Owners of domestically produced equipment are often faced with a situation where an ice crust begins to actively form inside the refrigerator or freezer. This is not just an aesthetic defect that prevents the shelves from closing, but also a serious signal of a malfunction cooling systems. If you notice that ice is freezing in the Biryusa refrigerator, you need to quickly identify the source of the problem in order to prevent compressor failure or refrigerant leakage.
Modern models, even those equipped with the system No Frostare not immune to such failures. The reason may be either a simple failure to comply with operating rules or a technical malfunction of sensors or heaters. In this guide, we will analyze in detail all possible scenarios, from simple user errors to complex breakdowns that require the intervention of a technician.
Primary diagnostics and visual inspection
Before sounding the alarm and calling a repair team, conduct an independent inspection of the unit. Often the answer to the question why Biryusa freezes in the refrigerator lies in simple things that can be eliminated in a few minutes. Carefully inspect the rubber seals around the perimeter of the door: they should fit snugly to the body along the entire length.
Check whether anything is preventing the door from closing tightly - for example, the edge of a grocery bag or a displaced shelf. If the seal is dirty, it must be washed with warm water and a mild detergent, as grease and crumbs will compromise the seal. A tight fit of the seal is a critical factor, since even a microscopic gap of 1 mm leads to a constant flow of warm, moist air, which instantly turns into frost.
Also pay attention to the location of the products inside cameras. They should not fit closely to the rear wall where the evaporative elements are located. Impaired air circulation in this area is one of the most common causes of local icing.
⚠️ Attention: If you find mechanical damage to the rubber seal (cracks, tears), simple washing will not help. The part will need to be replaced, otherwise the problem will worsen.
Violation of operating rules as a cause of icing
Often users themselves create conditions for the formation of ice, without knowing it. The main enemy of any refrigerator is hot or warm food. If you put a pot of soup or a baking sheet with freshly cooked meat in the chamber, the cooling system receives a tremendous load.
The moisture that intensively evaporates from hot foods condenses on the cold walls and freezes. In models with manual defrosting, this leads to the formation of a “fur coat”, and in systems No Frost moisture may not have time to be removed, clogging the channels.
Another common mistake is storing liquids in open containers. Water, compotes or milk must be covered with lids. The open surface of the liquid constantly releases moisture into the air of the chamber, increasing the humidity to critical values.
In addition, frequent and prolonged opening of the door, especially in the hot season, leads to a sharp jump in humidity inside. The moisture removal system may not be able to cope with such a volume of condensate.
Compliance with the temperature regime also plays a key role. If the thermostat is set to maximum cooling unnecessarily, this can lead to freezing of food and the formation of ice jams.
Problems with the defrosting system in No Frost models
If your Biryusa refrigerator is equipped with a system No Frost, but ice still appears, it means that the automatic defrosting cycle is broken. In such units, frost accumulates on a hidden evaporator, and then is melted by a heating element (heating element) and flows into the drain.
If one of the components of this circuit fails, the ice stops melting and begins to grow, eventually blocking the air circulation channels. As a result, the cold stops flowing normally into the chamber, and a “snow coat” grows inside.
The main elements of the defrost system that can fail:
- ❄️ Defrost heating element —a heating element that can burn out and stop heating.
- ❄️ Defrost sensor —a thermostat that gives a command to turn the heater on or off.
- ❄️ Timer or electronic module —a device that regulates the compressor and defrost cycles.
Diagnostics of these elements requires the use multimeter to check resistance. If the heating element shows an open circuit, it must be replaced with one of similar power and dimensions.
⚠️ Attention: Before checking the electrical components, be sure to disconnect the refrigerator from the power supply! Working with live wiring is life-threatening.
Clogged drainage system
One of the most common reasons why water does not drain, but freezes at the bottom of the chamber or on the back wall, is a clogged drain hole. During the defrosting process, water flows down a groove into a tube, which discharges it into a container above the compressor, where it evaporates.
Over time, dust, crumbs, mold and greasy deposits accumulate in this groove. A plug is formed that prevents the water from leaving. Water accumulates, overflows over the edge of the groove and freezes on the floor of the refrigerator or under the vegetable drawers.
☑️ Cleaning the drainage hole
For cleaning, you can use a special soft wire or a long brush. You must act carefully so as not to pierce the plastic and damage the tube. After mechanical cleaning, it is recommended to pour a little warm water into the hole to make sure there is free flow.
If water constantly stands in the groove, this may indicate not only a blockage, but also an incorrect angle of inclination of the refrigerator. Check the adjusting legs: the unit should be level or slightly tilted back so that the water flows by gravity into the drainage.
Malfunctions of the thermostat and sensors
The thermostat (thermostat) is the “brain” that controls the operation of the compressor. It measures the temperature inside the chamber and gives the command to turn on or off. If this appliance malfunctions, the refrigerator can work without interruption, freezing all the contents and creating thick ice build-ups.
Signs of a malfunctioning thermostat:
- 🌡️ The compressor works almost non-stop, the humming does not stop.
- 🌡️ Products in the refrigerator compartment freezes, although it should simply be cooled.
- 🌡️ A massive layer of ice forms on the back wall, which does not melt during idle time.
In modern Biryusa models with electronic control, instead of a mechanical thermostat, air temperature sensors are used. If such a sensor “lies” and shows that the chamber is warmer than it actually is, the control module will drive the compressor to the bitter end.
Replacing the thermostat is a procedure accessible to a home handyman with basic skills. However, in models with electronics, flashing or complex diagnostics of the control board may be required.
How to check a mechanical thermostat?
To check a mechanical thermostat, you can close its contacts directly. If the compressor starts working after the short circuit, it means that the thermostat itself is faulty and requires replacement. But this method is only suitable for experienced users who know the connection diagram.
Freon leakage and problems with the compressor
A more serious cause of icing is a violation of the tightness of the cooling circuit. If there is little refrigerant (freon) in the system, the pressure drops and the boiling point of freon shifts. As a result, the evaporator may become covered with an uneven layer of frost or ice only at the beginning of the circuit.
Often, when there is a freon leak, an ice “coat” appears exactly where the tube exits the foamed part of the housing or near the evaporator. In this case, the compressor can work constantly, trying to gain temperature, but not coping with the task.
Symptoms of a refrigerant leak:
- 🔧 Ice builds up only in one specific place (locally).
- 🔧 The refrigerator hums continuously, but the temperature in the chamber does not drop to the required values.
- 🔧 The condenser grille at the back (black) remains cold or barely warm, although it should be hot.
It is impossible to fix the leak and fill the refrigerator with freon on your own. This requires a vacuum pump, a pressure gauge station and a supply of refrigerant. In addition, it is necessary to find the location of the leak, which often requires disassembling the foamed parts of the case.
Table: Comparison of symptoms and causes
To make it easier for you to navigate possible malfunctions, we have compiled a summary table of the main symptoms and their probable causes.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Ice only on the back wall | Thermostat or sensor is faulty | Low |
| Water at the bottom camera | Drain hole clogged | Low |
| Ice all around | Door does not close tightly | Low |
| Ice in the No Frost system | The defrost heating element or timer has burned out | Average |
| Local ice ball | Freon leakage | High (need master) |
Regular maintenance of equipment prolongs its life. Once every six months, it is recommended to carry out a complete defrost (even for systems No Frost), flush the drainage and check the cleanliness of the condenser at the back.
When it is necessary to call a specialist
Despite the possibility of self-repair of many components, there are situations when the intervention of a professional is inevitable. If you have checked the seals, cleaned the drainage and made sure that the thermostat is working, but the problem persists, most likely the problem is hidden defects.
Be sure to contact the service center if:
- 🛠️ You hear gurgling or hissing inside the system (a sign of a leak).
- 🛠️ The compressor is hot to the touch, but the refrigerator does not freeze.
- 🛠️ After defrosting, the ice builds up again within a few hours.
- 🛠️ A burning smell has appeared or the humming has changed to an intermittent sound.
A qualified technician will carry out diagnostics using special tools, pinpoint the location of the leak or breakdown of the electronics and carry out high-quality repairs with a guarantee.
⚠️ Attention: Do not try to break off the ice yourself with a knife or sharp objects! You can damage the evaporator, and then a simple repair will turn into an expensive replacement of the entire circuit or the purchase of a new refrigerator.
Biryusa refrigerators are known for their reliability and maintainability. Knowing the main causes of malfunctions will help you keep your equipment in working condition for many years.
Why does ice freeze in the Biryusa freezer, but everything is fine in the refrigerator compartment?
This is a classic sign of impaired air circulation in the systems No Frost. An ice plug in the air supply channel blocks the access of cold to the upper chamber, while the cold remains in the freezer. This may also indicate a malfunction of the thermal control damper.
How often do you need to defrost the Biryusa refrigerator?
Models with manual defrosting require defrosting when a layer of ice 3-5 mm thick forms (usually once every 3-6 months). Systems No Frost i Frost Free do not require forced defrosting, but preventive washing and shutdown for a day are recommended once a year.
Is it possible to use a hair dryer to speed up the defrosting of ice?
You can use a hair dryer, but with great caution. Direct the stream of warm (not hot!) air only at the ice, avoiding contact with plastic parts that may become deformed and electrical contacts. It is better to defrost naturally, leaving the doors open.
What to do if the refrigerator does not turn on after defrosting?
Let the appliance stand unplugged for another 3-4 hours. There may be some moisture left in the system that needs to evaporate. If after this the refrigerator is silent, check the fuses in the apartment and the outlet. If the network is working properly, the problem is in the start relay or compressor, you need a technician.