The situation when Biryusa refrigerator does not turn off, but continues to buzz around the clock, is one of the most common problems faced by the owners of this equipment. Constant operation of the compressor leads to significant waste of electricity, increased wear of parts and, ultimately, can cause complete failure of the unit. It is important to understand that a continuous hum is not just a background noise, but a signal that the cooling system cannot reach the set temperature values.
The reasons for this behavior can vary from trivial operating errors to complex technical malfunctions of internal components. In some cases refrigeration equipment the chamber simply does not have time to cool due to the open door, in others, serious repairs are required with the replacement of the refrigerant or compressor. Ignoring a problem in the early stages often leads to costly recovery, so diagnostics are necessary immediately after detecting an anomaly.
In this article we will look in detail at why Biryusa refrigerator works without interruptions, how to independently check the serviceability of the main components and in which cases calling a technician becomes inevitable. You will learn what sounds and indicators you should pay attention to first.
Primary diagnostics and leak testing
Before you panic and look for the service center number, you need to exclude external factors that affect the operation of the equipment. It often happens that the unit is working properly, but its operating conditions do not allow it to enter standby mode. First of all, check the tight fit of the door to the body. If the rubber seal is worn out, dirty or deformed, warm air constantly flows into the chamber.
The thermostat reads the increased temperature and commands the compressor to work continuously. To check the tightness, use a regular sheet of paper: clamp it between the door and the body around the perimeter. If the sheet is pulled out without resistance, it means sealing rubber requires replacement or cleaning. Also pay attention to the hinges: if the door is skewed, the tightness is broken even with a new seal.
Another important aspect is the room temperature. If Biryusa refrigerator is installed near a battery, stove or in direct sun, it will work at its maximum capacity. In this case, heat exchange is disrupted and the system cannot effectively remove heat from the condenser. Make sure that there is a gap of at least 5-7 cm between the back wall of the unit and the wall of the room for normal air circulation.
Malfunctions of the thermostat and temperature sensors
One of the main reasons why Biryusa refrigerator does not turn off is the exit from building a thermostat (thermostat). This small device is responsible for turning the compressor on and off depending on the temperature inside the chambers. If the contacts inside the thermostat “stick” in the closed position or the sensor transmits incorrect data to the control module, the compressor will work indefinitely.
In models with electronic control, defrost sensors and cooling are responsible for temperature control. If they break down, the electronic unit “thinks” that the chamber is warm and does not give the command to stop the engine. Diagnosis of these elements requires the use of a multimeter to test the continuity of the circuit. In mechanical models, you can check the thermostat by temporarily closing its contacts: if the refrigerator starts working, then the problem is in the regulator.
Symptoms of a faulty thermostat
If when you turn the regulator knob to minimum (maximum cold), a characteristic click does not occur, but the compressor continues humming - most likely the thermostat is faulty.
Replacing the thermostat is a procedure that can be done with your own hands if you have basic skills in working with the tool. However, it is important to choose an analogue with identical parameters, since different models Biryusa may have different capillary tube lengths and response temperature ranges. An error in choosing a part will lead to incorrect operation of the refrigerator in the future.
Refrigerant problems: freon leak
If you notice that the Biryusa refrigerator hums constantly, but there is no cold inside or it is very weak, there is a high probability of a refrigerant leak. Freon circulates in a closed circuit, and in good condition its quantity does not change for years. However, microcracks in the evaporator, corrosion damage or factory soldering defects can lead to depressurization of the system.
When the freon level is low, the compressor tries to compensate for the lack of refrigerant by working longer, but cannot reach the desired temperature. This condition is extremely dangerous for the engine: it runs idle, overheats and can burn out. It is difficult to determine a leak visually, but there are indirect signs: swelling of the housing wall, the appearance of oily spots near the compressor, or a characteristic whistle during operation.
Restoring the freon level requires professional equipment: a vacuum pump, a pressure gauge station and scales for accurate dosage of gas. It is impossible and dangerous to refill the system yourself. In addition, before refueling, it is imperative to find and eliminate the location of the leak, otherwise the problem will recur in a short time.
⚠️ Attention: Attempting to independently solder pipelines without skills and special equipment often leads to complete failure compressor failure or fire hazard.
Clogged capillary tube
Another technical malfunction leading to continuous operation of the unit is clogged capillary tube. This thin element serves as a throttle, creating the necessary pressure in the system. Over time, oil oxidation products, moisture or small debris may accumulate in the tube, blocking the freon flow.
When clogged, the pressure in the system is disrupted: at the outlet of the compressor it increases, and in the evaporator it drops. As a result, refrigeration circuit does not work effectively. The compressor hums, the condenser may only be partially hot, but the temperature inside the chambers remains high. Often, when there is a blockage, you can hear gurgling sounds or a periodic change in the tone of the engine hum.
Removing the blockage at home is almost impossible. Craftsmen use the method of pushing nitrogen under high pressure or replacing the capillary tube with a new one. The procedure requires opening the system, which automatically implies subsequent evacuation and refilling with freon. This is a complex and time-consuming process that requires qualifications.
☑️ Symptoms of a clogged capillary tube
Malfunction of the control module
In modern models Biryusa with the No Frost system or electronic control, the electronic module is responsible for all processes. If the relays burn out on the board, the tracks are broken, or there is a failure in the firmware, the control signal to turn off the compressor may simply not be received. In this case, the engine will work until it burns out or is de-energized.
Module diagnostics require special knowledge in electronics. Visually, you can notice blackening of the elements, swelling of the capacitors or a burning smell. However, the board often looks completely intact from the outside. It is better to entrust checking the power supply and control circuits of the compressor to a specialist, since an error can be expensive.
Sometimes the problem is solved by simply flashing or resetting errors, but in most cases, repair or replacement of the control board is required. This is one of the most expensive parts refrigeration equipment, so before replacing it is important to make sure that it is faulty, ruling out other causes.
Wear of the compressor and motor
The saddest scenario is the wear of the compressor itself. If Biryusa refrigerator has been serving you for more than 10-12 years, the resource of its main node may be coming to an end. The piston group wears out, the valves lose their tightness, and the compressor stops creating the necessary pressure for the circulation of freon.
In this state, it can work constantly, trying to “catch up” with the temperature, but in fact its efficiency is close to zero. A characteristic sign of a dying compressor is a very hot housing (you cannot touch it with your hand) and a specific metallic knocking or clanging sound during operation. Also, the engine may try to start, click and turn off through the thermal protection relay.
Replacing a compressor is a major overhaul, which is often comparable in cost to buying a new refrigerator. Before agreeing to such a procedure, it is worth weighing the economic feasibility. Sometimes it is easier to purchase new equipment than to revive an old unit.
Compressor service life
The average service life of a modern compressor is 10-15 years. After this period, the risk of breakdown increases significantly, even if the equipment looks good on the outside.
Comparative table of symptoms and causes
For ease of diagnosis, we have prepared a table that will help compare the observed symptoms with the probable causes of the malfunction. This will allow you to quickly navigate the situation before calling a technician.
| Symptom | Probable cause | Difficulty of repair | Need for a technician |
|---|---|---|---|
| Compressor hums, no cold | Freon leak or blockage | High | Mandatory |
| Works without stopping, but freezes | Faulty thermostat | Low | Desirable |
| Humming, warm inside, condensation | Door leaky | Low | No |
| Strong heating of the case, knocking | Wear of the compressor | High | Required |
| No response to buttons, constant operation | Control module failure | Average | Required |
Frequently asked questions and answers (FAQ)
Can the Biryusa refrigerator work constantly in hot weather?
Yes, in the summer, when the room temperature exceeds 30 degrees, the compressor operating time increases. However, it should still turn off periodically. If there are no pauses at all, this is a malfunction.
How long should the compressor normally work?
The normal mode is considered to be one in which the compressor works about 30-40% of the total time (about 15 minutes it works, 25-30 rests). In hot weather or when the chambers are fully loaded, the operating time can increase to 50-60%.
Is it dangerous to leave a running refrigerator unattended?
Yes, it is a fire hazard. Constant operation leads to overheating of the wiring and the compressor itself. If you are leaving for a long time, it is better to turn off the power to the faulty appliance.
Why does the refrigerator not turn off after defrosting?
Perhaps you turned it on too early, before it was completely dry, or you violated the temperature regime. The thermostat setting may also have gone wrong. Let the equipment work for several hours; if the cycle does not return to normal, look for the cause in the sensors.
⚠️ Attention: If you smell burning plastic or see sparking in the compressor area, immediately unplug the refrigerator and call a specialist. Operation in this condition is prohibited.
To summarize, we can say that constant operation Biryusa refrigerator is a serious signal that requires your attention. Start diagnostics with simple steps: checking the seal and temperature conditions. If simple measures do not help, do not delay calling a professional to preserve your equipment and products.