The situation when you open the refrigerator door Biryusa and feel warmth instead of the expected cold can cause panic in any home cook. Products begin to deteriorate, and thoughts immediately arise in your head about expensive repairs or buying a new unit. However, before sounding the alarm, it is necessary to carry out an initial diagnosis, since often the problem lies in simple settings or temporary system failures.
Units of the Russian brand Biryusa are famous for their reliability, but they are not immune from technical failures. If the device hums, but does not generate cold, or the engine does not start at all, the algorithm of actions will vary. In this article, we will analyze in detail the main reasons for the lack of cold in the chambers and propose specific steps to restore the functionality of the equipment.
It is worth noting that modern models are equipped with complex electronics, while older versions operate on mechanical controls. Understanding the principle of operation your specific device will help to quickly localize the fault. Do not rush to disassemble the case if you are not confident in your abilities, but every owner can perform basic checks.
Primary diagnostics and simple operating errors
Before looking for breakdowns in the “insides” of the unit, it is worth eliminating trivial user errors. It often happens that the refrigerator is working properly, but its operating conditions are violated. For example, if you just defrosted the freezer and immediately loaded it with food, the compressor may not be able to cope with thermal shock. Also check that the doors close tightly.
Pay attention to the position of the temperature regulator. On manually controlled models, the slider may have accidentally moved to the minimum or off position. In electronic models with a display, there may have been a failure in the settings or a power surge that reset the parameters. Make sure that the mode super freezing is not constantly activated unless absolutely necessary.
An important factor is the air circulation inside the chambers. If food is packed too tightly and blocks the vents, the cool air will not be distributed evenly. As a result, it may be warm in one corner of the chamber and icy in the other. Free up space at the back wall.
⚠️ Attention: If you find that the door does not fit tightly, do not try to forcefully slam it. Check the sealing rubber for dirt or damage, since it is through leaky joints that up to 80% of the cold escapes.
Checking the tightness of the door is a simple test that can be done using a sheet of paper. Clamp the sheet between the door and the body around the entire perimeter. If the paper falls out easily or moves without resistance, it means it seal needs to be replaced or cleaned. Also make sure that the refrigerator is level and not piled back, which prevents it from closing itself.
Problems with defrosting and the No Frost system
One of the most common reasons why Biryusa stops freezing, due to the formation of an excessive “coat” of ice on the evaporator. In systems No Frost a special timer and heating element (heating element) are responsible for removing moisture and defrosting the evaporator. If this cycle is disrupted, the ice blocks the fans and the cold stops flowing into the main chamber.
Owners of models with manual defrosting need to remember that the layer of frost on the back wall should not exceed 5-7 millimeters. A thicker layer of ice acts as a thermal insulator, interfering with cooling, and increases the load on the compressor. Regular maintenance extends the life of the equipment.
If you hear that the fan is humming, but no air is blowing, most likely the air ducts are clogged with ice. In this case, complete defrosting of the unit is required. Disconnect the device from the mains, open the doors and leave it for at least 10-12 hours (preferably for a day). Using a hairdryer or hot water to speed up the process is strictly prohibitedas this can damage the plastic and evaporator tubes.
☑️ Correct defrosting of the refrigerator
After defrosting, check to see if water has accumulated in the pan under the compressor. If the water drainage system (drain hole) is clogged with debris or mold, the water may freeze, forming an ice dam. Clean the hole with a soft wire or a special brush. This will ensure free flow of melt water.
Faults of the compressor and start relay
The heart of any refrigerator is the compressor. If you hear a quiet click, a hum lasting a few seconds, and then another click and silence, this is a sign of problems starting the engine. In such cases, it is often the fault start relaythat supplies the impulse to start the engine. This is an inexpensive part that you can replace yourself if you have the skills.
If the compressor runs constantly, without turning off, but there is no cold, the situation may be more serious. This may indicate a loss of compression power or a refrigerant leak. In modern two-compressor models Biryusa the failure of one motor leads to the fact that only one chamber does not freeze (for example, the refrigerator while the freezer is working).
You can check the operation of the compressor by touching the condenser (the grille at the back). If the motor is humming and the grille is cold, it means that the freon has left or the capillary is clogged. If the grate is hot, but the chamber is warm, the defrost system or fan may not be working. Prolonged operation of the motor without switching off leads to its overheating and eventual combustion.
⚠️ Attention: Attempts to solder the tubes yourself or top up freon without a vacuum pump and pressure gauges will lead to final breakdown of the compressor. Such work requires a license and special equipment.
The table below shows the main symptoms and their probable causes associated with the motor-compressor:
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Clicks and is silent | The starting relay is faulty or the compressor is jammed | Low / High |
| Humming constantly, without turning off | Freon leak or loss performance | High |
| The motor housing gets very hot | Interturn winding short circuit | Replacing the motor |
| Works jerkily | Problems with electronics or network voltage | Medium |
How to check the starting relay?
To check the relay, you need to remove it from the compressor and shake it. If a ringing sound is heard inside (like from broken glass), it means that the contacts are damaged and the part requires replacement. You can also test the contacts with a multimeter.
Freon leakage and system blockage
Refrigerant (freon) is a working fluid that circulates through the tubes, taking heat from the chambers. If a microcrack has formed in the system (for example, due to corrosion or mechanical damage during washing), the gas gradually evaporates. Freon leak this is one of the most common reasons why the refrigerator stops freezing.
Signs of a leak are: warm or barely warm condenser at the back, lack of cold when the compressor is running, sometimes oily spots under the refrigerator (oil comes out along with gas). In modern models with a system No Frost a leak can be suspected by the swelling of the rear wall inside the freezer.
Clogging of the capillary tube is another technical problem. It occurs due to moisture entering the system or clogging of the compressor with wear products. The symptoms are similar to a leak: the compressor works, but there is no cold. Diagnostics requires connecting a pressure gauge station.
Restoring tightness and refilling with freon is a complex process. The technician must find the location of the leak (often these are sealed places or a “crying” type evaporator), seal it, replace the filter drier, create a vacuum in the system and only then fill in the exact amount of refrigerant. Independent refilling with cans from a car service is unacceptable for refrigerators, since different types of freon and oils are used.
Failures in the operation of electronics and thermostat
In models Biryusa with electronic control, the control module is responsible for all processes. Voltage surges in the network can lead to blown fuses or failure of triacs that control the compressor. If the display shows errors or it does not respond to buttons, the problem is most likely in the “electronics.”
The thermostat (thermostat) is a sensor that tells the compressor when to turn on and when to turn off. If it is faulty, the refrigerator may “think” that it is already cold enough inside and not start the motor. Or vice versa - work without interruption. In mechanical models, the thermostat is a box with a tube that is inserted into the evaporator.
To check the thermostat in mechanical models, you can close its contacts directly (observing safety precautions!). If after this the compressor starts, it means the sensor is faulty. In electronic models, diagnostics are carried out with a multimeter by measuring the resistance of temperature sensors under different conditions.
It is also worth checking the integrity of the wiring. Rodents or vibration during transportation could damage the wires going to the fan or defrost heating element. Visual inspection of the wiring harnesses inside the case (after removing the back panel) often helps to find a break.
When you need to call a technician
Despite the desire to save money, there are situations when professional intervention is necessary. If you checked the outlet, defrosted the unit, checked the seal, but the problem was not solved, a complex repair is probably required. This is especially true for cases when welding pipes or working with (high pressure) is required.
Call a specialist if:
- 🔴 The compressor is hot, hums, but does not start (starting with a PZR does not help).
- 🔴 Traces of oil are visible on the floor or on the back wall refrigerator.
- 🔴 There is a smell of burning or scorched wiring inside the chambers.
- 🔴 The electronic control module makes strange sounds or sparks.
Professional repairs often include not only the replacement of a part, but also a guarantee for the work performed. Self-repair of complex components can lead to the fact that the service center will refuse it or the cost of restoration will increase significantly.
⚠️ Attention: Prices for spare parts and services of specialists may vary depending on the region and exchange rates. Before starting work, always check the final cost of diagnostics and repairs with the contractor.
Prevention and extension of service life
To ensure that your Biryusa pleases with the cold for many years, follow simple operating rules. Do not place hot food in the chamber - this will place excessive load on the system. Keep the rear of the condenser clean: dust and animal hair adhering to the grille worsen heat transfer and make the motor work harder.
Regularly check the condition of the seals. Wipe them with a soft cloth soaked in soapy water and lubricate them with silicone grease every six months to prevent the rubber from drying out and cracking. This will maintain tightness and save energy.
Do not overload the shelves with products. Air circulation is the key to uniform cooling. If you notice that your refrigerator is running louder or longer than usual, do not ignore these signals. Early diagnosis helps to avoid expensive major repairs.
Why does the Biryusa refrigerator work, but does not freeze after defrosting?
If after defrosting the cold does not appear within 2-4 hours, the defrosting heating element or the timer that was supposed to start the cooling cycle may have failed. There could also be a freon leak, which simply coincided with defrosting.
Is it possible to use a Biryusa refrigerator if it does not freeze well?
You can operate the equipment at partial capacity for a short time, but this is harmful for the compressor. It will work hard, trying to gain temperature, which will lead to overheating and rapid breakdown. Products can deteriorate in this mode.
What kind of freon is used in Biryusa refrigerators?
Most modern models use environmentally friendly refrigerant R600a (isobutane). In older models, R134a may be found. The type of refrigerant is indicated on a technical sticker, which is usually located inside the chamber or on the back wall.
How long should the refrigerator cool down after defrosting?
The full cycle of returning to operating mode after a long defrost takes from 2 to 6 hours, depending on the model and the volume of loaded products. It is better to load products after the empty chambers have reached temperature.