electronically controlled models use temperature sensors air dampers instead of a mechanical thermostat. If the sensor “lies” and shows that the chamber is too warm, the control board will keep the compressor on. Diagnostics of such systems requires a multimeter and electrical knowledge.
Symptoms of thermostat failure are often accompanied by either a complete absence of cold, or, conversely, severe freezing of food, since the cooling cycle is not interrupted. Replacing the thermostat is a procedure accessible to a home craftsman, but requires care when installing a new sensitive tube.
☑️ Diagnostics of the thermostat
Problems with the door seal
As already mentioned, the tightness of the chamber is a key factor. But if simple adjustment does not help, it means sealing rubber requires replacement or serious restoration. Over time, the rubber hardens, loses elasticity and ceases to fit tightly to the body, forming micro-cracks.
Warm, moist air constantly penetrates through these cracks. This leads not only to continuous operation of the compressor, but also to the formation of ice and “fur coats” on the evaporator. The moisture freezes, thermal conductivity deteriorates, and the refrigerator works even harder, trying to break through the ice shell.
You can check the tightness with a simple test with a sheet of paper. Clamp the sheet with the door around the perimeter: if it is pulled out too easily or with different forces in different places, then the fit is broken. Treatment with glycerin or silicone grease sometimes helps restore the properties of rubber, but in case of severe wear, only replacement will help.
How to replace the seal correctly?
To replace, remove the old seal, clean the groove from dirt and glue residues. Before installation, it is recommended to warm the new seal with a hairdryer or soak it in warm water to make it elastic. You need to install starting from the corners, carefully straightening out the folds.
Freon leakage and system blockage
If Biryusa refrigerator it hums, but there is no cold or very little of it, and the compressor does not turn off, there is a high probability of a refrigerant (freon) leak. The pressure in the system has dropped, and the engine is trying to reach the desired temperature while idling. A leak can occur in places where tubes are soldered, in the evaporator (especially if it was defrosted with a knife) or in the condenser.
Another serious technical problem is clogged capillary tube. Oil and freon circulate in the system, and over time, plugs of paraffin-like substances or oxidation products can form there. The pressure in the system increases, the compressor is overloaded, but the circulation of the refrigerant is disrupted.
It is difficult to diagnose a leak or blockage visually. This is often indicated by a hot condenser (grid at the back) in only one part or its complete cooling, although the motor is hot. Repair in this case requires calling a technician with equipment for vacuuming and filling the system.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| The compressor is hot, there is no cold | Freon leak | High (requires a technician) |
| The refrigerator freezes, but does not turn off | Thermostat is faulty | Medium (you can do it yourself) |
| A gurgling sound is heard, the motor is hot | Clogged capillary system | High (needs a technician) |
| Ice on the back wall, the compressor does not rest | Leaking door | Low (seal replacement) |
⚠️ Attention: Freon used in refrigerators can be flammable or toxic depending on the brand. Independent soldering of pipes and refilling with refrigerant without a license and equipment is dangerous to health and life.
Malfunctions of the compressor and start relay
The “engine” of the system itself - compressor - can also cause a problem. If its service life has expired, compression or interturn short circuit in the windings has decreased, it can operate continuously, but not create sufficient pressure in the system. The engine hums, heats up, but effective cooling does not occur.
Often the culprit of the continuous hum is start relay. This device starts the motor and protects it from overloads. If the relay is “stuck” or its contacts are burnt, it can constantly supply voltage to the windings, preventing the compressor from going into rest mode or starting normally (in the latter case, clicks will be heard).
Replacing the start relay is one of the simplest and cheapest repair procedures. It is usually attached to the side of the compressor and can be removed with a slight movement. However, if the compressor itself burns out, it makes more economic sense to think about buying a new refrigerator, since the cost of a new motor and work to replace it is high.
Failures in the electronic control module
In models Biryusa with the No Frost system and electronic control, the control module (board) is responsible for all processes. If tracks on the board burn out, triacs fail, or a software failure occurs, the refrigerator may “freeze” in constant compressor operation mode.
It is also worth checking the defrost sensor. If it is faulty, the system may not enter evaporator defrost mode. The evaporator becomes overgrown with ice, airflow (air circulation) is blocked, the temperature in the chamber rises, and the board commands the compressor to work without stopping.
Diagnostics of electronics requires special knowledge. Sometimes a complete reset (reboot) helps, but more often than not it requires checking the board elements or completely replacing it. In modern conditions, modules are more often replaced entirely than repaired.
Frequently asked questions and answers (FAQ)
How long should the Biryusa refrigerator work and how long should it rest?
In normal operation, the operating coefficient is approximately 30-40%. This means that for 10-15 minutes of work there should be 20-25 minutes of rest. However, these figures depend on the ambient temperature and the load of the chambers.
Is it possible to use a refrigerator if it does not turn off, but freezes?
For a short time, it is possible, but this will lead to excessive energy consumption and accelerated wear of the compressor. If the problem is not solved within 24 hours, the life of the motor may be exhausted, which will lead to expensive repairs.
Why does the refrigerator not turn off for a long time after defrosting?
After defrosting, it is warm inside the chamber. The unit requires time (from 2 to 6 hours) to cool the entire volume and enter operating mode. At this time, continuous operation of the compressor is absolutely normal.
Where is the thermostat located in the Biryusa refrigerator?
In most models, it is located inside the refrigerator compartment, on the right or left wall, often hidden by a plastic casing next to the light bulb or temperature controller.
What to do if the compressor is very hot to the touch?
If the compressor is so hot that it hurts to touch it, and it does not turn off, immediately unplug the refrigerator. Let it cool for a few hours, then try turning it on again. If the situation repeats, call a specialist.