The modern household appliances market is filled with complex abbreviations and marketing names that often confuse the buyer. One of these terms is Cool Plus, which can be found in the description of refrigerators of the German brand Liebherr. Many users mistakenly believe that this is the name of an entire series or a separate model, but in fact we are talking about a specific air flow distribution system.
Understanding exactly how your household appliance functions directly affects the shelf life of products and energy consumption. Unlike classical systems, the technology Cool Plus offers a unique approach to cooling, combining the advantages of static cooling and forced circulation. This allows you to avoid over-drying of products, maintaining their natural moisture.
In this article we will analyze in detail what is hidden behind this name, how to properly operate equipment with such a system and why it is considered one of the most gentle for food. You will find out how it differs from the usual No Frost and what nuances of care exist.
The principle of operation of the Cool Plus system
The technology Cool Plus is an improved version of the static cooling system, which is often called “crying” or drip. It is based on natural convection: cold air, being heavier than warm air, sinks down, and warm air rises. However, engineers Liebherr added an important control element for this process.
The key difference is the presence of a special fan, which does not work constantly, but only when necessary to equalize the temperature in different zones of the chamber. This prevents temperature gradients from forming, where food could freeze near the back wall or spoil at the door due to heat. The system is automatically activated if sensors detect a deviation from the specified parameters.
⚠️ Attention: The fan in the Cool Plus system turns on briefly and runs very quietly. If you hear periodic light noise, this is not a malfunction, but normal operation of the temperature equalization system.
It is important to note that in such refrigerators there is no powerful air flow blowing directly onto the food. This creates a milder microclimate. Humidity the chamber remains at a high level, which is critical for storing vegetables, fruits and herbs, which often wither faster in No Frost systems.
Differences from No Frost systems and static cooling
To understand value Cool Plus, it is necessary to compare it with two other common types of cooling. Classic static requires manual defrosting, as moisture settles on the back wall and turns into ice. The system No Frost completely eliminates the formation of ice due to the constant circulation of dry air, but often dries out the products.
Liebherr Cool Plus occupies an intermediate, but very comfortable position. It, like No Frost, prevents the formation of a “snow coat” in the refrigerator compartment, but does it in a more delicate way. In this case, a full-fledged one is usually used in the freezer, which eliminates the need for the user to defrost the freezer manually. No Frost, which eliminates the need for the user to defrost the freezer manually.
Below is a comparative table to help you understand the nuances:
| Characteristics | Statics (Drip) | No Frost | Cool Plus (Liebherr) |
|---|---|---|---|
| Ice formation | Requires defrosting | Does not form | Does not form in the refrigerator compartment |
| Humidity | High | Low (dry air) | Optimal (natural) |
| Temperature distribution | Uneven | Uniform | Uniform with correction |
| Care | Periodic defrosting | Minimal | Minimal |
This combination of technologies allows you to achieve a balance between ease of use and maintaining the quality of products. For those who value the freshness of vegetables, this parameter often becomes decisive when choosing.
Advantages of technology for food storage
The main trump card of the system Cool Plus is the creation of ideal conditions for products sensitive to dehydration. Unlike aggressive blowing in systems No Frost, here the air moves smoothly. This means that the lettuce leaves will not wilt after two days, and the cheese will not become covered with a hard crust.
In addition, the system contributes to more efficient use of space. Since the temperature is equalized throughout the chamber, you can place food not only on the lower shelves (where it is colder in conventional refrigerators), but also distribute it more evenly. This simplifies sorting and access to the contents.
- 🥬 Preservation of vitamins: High humidity prevents oxidation and withering of plant fiber.
- 🥩 Protection of meat products: The absence of direct air flow prevents the surface of meat or fish from becoming airy.
- 🍰 Versatility: You can store open products on the shelves without fear that they will dry out or become saturated with foreign odors faster than usual.
The secret of long-term storage of greens
For maximum effect, use Liebherr refrigerators special BioFresh containers (if the model supports them) in conjunction with the Cool Plus system. This extends the shelf life of fresh herbs up to 3 times.
Temperature settings and controls
Control of a refrigerator with technology Cool Plus is usually carried out through an electronic control panel located on the door or inside the chamber. The accuracy of the setting allows you to set the temperature in 1-degree increments, which is important for different types of products.
For the refrigerator compartment, the optimal value is considered to be a range from +3 to +5 degrees Celsius. At this temperature, bacteria multiply more slowly and food does not freeze. If you have loaded a lot of warm products after the store, you can activate the mode SuperCool, which will enhance the system for several hours.
Recommended setup sequence:1. Press the "Fridge" or "Cold chamber" button.
2. Use the "+" or "-" arrows to select a value.
3. Confirm your selection (or wait 5 seconds for automatic saving).
Therefore, frequently changing settings or opening the door for a long time can upset this balance, causing the appliance to work harder.
Refrigerator care and prevention
Despite the automation of processes, maintenance of the refrigerator Liebherr with the system Cool Plus is still required. The main attention should be paid to the cleanliness of the drainage hole through which condensate is removed. Its clogging is the most common reason for the appearance of water at the bottom of the chamber.
Regular washing of internal surfaces is necessary not only for hygiene, but also for the efficient operation of the sensors. Dirt and grease can distort the readings of temperature sensors, causing the system to operate incorrectly. Use mild detergents that do not contain abrasives.
⚠️ Attention: It is strictly forbidden to use sharp objects to clean the back wall or drainage channel. Damage to the evaporator or cooling system tubes will lead to expensive repairs and loss of gas.
It is recommended to check the door seals every six months. If they do not fit tightly, warm, humid air will enter the chamber, which will increase the load on the system Cool Plus and lead to increased formation of condensation.
☑️ Refrigerator care checklist
Typical questions and troubleshooting
Users often wonder why a little moisture still appears on the back wall in the refrigerator compartment. In the system Cool Plus this is a normal physical process: moisture condenses, turns into droplets and flows into the drain. If the water does not drain, most likely the hole is clogged.
Another common question concerns noise. As mentioned earlier, the periodic hum is the operation of the temperature equalization fan. However, if the sound becomes loud, squealing, or constant, this may indicate a problem with the fan or compressor.
If you notice that food begins to freeze at standard settings (+4°C), the temperature sensor may be broken or the ventilation holes inside the chamber may be blocked. Make sure that there is a small gap between the food and the back wall for air circulation.
Conclusion
Technology Cool Plus in refrigerators Liebherr is a successful engineering solution that combines the reliability of static cooling with the comfort of modern systems. It is ideal for those who want to minimize the maintenance of equipment, but at the same time keep food as fresh and juicy as possible.
Understanding the principles of operation of your refrigerator allows you to use its capabilities 100%. Correct temperature settings, timely cleaning and knowledge of the system's features will help the equipment serve for many years without breakdowns.
When choosing between different systems, you should consider your priorities: if the most important thing for you is the absence of ice at any cost, No Frost will do, but if you value the natural moisture of products, Cool Plus will be an excellent choice.
Is it necessary to defrost the Liebherr Cool Plus refrigerator?
The refrigerator compartment does not need to be defrosted; moisture is removed automatically through drainage. The freezer (if there is No Frost) also does not need to be defrosted. Complete defrosting is only needed once every year or two for hygienic washing.
Why do drops form on the back wall?
This is the normal operating process of the Cool Plus system. Moisture from the air condenses on the cold rear wall, collects in drops and flows into the drainage hole, evaporating in the pan above the compressor.
What to do if water flows onto the floor?
Most likely, the drainage hole is clogged. It is necessary to carefully clean it with a special flexible brush or soft wire, and also check whether the drain groove is displaced.
Is it possible to turn off the Cool Plus fan?
In most models, this function is not provided for the user, since it is built into the controller’s operating algorithm. Forced shutdown is possible only with service intervention, which is not recommended.