Modern brand refrigerators Beko they have long ceased to be just boxes for storing food, having turned into complex climate systems. Owners often wonder why a snow coat does not form inside, although the freezer is operating at full capacity. The answer lies in the technology No Frostwhich is radically different from the principle of operation of old models with a crying evaporator.
The principle of operation is based on forced air circulation, and not on natural convection exchange. Cold air does not stagnate at the bottom or in the upper corners, but constantly moves throughout the entire volume of the chamber, ensuring uniform cooling of products. It is this process that prevents moisture condensation on the internal walls and products, which eliminates the need for manual defrosting.
However, many users mistakenly believe that ice cannot appear in such refrigerators at all. This misconception often leads to incorrect operation and breakdowns. Understanding the physical processes occurring inside the unit Bekowill help you avoid common mistakes and extend the life of the compressor.
Physics of the process: where does the cold come from
The system is based on a hidden evaporator located behind the back wall of the refrigerator or freezer. Unlike classic models, where the cooling panel is in direct contact with the chamber air, here heat exchange occurs in an isolated circuit. Beko lies a hidden evaporator located behind the back wall of the refrigerator or freezer. Unlike classic models, where the cooling panel is in direct contact with the chamber air, here heat exchange occurs in an isolated circuit. Fan drives the air through this hidden heat exchanger, where it is sharply cooled, and then distributes it through special channels.
Moisture contained in the air and released products, settles not on the shelves, but on the cold hidden evaporator, turning into frost. The heating element (heating element) turns on periodically, which melts this frost. The resulting water flows into a special pan located above the compressor, where it safely evaporates. This cycle is repeated automatically at specified intervals. Heating element (heating element) that melts this frost. The resulting water flows into a special pan located above the compressor, where it safely evaporates. This cycle repeats automatically at specified intervals.
⚠️ Attention: If you hear periodic crackling or the sound of pouring water even when the door is closed, this is normal operation of the defrost system, and not a sign of malfunction.
The key element here is precise operation sensors that monitor the evaporator temperature and heater operating time. If one of these components fails, the system will no longer function correctly, which can lead to freezing of the ducts.
Technical details of the hidden evaporator
The hidden evaporator in Beko models often has an aluminum surface with copper tubes. It is on this surface that the bulk of moisture freezes. The area of this element is designed so as to have time to absorb all the moisture from the chamber before the next defrost cycle.
Design features of Beko refrigerators
Engineers Beko have implemented several unique solutions in their cooling systems. First of all, it is worth noting the technology NeoFrostwhich is used in two-compressor models. In such devices, the refrigerator and freezer compartments have independent cooling circuits and their own evaporators.
This means that odors from the freezer do not penetrate into the refrigerator compartment, and food does not become airy. In addition, a higher level of humidity is maintained in the refrigerator compartment, which is ideal for storing vegetables and fruits, while in the freezer the air remains as dry as possible.
Models with one compressor use a system Dual Cooling or similar variations, where dampers regulate the supply of cold air to different zones. These dampers are controlled by an electronic module that reads the readings of temperature sensors.
- 🌪️ Fan: Ensures uniform distribution of air masses, preventing the formation of zones with different temperatures.
- 🔥 Defrost heater: Short-wave heating element, which quickly melts the ice on the evaporator without heating the internal chamber space.
- 🌡️ Sensors: Control the temperature of the evaporator so that the defrost is turned on and off at the right moment.
It is important to understand that the complexity of the design requires careful handling. Any mechanical damage to the rear wall can break the tightness of the channels or damage the hidden elements of the system.
Why ice appears and snow freezes
Despite the name of the technology, users sometimes encounter the fact that an ice crust or a snow coat still appears in the freezer. This is not due to a failure of the No Frost system, but for a number of specific reasons related to a violation of tightness or operating rules. Beko Still, an ice crust or a snow coat appears. This is not due to a failure of the No Frost system, but for a number of specific reasons related to a violation of tightness or operating rules.
The most common reason is a violation of the sealing rubber on the door. If the rubber does not fit tightly, warm, moist air from the room constantly enters the chamber. The No Frost system simply does not have time to dry this volume of moisture, and it settles in the form of snow on the products and walls.
⚠️ Attention: If ice forms only in one corner or locally on the products, in 90% of cases the problem is a loose door or a damaged seal.
Another reason may be a clogged drainage hole. Melt water should flow freely into the pan. If the duct is clogged with crumbs or ice, water freezes inside the system, blocking the operation of the fan and dampers. As a result, the cold stops circulating and moisture is not removed.
It is also worth mentioning the human factor. Placing hot or simply warm food in the chamber leads to a sharp jump in humidity. The system may not be able to cope with the condensation of a large volume of steam, which will lead to temporary frost formation.
Diagnostics of defrost system faults
If you notice that the refrigerator Beko has stopped freezing, but the compressor is running continuously, there may be a malfunction in the defrost cycle. Ice could completely block the evaporator, and cold air simply does not enter the chamber. This condition is often called an “air lock” of ice.
In such situations, the defrost sensor is often to blame. It could be stuck or give incorrect readings, causing the heating element to not turn on on time. Ice builds up, blocks the channels, and the cooling efficiency drops to zero, although the compressor is technically in good working order.
For accurate diagnostics, it is necessary to check the resistance of the heating element and the integrity of the sensors using a multimeter. However, for the average user, a more accessible method is visual inspection and complete defrosting.
| Symptom | Probable cause | Action |
|---|---|---|
| The refrigerator hums, but does not cool | Frost evaporator, fan does not work | Full defrost 24 hours |
| Ice only on the door | Poor fit of the seal | Replacement or washing of the seal |
| Water on the floor under the refrigerator | Drainage is clogged or the tray is full | Cleaning the drainage hole |
| Alarm light is constantly on | Temperature sensor malfunction | Call a technician to replace the sensor |
It is worth remembering that the electronics of the refrigerator can produce errors, which are indicated by blinking indicators. The decoding of error codes depends on the specific model Beko, so always check the instructions.
☑️ Do-it-yourself primary diagnostics
Operation rules for long service life
To system No Frost in your refrigerator Beko worked flawlessly for years, you must follow simple but important rules. The main thing is not to overload the camera with products. Air should circulate freely between the shelves and at the back wall.
If you tightly fill the refrigerator with bags to the very top, blocking the outlet openings of the air ducts, circulation will be disrupted. This will lead to local overheating of the compressor and uneven cooling of the products. The optimal filling of the chamber should not exceed 70% of the total volume to ensure proper operation of the fan.
It is also important to monitor the temperature of the products that you place inside. Hot pots are the number one enemy of any refrigeration system. They create a powerful upward flow of moist air, which instantly condenses on cold elements.
- 🥦 Packaging: Be sure to cover liquid products and dishes with a strong odor with a lid or film.
- 🧊 Frozen: Use the "Super Freeze" mode only when loading a large volume of fresh food, turning it off after 24 hours.
- 🧹 Cleanliness: Wash the internal surfaces regularly to prevent grease and dirt from clogging the ventilation ducts.
Following these recommendations will avoid premature wear of the motor and system defrost. Remember that repairing modern electronics can cost a significant part of the price of a new device.
Is it necessary to defrost a Beko refrigerator
Question about the need for defrosting refrigerators Beko with the No Frost system causes a lot of controversy. Technically, they do not require complete manual defrosting, since the moisture is removed automatically. However, manufacturers recommend carrying out preventive defrosting at least once a year.
Why is this necessary? Over the course of a year, bacteria, mold spores and odors can accumulate inside the system, which cannot be removed by regular wet cleaning. In addition, in hard-to-reach places of the drainage system, a biofilm can form, which over time will lead to blockage.
During preventive defrosting, it is necessary to unplug the device, open the doors and leave it for 12–24 hours. This will allow any ice that may have accumulated in the hidden cavities of the evaporator to completely melt and exit through the drain.
⚠️ Attention: Do not use hair dryers, scrapers or hot water to speed up defrosting. A sudden temperature change can damage the plastic and evaporator tubes, which will lead to freon leakage.
After defrosting, thoroughly wipe all surfaces with a dry cloth and let the refrigerator stand with the doors open for another hour to ventilate. Only after this can you turn it on to the network and load it with products.
The myth of complete autonomy
Many people think that No Frost means “never touch it at all.” This is wrong. Any technique requires hygiene. If you ignore cleaning, the smell of old grease or spilled soup will be absorbed into the plastic parts and ventilation, and it will be extremely difficult to remove it later.
Frequently asked questions (FAQ)
Why does the Beko refrigerator make loud noises when operating?
The No Frost system uses a fan to circulate air. The noise may be caused by the fan blades touching frozen ice (defrosting is required) or wear of the motor bearing. Also, sound may occur when the compressor is running or refrigerant flows.
Is it possible to disable the No Frost function?
No, in refrigerators Beko this function is a design feature and does not have a shutdown button. It operates automatically according to the algorithms specified in the electronic control module.
How often should the air filter be changed?
In models with the Fresh Zone function or similar air filtration systems, it is recommended to replace the carbon filter once every 6-12 months, depending on the intensity of use. The replacement indicator (if any) will tell you when the filter has reached the end of its life.
What to do if the back wall in the refrigerator compartment is wet?
In Full No Frost refrigerators, the back wall should not be wet. If this happens, the air supply damper may be open too much, or the seal of the chamber may be compromised. In models with a combined system (No Frost in the freezer, drip in the refrigerator), moisture on the back wall of the refrigerator compartment is the norm.
Does the No Frost system affect the freezing speed?
Yes, thanks to the active circulation of cold air, freezing occurs faster and more evenly than in static systems. However, in order not to overload the compressor, you should not load more than 2-3 kg of fresh food at a time.