The situation when a refrigerator Biryusa begins to make unusually loud sounds is familiar to many owners of this equipment. The Russian brand is famous for its reliability and simplicity of design, however, even the most proven units may require attention over time. Extraneous noise is not just annoying, it often signals malfunctions compressor or violation of operating rules.
Before you panic and call a technician, you need to carry out initial diagnostics yourself. Often the reason lies in banal vibration of the case or improper installation, and not in the breakdown of expensive components. In this article, we will look in detail at why your Biryusa hums, knocks or gurgles, and what steps you need to take for silence in the house.
Understanding the nature of sound is already half the solution to the problem. The hum can be smooth and monotonous, or it can be interrupted by sharp knocks or metallic clanging. Identification of the type of noise will help you accurately determine the source of the malfunction and avoid unnecessary expenses on repairs.
Natural sounds of the compressor and refrigerant
A new refrigerator or unit always makes sounds after defrosting, which can alert an inexperienced user. It is considered normal even humming, which either increases or subsides. This indicates the normal operation of the motor-compressor, which circulates freon through the pipe system.
Particular attention should be paid to the sounds that occur immediately after the compressor is turned off. At this moment, the pressure inside the system equalizes, and you can hear a characteristic “gurgling” or “transfusion” of the liquid. This is how it behaves refrigerantflowing from the condenser to the evaporator. This process is absolutely normal for models with a drip defrosting system.
⚠️ Attention: If the humming is accompanied by strong vibration, which can be felt by touching the body, this may indicate that the refrigerator is not level. Even a slight misalignment enhances the resonance.
It is also worth considering that modern models operating on the principle No Frostmake the sounds of a running fan. This is a quiet, monotonous whistle or air noise. If the fan begins to crackle or hum like an airplane turbine, it means that an ice crust has formed on its blades or the bearing has failed.
It is important to distinguish between operating noise and alarm signals. If the refrigerator Biryusa operates silently, and then a loud click is heard and the unit goes silent, this is a sign that the protective relay has tripped. In this case, the equipment tries to start, but cannot, which requires the intervention of a specialist.
Installation problems and vibration of the case
One of the most common reasons why a refrigerator Biryusa makes noise is its incorrect location. Vibration from a running compressor is transmitted to the floor and walls, creating a resonance effect. If the unit is too close to furniture or a wall, the hum increases many times over.
To eliminate this problem, you need to check the horizontal installation. Use a building level or just rock the refrigerator. If it wobbles, you need to tighten the adjustment support legs. Usually they are located in the front part at the bottom and are twisted clockwise to raise the angle.
☑️ Diagnosis of refrigerator installation
Another source of noise is touching the internal elements. Tubes condenserlocated at the rear should not come into contact with each other or with the cabinet wall. They may vibrate and rattle during operation. Gently bend them with your hand (only when the refrigerator is turned off and cooled down!) to ensure a gap.
Sometimes objects standing on or inside the refrigerator make rattling sounds. Bottles, jars or dishes may resonate with the frequency of the motor. Remove all excess from the top cover and check the shelves inside - if they are not tight, they can also shake.
Mechanical faults: shock absorbers and fastenings
If the installation is perfect, but Biryusa continues to hum loudly, the problem may lie in the mechanical components of the unit itself. The compressor is attached to the refrigerator frame using special shock absorbers. Over time, the rubber gaskets tanned or crack, and metal begins to beat against metal.
In this case, the hum becomes metallic, with a characteristic clanging sound when starting and stopping the engine. Repair in this case consists of replacing rubber washers or springs. This is an inexpensive procedure that you can do yourself if you have the skills to work with tools.
| Sound type | Probable cause | Difficulty of repair |
|---|---|---|
| Metal clanging | Wear compressor shock absorbers | Low |
| Loud humming | Improper installation or contact of pipes | Minimum |
| Fan crack | Ice or motor breakdown | Average |
| Strong vibration of the floor | No gap at the wall | Minimum |
Also worth inspect the compressor casing. Sometimes it is simply poorly secured or deformed. The vibration is transmitted to the thin metal of the casing, and it begins to rattle like a drum. Try to lightly press the casing with your hand while the refrigerator is operating - if the sound changes or disappears, then you need to place a piece of rubber or bend the fasteners.
Can shock absorbers be lubricated with oil?
It is absolutely forbidden to use oil to lubricate rubber shock absorbers. Oil destroys the rubber structure, it becomes loose and quickly fails. If the rubber is dry, you just need to change it.
Fan noise in No Frost systems
In models Biryusa with a system No Frost or “Crying wall” with additional airflow, the fan is responsible for circulating cold air. This is the only moving element inside the freezer or refrigerator. If you hear a whistling, grinding or crackling sound coming from inside, the problem is most likely there.
A common cause is ice freezing on the blades. This happens if the door seal is broken or the defrost heating element is faulty. Ice interferes with rotation and the fan begins to make noise. In this case, the refrigerator must be completely defrosted (for at least 24 hours with the doors open).
If defrosting does not help, it means that the fan motor bearing or its bushing has failed. In this case, you will need replacing the unit. This is not a complicated operation: you need to remove the back panel in the freezer, disconnect the terminals and install a new fan.
Sometimes a foreign object (a piece of ice, a crumb) gets into the rotation zone. Carefully inspect the fan's working area. Even a small piece of ice can create an annoying noise, which will intensify as the ice grows.
Wear of the compressor and start relay
The most unpleasant option is wear of the very heart of the refrigerator, compressor. If the unit is many years old, its internal mechanisms may have worn out their service life. The pistons begin to knock, the valves let gas through, which is accompanied by a loud, uneven hum.
Another symptom is a problem with the start relay. If a loud click is heard when turning on, then an attempt to start (humming) follows, and again there is a click followed by turning off - the relay cannot start the motor. This often happens after power surges in the network.
⚠️ Attention: Operating a refrigerator with a faulty start relay is dangerous. The motor tries to start, consumes a huge current and can burn out completely, which will lead to expensive repairs.
Only a technician with a pressure gauge can diagnose a compressor malfunction. However, if you hear the motor humming strainedly, trying to start, or running intermittently, get ready to replace the unit. In some cases, installing a more powerful or modern compressor helps, but this requires re-soldering the system.
When you need to call a technician
Not all problems can be solved on your own. If you have checked the installation, defrosted it, tightened the legs, but Biryusa continues to make noise, it is better not to risk it. Especially if the noise is accompanied by a lack of cold or the formation of a “fur coat” in the chamber.
A call to a specialist is necessary if:
- 🛑 The compressor hums, but does not start, and a click is heard.
- 🛑 There is a smell of burning or burning plastic.
- 🛑 The refrigerator has stopped freezing or is freezing too weakly.
- 🛑 Damage to the tubes or traces of oil under the unit are visually visible.
A professional technician will carry out a full diagnostics of the electrical circuit and freon circulation system. He will determine whether it is worth repairing the old unit or whether it is cheaper to purchase a new one. Remember that independent intervention in refrigerant circuit without a license and equipment is prohibited and dangerous.
Timely repairs are often cheaper than replacing a burnt-out compressor or buying a new refrigerator. Do not ignore the first signs of problems, even if they seem to you just an “unpleasant noise.”
Why did the old Biryusa refrigerator begin to hum more strongly?
Over time, the lubricant in the compressor thickens, and the shock absorbers lose their elasticity. This leads to increased vibration and noise. The condenser at the back could also be dirty, causing the motor to overload.
Is it normal for the refrigerator to gurgle after it is turned off?
Yes, this is absolutely normal. The sound of flowing liquid (freon) is heard due to the difference in pressure in the system, which equalizes after the compressor stops.
Is it possible to lubricate a humming compressor?
No, modern compressors are sealed and do not require lubrication during operation. An attempt to drill a hole or add oil will lead to depressurization and breakage.
How often should Biryusa be defrosted to eliminate noise?
Models with manual defrosting require defrosting when a layer of ice of 5-7 mm forms. No Frost models thaw themselves, but once every year and a half it is recommended to defrost them completely for prevention.