Brand refrigerators Biryusa have earned a reputation as reliable equipment that can operate for years without serious failures. However, even the most time-tested units, especially two-chamber models, may eventually require the intervention of a master or an attentive owner. If your refrigerator has stopped freezing, started making strange sounds, or ice has appeared on the walls, this does not always mean the need to urgently call a professional.
Before taking active steps, it is necessary to conduct a thorough initial diagnosis. Often the reason lies in trivial things: a leak, improper installation, or malfunctions in the defrost system. Independent refrigerator repair is possible only if you have basic skills in working with tools and strict adherence to safety precautions.
In this article we will analyze in detail the algorithms for identifying faults, methods for eliminating them and the nuances of servicing the compressor group. It is important to understand that a two-chamber system has its own characteristics that differ from single-chamber analogues, and requires a more careful approach to adjusting temperature conditions.
Fault diagnosis: where to start
The first step in any repair is to accurately determine the symptoms. Do not rush to disassemble the unit until you have collected as much information as possible about its behavior. Pay attention to the operation of the compressor: whether it starts, how long it runs and what sound it makes. A humming sound that turns into knocking, or complete silence of the motor are key indicators of a problem.
Check the temperature conditions in both chambers. If food melts in the freezer, but everything freezes in the refrigerator compartment, the problem may lie in a refrigerant leak or a malfunctioning thermostat. It is also worth inspecting the rubber seals on the doors - their wear leads to loss of tightness and the formation of a “fur coat.”
- 🔍 Check the integrity of the power cord and the presence of voltage in the outlet.
- 🔊 Listen to the sounds when starting: relay clicks or humming without starting.
- 🌡️ Assess the uniformity of cooling in different zones of the chambers.
- ❄️ Inspect the evaporator for excessive frosting or complete absence of ice.
If you notice that the compressor is running continuously without turning off, this may indicate a loss of refrigerant or a decrease in the performance of the compressor itself. In such cases, it is often necessary refilling with freon or replacing the motor, which is already a complex technical intervention.
⚠️ Attention: If you smell burnt insulation or see sparking in the compressor area, immediately unplug the refrigerator. Continued use may result in a fire.
Do not ignore visual signs. Blistering of the rear wall, rust on the body or oily stains under the unit indicate serious internal problems. Oil traces often indicate depressurization of the circuit, which requires specialized equipment to eliminate.
Faults in the defrost system and ice formation
One of the most common problems with two-chamber models Biryusa is a malfunction of the No Frost or drip defrosting system. If you see that the back wall of the refrigerator compartment is covered with a thick layer of ice, and food is frozen to the shelves, then the defrost cycle is broken. This may be caused by a failure of the heating element, timer or defrost sensor.
In models with manual defrosting, the appearance of a “fur coat” most often indicates a loose fit of the door or frequent opening of the refrigerator in the hot season. However, if ice builds up quickly even with careful use, it is worth checking the thermostat. A faulty thermostat may not give the command to turn off the compressor, which is why moisture constantly freezes on the evaporator.
To diagnose the defrost system in No Frost models, you need to get to the evaporator, hidden behind the back panel of the freezer. It is important here to check the integrity of the heating element. If the heating element “rings” with the tester, but does not heat, there may be a problem in the control circuit or fuse.
- 🔥 Check the resistance of the defrosting heating element with a multimeter.
- 🕰️ Test the defrost timer for switching modes.
- 💧 Make sure that the drainage the hole is not clogged with debris or ice.
Often the cause of the formation of an ice plug in the drainage channel is dirt or crumbs. You can clean the channel using a soft wire or a special brush, after defrosting the unit. After cleaning, it is recommended to pour a little warm water into the hole to make sure that it flows freely into the tray above the compressor.
If the defrost system is working properly, but ice still appears, check the tightness doors. Place a piece of paper between the door and the cabinet and close the refrigerator. If the paper comes out easily, it means that the seal does not fit tightly and requires replacement or adjustment.
Problems with the compressor and start relay
The heart of any refrigerator is the compressor. If Biryusa it hums, but does not cool, or the motor tries to start, clicks and stalls, the problem lies in the starting device or the compressor itself. The starting relay is responsible for supplying the initial impulse to the motor winding, and its failure is one of the most common causes of failure.
Replacing the starting relay with your own hands is quite simple. It is usually mounted on the side of the compressor and secured with a bracket. After removing the old relay, inspect it for melting or cracks. Even if there are no visual defects, the internal contact group could be worn out. Replacing with a device similar in marking often brings the refrigerator back to life.
A more serious situation arises if the compressor has an interturn short circuit or a jammed piston group. In this case, replacing the relay will not help. You can check the windings with a multimeter by measuring the resistance between the contacts. If the resistance tends to zero or infinity, the compressor is faulty.
| Symptom | Possible cause | Difficulty of repair |
|---|---|---|
| Clicks and does not start | Faulty starting relay | Low |
| Humming, but not cooling | Freon leak or clogged capillary | High |
| Works without stopping | Thermostat is faulty or leaking | Medium/High |
| The housing is very hot | Incorrect installation or wear | Low |
Replacement compressor is a complex process that requires a vacuum pump, a pressure gauge station and skills in soldering copper pipes. It is not recommended to undertake this operation on your own without experience, since incorrect soldering or insufficient vacuum will lead to rapid breakdown of the new motor.
Why does the compressor burn out?
A frequent cause of combustion is not only natural wear and tear, but also operation in abnormal modes. For example, if the refrigerator stood in a horizontal position for a long time and was immediately turned on, oil could enter the circuit, creating a water hammer.
Replacing the thermostat and adjusting the temperature
The thermostat (thermostat) is a device that controls the temperature inside the chambers and controls the activation of the compressor. If your refrigerator Biryusa stops turning off or, conversely, does not start at all, this element is often the culprit. In two-chamber models, the thermostat is usually located in the refrigerator compartment.
To replace, you need to remove the regulator handle and the decorative trim, then unscrew the fastening screws. It is important to remember the order in which the wires are connected to the thermostat contacts so as not to confuse them when installing a new one. Before dismantling, take a photo of the connection diagram.
After installing a new thermostat, adjustment may be required. There is a screw on the body of the device that allows you to adjust the temperature range. However, the factory settings are usually optimal, and you should only interfere with them if you have an accurate thermometer and understand the required parameters.
- 🛠️ Disconnect the refrigerator from the electrical outlet before starting work.
- 📸 Take a photo of the connection of the wires to the old thermostat.
- 🌡️ Install a new thermostat with similar parameters.
- 🔧 Check the tightness of the bellows tube to the evaporator.
If the situation has not changed after replacing the thermostat, the problem may be deeper. The thermal insulation may be damaged or there may be a malfunction in the electronic control module (if the model is equipped with electronics). In such cases, more in-depth diagnostics using professional equipment are required.
☑️ Replacing the thermostat
Fixing leaks and charging with refrigerant
Freon leakage is one of the most unpleasant malfunctions that owners may encounter two-chamber Biryus. Symptoms include little or no cooling, with the compressor running almost non-stop. There may be no characteristic heating on the condenser tubes, and oily spots are often visible at the leak site.
You can find the leak location using a soap solution or a special leak detector. All connections, compressor inlets and visible parts of pipelines are treated with soapy water. The appearance of bubbles will indicate the location of depressurization. However, in the foamed parts of the case (the evaporator inside the cabinet) it is more difficult to find a leak, and the installation of an external “crying” evaporator is often required.
⚠️ Attention: Filling a refrigerator with freon requires special equipment and a license. Self-filling “by eye” without evacuation of the system will lead to compressor breakdown and the formation of an ice plug in the capillary.
The process of restoring the tightness includes searching and soldering the leak, installing a filter-drier, evacuation of the circuit and charging a strictly defined amount of refrigerant indicated on the refrigerator nameplate. The type of freon (R134a or R600a) is also critical.
If the leak occurs in the foamed part (inside the wall), repairs become economically feasible only when using a mounted evaporator. Otherwise, it is easier to purchase a new refrigerator, since opening the foam and restoring the thermal insulation is a labor-intensive and not always effective process.
Noise, vibration and extraneous sounds
The refrigerator Biryusa should not make loud, frightening sounds. A quiet hum from the compressor and occasional gurgling of the refrigerant is considered normal. If you hear knocking, grinding or strong rattling, you need to look for the cause. Often the source of noise is the housing itself or improperly installed equipment.
Check the installation of the refrigerator. It must stand strictly horizontally, which is adjusted by the front legs. If the unit is misaligned, the compressor may vibrate and create resonance with the cabinet or furniture. Also make sure that the refrigerator does not touch the wall or other objects.
Extraneous sounds may also come from internal components. Loose fastenings of the compressor, condensate tray or fan (in No Frost models) cause rattling. In models with a fan, noise may occur when the evaporator freezes when the blades touch the ice.
- 🔊 Check the distance between the refrigerator and the wall (at least 5-10 cm).
- 🔩 Tighten the fastening bolts of the compressor and protective casing.
- 🌬️ Inspect the fan for foreign objects.
- 🧊 Make sure that the products on the shelves do not vibrate due to the operation of the motor.
If the noise appears suddenly and is accompanied by vibration, the tubes inside the housing may have shifted. In this case, the tubes may touch each other or the compressor housing. By carefully bending them by hand (with the appliance turned off!), you can eliminate the rattling noise.
Why does the refrigerator click?
Periodic clicks during operation are normal. They are emitted by the thermostat when the contacts or relays open when attempting to start. You should sound the alarm if the clicks become frequent and the refrigerator does not start.
Prevention and extension of service life
In order for a two-chamber refrigerator Biryusa to serve for a long time and not require frequent repairs, you must follow the operating rules. Regular defrosting (for drip systems), timely washing and proper placement of products is the key to the health of your unit. Do not overload the shelves and do not place hot dishes inside.
Once every six months, it is recommended to completely defrost and thoroughly wash the internal surfaces. Use mild detergents without abrasives. Pay special attention to the drainage hole - its cleanliness ensures that there is no water at the bottom of the refrigerator compartment.
It is also important to monitor the condition of the seals. They need to be wiped clean from grease and dirt, and if they lose elasticity, lubricate them with silicone grease or replace them. A good seal means saving energy and preserving food.
How often do you need to defrost the Biryusa refrigerator?
Models with a drip system (“crying wall”) require defrosting 1-2 times a year if a thick crust of ice has not formed. Models with the No Frost system do not need defrosting, but it is recommended to carry out preventive cleaning once every 6-12 months.
Is it possible to repair a refrigerator if it is under warranty?
It is strictly not recommended to open the seals and carry out repairs yourself if the warranty period is valid. This will void your warranty. In the event of a breakdown, contact an authorized service center.
Why does the refrigerator not turn on for a long time after defrosting?
After defrosting and turning on the network, the compressor takes time (from 15 minutes to 2 hours) to reach the desired temperature and enter operating mode. If there is no cooling within 2-3 hours, there may be a freon leak or a compressor failure.
What kind of freon is used in Biryusa refrigerators?
Depending on the year of manufacture and model, freon R134a (tetrafluoroethane) or isobutane R600a can be used in Biryusa refrigerators. The type of refrigerant is always indicated on the factory sticker located inside the chamber or on the back wall.