The situation when the refrigerator Biryusa stops freezing always takes you by surprise. Food can begin to spoil within just a few hours, so you need to act quickly and wisely. Most often, the problem lies not in the breakdown of the entire unit, but in the malfunction of one of the components of the cooling system.
The first thing to do when a malfunction is detected is to carry out an initial diagnosis. You need to understand whether the device is turned on, whether the light inside the chamber is on and whether the hum of a running motor is heard. Visual inspection And listening to the sounds of the compressor will help narrow down the range of possible causes of the breakdown before the technician arrives.
You should not immediately panic or look for the service center number. In half of the cases, users themselves can fix simple faults, such as a door that is not tightly closed or the thermostat settings are off. However, if the problem is more serious, a timely understanding of the symptoms will help you more accurately describe the problem to a specialist.
Primary diagnosis: why the compressor is silent or hums in vain
If you find that the chamber is warm, first check the operation of the compressor. This is the heart of your refrigerator Biryusa. If the motor makes absolutely no sound or vibrates when touched, the problem may be a lack of power or a burnt-out start relay. In this case, electrical circuit is broken, and the refrigerant does not circulate through the system.
⚠️ Attention: If you smell burning or see sparking in the compressor area, immediately unplug the device. Further operation may lead to a fire.
In a situation where the compressor is humming, but there is no cold, the situation may be more complicated. Perhaps water hammer or jamming of the piston group has occurred. There is also a common scenario where the motor operates jerkily: it turns on for a few seconds, hums and turns off with a characteristic click. This is a sure sign of a malfunction of the starting device or motor windings.
Also check whether the unit itself has overheated. If the refrigerator is located close to the wall or heating radiators are located nearby, the efficiency of heat transfer decreases. Compressor overheating causes it to go into protection, and cooling stops. Move the equipment away from the wall at least 10 centimeters for normal air circulation.
Problems with the thermostat and temperature sensors
One of the most common reasons why Biryusa it does not freeze well is the failure of the thermostat. This element is responsible for turning the compressor on and off depending on the temperature inside the chambers. If thermostat is faulty, it may not give a command to start the motor, even if it is already warm in the refrigerator.
In models with electronic control (No Frost), sensors are responsible for the temperature regime. There may be several of them: one controls the evaporator, the other controls the air in the chamber. If defrost sensor or the temperature sensor fails, the control module receives incorrect data and does not start the cooling cycle. This is often accompanied by an error on the display, if it is provided for by the design.
Diagnostics of the thermostat in mechanical models is possible at home. To do this you need:
- ❄️ Find the temperature regulator (usually inside the refrigerator compartment or on the front panel).
- ❄️ Turn the knob to the maximum cold position and listen to the click.
- ❄️ Check the thermostat contacts for oxidation or carbon deposits.
If, after testing the contacts with a multimeter, it turns out that the circuit does not close when cooling, the part requires replacement. Remember that calibration a new thermostat can take up to 24 hours, so do not rush to draw conclusions immediately after repair.
How to check a thermostat with a multimeter?
Remove the thermostat, immerse its sensitive tube in ice water for 2-3 minutes. Then call your contacts. If the device shows a break (infinity), then the thermostat is faulty and requires replacement. In good condition at low temperatures, the contacts should be closed.
Freon leak: symptoms and finding the location of damage
If the compressor works continuously, trying to reach the temperature, but there is no cold in the chambers, there is a high probability of a refrigerant leak. Freon - this is the working fluid of the refrigeration machine, and without its circulation heat exchange is not possible. A leak can occur due to corrosion of tubes, mechanical damage during transportation, or factory soldering defects.
It is difficult to determine a leak visually, since the gas is colorless and odorless. However, there are indirect signs. Pay attention to the back wall of the refrigerator: if the radiator grille remains cold or only partially warms up, this is an alarming sign. Also, oily stains may appear on the floor under the refrigerator - this is oil from the compressor, which comes out along with the gas.
Critical importance: attempts to independently fill the refrigerator with freon without finding and eliminating the leak are useless. The gas will leave again after a few days or even hours. Repair in this case requires calling a technician with equipment to search for leaks (leak detector) and evacuate the system.
Often leaks occur at soldering points or in the foamed part of the housing where the evaporators are located. If the tubes are rotten from the inside (aluminum evaporators are susceptible to corrosion), repair may not be economically feasible. In such cases, technicians often suggest installing an external evaporator (crying), which is a temporary but working solution.
Clogged capillary tube and malfunction of the No Frost system
In refrigerators Biryusa with the No Frost system, there is often a problem with the formation of a “snow coat” on the evaporator, which blocks circulation air. If you see that the freezer is working, but the refrigerator compartment is warm, the air exhaust duct may be clogged or out of order fan. The fan blades may freeze to the ice, and the motor will burn out trying to turn them.
Another technical reason is clogged capillary tube. In the narrow channel through which freon enters the evaporator, a plug of technical dirt or frozen moisture may form. The symptoms are similar to a leak: the compressor is running, the condenser is hot, but there is no cold. In this case, the compressor itself can become very hot.
☑️ Diagnostics of the No Frost system
To eliminate the blockage, professional cleaning of the system with nitrogen under pressure and replacement is required filter drier. The filter drier must be changed whenever the circuit is opened, as it absorbs moisture from the air and loses its properties. An attempt to simply blow out the system without replacing the filter will lead to re-clogging soon.
If the problem is in the No Frost defrosting system, then ice builds up on the evaporator, blocking the access of cold air to the chamber. In this case, completely defrosting the refrigerator within 24 hours helps. If after defrosting the device worked normally, but a week later the problem recurred, look for a fault in the defrost circuit (heating element, timer, sensors).
Comparison of symptoms: table of faults
To make it easier for you to navigate possible breakdowns, we have compiled a table comparing symptoms with probable causes. This will help you preliminary understand the scale of the disaster.
| Symptom | Probable cause | Necessary actions |
|---|---|---|
| The compressor does not turn on, there is silence | No power, the relay is burned out, the thermostat is faulty | Check the socket, ring the thermostat |
| It buzzes for 5-10 seconds and clicks | Faulty starting relay or compressor | Replacing the relay, checking the motor windings |
| Works constantly, no cold | Freon leak or clogged capillary | Call a technician for leak detection |
| It’s cold in the freezer, it’s warm in the refrigerator compartment | No Frost system malfunction, clogged air duct | Defrost 24 hours, check the fan |
This table covers the most common scenarios. However, it is worth considering that in different models Biryusa (for example, series 133, 355 or 630) design features may differ. Some models may have one compressor for two chambers, others - two.
When professional repair and replacement of components is necessary
There are a number of malfunctions that cannot be eliminated at home without special equipment. These include all work related to leakage refrigeration circuit. If a freon leak or blockage is confirmed, you will need to solder the tubes, evacuate the system and fill with gas.
Replacing a compressor is a complex procedure that requires not only soldering skills, but also the correct selection of oil. Modern refrigerators Biryusa often have motors running on synthetic oil, which cannot be mixed with mineral oil. An error in selection will lead to rapid failure of the new compressor.
⚠️ Attention: When replacing a compressor, be sure to use a torch with nitrogen purge. Soldering copper tubes without nitrogen supply inside leads to the formation of an oxide film, which clogs the system and disables the equipment.
Also, professional intervention requires replacing the evaporator if it is located in the foamed part of the body (in the wall or bottom of the freezer). In this case, craftsmen often use a trick by installing a “crying” evaporator inside the chamber, which looks less aesthetically pleasing, but restores the functionality of the device.
Prevention and operating rules for the Biryusa refrigerator
In order for your refrigerator to serve for a long time and not cause problems with cooling, it is important to follow the operating rules. Regularly, at least once a year, wash the device. Even in No Frost systems, it is recommended to give the equipment a rest to evaporate moisture from hard-to-reach places. defrosting and washing the device. Even in No Frost systems, it is recommended to give the equipment a rest to evaporate moisture from hard-to-reach places.
Monitor the condition of the rubber seal on the door. If it does not fit tightly, warm, moist air constantly enters the chamber. This leads to increased ice formation and increased load on the compressor. Wipe the rubber band with a soft cloth and check its elasticity.
Do not load hot foods into the chamber. This causes a sudden jump in temperature and humidity, which can lead to thermostat failure or ice build-up on the evaporator. Also try not to place the refrigerator near heat sources and ensure ventilation of the rear grille.
Frequently asked questions (FAQ)
Why a refrigerator Does turquoise freeze only from above or only from below?
This is a characteristic sign of problems with the circulation of refrigerant or air. If the bottom does not freeze (in two-chamber models), the No Frost system is often to blame: a frozen evaporator or a non-working fan does not drive cold air down. If the top does not freeze, a freon leak is possible - the gas only reaches the first part of the circuit, but its quantity is not enough for the entire volume.
How long should Biryusa defrost after turning off?
For complete defrosting and evaporation of moisture from hard-to-reach places, the refrigerator requires at least 24 hours. Do not turn on the appliance immediately after the ice has melted. Let it sit with the doors open to dry the electronics and drainage system. Turning on a wet appliance can lead to a short circuit.
Is it possible to replace the thermostat in the Biryusa refrigerator yourself?
Yes, if you have skills in working with electricians and a multimeter. Replacing a mechanical thermostat does not require opening the freon circuit. The main thing is to choose the right analogue according to the length of the capillary tube and temperature range. However, if you are not confident in your abilities, it is better to entrust this to professionals so as not to break the seal of the chamber.
What to do if after defrosting the refrigerator still does not freeze?
If 24-hour defrosting did not help, then the problem is of a technical nature. Most likely, a freon leak has occurred, the capillary tube has become clogged, or the compressor has failed. In this case, it is necessary to call a specialist to carry out a full diagnostic using a pressure manifold.