Modern refrigerators are no longer simple freezers for long-term storage of food supplies, turning into complex climate systems designed to preserve food freshness for as long as possible. One of the key technologies that is found in models of the mid-range and premium segments is the system Fresh Control or, as it is often called, the zero camera. Many owners of new equipment are faced with incomprehensible symbols on the control panel or a separate compartment inside the refrigerator compartment, not realizing their true purpose.
In this article we will look in detail at what it is Fresh Control, how it differs from conventional refrigeration and why storing meat or fish in this compartment extends their shelf life several times. Understanding the principles of operation of this zone will help you avoid spoilage of expensive products and use the capabilities of your refrigerator one hundred percent.
Using the correct temperature conditions is not just a whim of manufacturers, but a necessity dictated by the biochemical processes occurring in food products under different conditions. If you want the purchased steak to remain juicy after three days, and the greens not to turn into mucus by the evening, you need to understand the functionality of your unit.
The principle of operation of the freshness zone
Technology Fresh Control is based on the creation and maintenance of a specific microclimate, which is radically different on the conditions in the main chamber of the refrigerator. In a standard compartment, the temperature usually ranges from +3 to +5 degrees Celsius, which already slows down the growth of bacteria, but does not stop it completely. The freshness zone, or zero chamber, maintains a temperature close to 0 degrees, often with the possibility of precise adjustment within the range of -1 to +2 degrees.
The key difference is not only the temperature regime, but also the level of humidity. Depending on the type of product, the system can either humidify the air or, conversely, dehumidify it. For meat and fish products, low humidity is critical so that the surface does not become weathered, but also does not become covered with condensation, which is an ideal environment for bacteria. Vegetables and fruits, on the other hand, require high humidity to prevent wilting.
The control system often uses separate ventilation dampers and sensors that constantly monitor conditions inside the compartment. If you open the door, smart electronics quickly restore the set parameters, minimizing differences. This ensures stable conditions, which is impossible in a conventional chamber, where the temperature fluctuates every time it is opened.
⚠️ Warning: Do not try to store food in a zero-humidity zone that is not intended to be frozen, such as some types of tropical fruit or dairy products in open containers, as they may lose their properties or freeze at temperatures close to 0.
Operational efficiency Fresh Control directly depends on the tightness of the boxes and the serviceability of the condensate drainage system. If you notice that ice is constantly forming on the walls of the compartment or, conversely, there is water standing, this is a signal that the system is malfunctioning.
Main types of freshness zones
Refrigeration equipment manufacturers have developed several modifications of freshness zones, each of which is tailored for certain groups of products. Understanding the differences between them will allow you to properly distribute food supplies.
The first type is dry freshness zone. It is intended primarily for storing meat, fish, poultry and seafood. In this compartment the humidity is maintained at about 50%. Such conditions prevent food from becoming covered in mucus, but also do not dry them out as much as a freezer. Meat in such conditions can be stored for up to 3 days without loss of taste and the appearance of foreign odors.
The second type - wet fresh zone. Here the humidity level reaches 90% and above. This is an ideal place for vegetables, fruits, berries and herbs. High humidity prevents the evaporation of moisture from plant cells, so the salad remains crisp and the berries do not wrinkle. Often such areas are equipped with a special air circulation system to avoid the formation of mold.
- 🥩 Meat compartment: Temperature around 0°C, low humidity, ideal for raw meat and fish.
- 🥦 Vegetable compartment: Temperature +2...+4°C, high humidity, suitable for all types of plant products.
- 🍷 Universal compartment: Possibility of manual adjustment of humidity and temperature, suitable for cheeses, delicacies and drinks.
In some refrigerator models LG, Samsung or Bosch these zones can be combined into one large box with a partition or have a system for switching modes with one turn of the lever. This is very convenient, as it allows you to adapt the space to current needs, for example, before the holidays, when you need to lay a lot of meat.
How to set the temperature correctly
Setting Fresh Control is not a “once and for all” action. The settings may require adjustment depending on the refrigerator load, the time of year and the type of food you plan to store. Most modern models allow you to adjust the temperature with an accuracy of 0.5 or 1 degree.
To set the optimal mode, you must contact the control panel. Depending on the model, this may be a touch screen on the door or mechanical controls inside the chamber. Usually the setup is done through the menu Settings → Fresh Zone or a similar item. If you have an electronically controlled model, you may see indicators in the form of a snowflake (for meat) or a drop (for vegetables).
It is important to note that it takes time for the temperature to fully stabilize after changing the settings. Typically this process lasts from 2 to 4 hours. Therefore, you should not load the compartment with products immediately after switching the mode - let the system enter the operating cycle.
☑️ Setting the freshness zone
If you mainly store drinks and ready-made dishes that just need to be cooled, you can set the temperature higher, about +3...+4 degrees. This will reduce the energy consumption of the refrigerator. However, for raw animal products it is better to stick to values close to zero.
| Product type | Recommended temperature | Humidity | Shelf life |
|---|---|---|---|
| Fresh meat (beef, pork) | -1...0°C | Low (50%) | up to 3-4 days |
| Fish and seafood | -1...0°C | Low (50%) | 1-2 days |
| Vegetables (cabbage, carrots) | +2...+4°C | High (90%) | up to 2 weeks |
| Greens and salad | +1...+3°C | High (90%) | 3-5 days |
| Cheeses and delicacies | +2...+5°C | Average (70%) | up to 7 days |
Rules for storing food in the zero chamber
Even the most advanced system Fresh Control will not work effectively if the basic storage rules are violated. Food should not be left open, especially meat and fish. Although the fresh zone suppresses the growth of bacteria, contact with the air of other products can lead to cross-contamination and the appearance of unpleasant odors.
Use airtight containers or special cling film. For meat, vacuum sealing is best - removing air from the packaging significantly extends shelf life, since fat oxidation occurs more slowly. If there is no vacuum sealer, simply wrap the product tightly with several layers of film.
Do not fill the compartment to capacity. Free space is required for proper air circulation. If you use Fresh Control for vegetables, make sure they are dry before adding. Excess water on the surface of vegetables can increase humidity above normal and cause rotting, even in a specially designated area.
Is it possible to freeze food in the Fresh Control zone?
No, the temperature in the zero chamber usually does not fall below -1°C, which is not enough for deep freezing. The products may only be slightly touched by frost, but the inside will remain soft. For long-term storage, use the freezer.
Special attention should be paid to strong-smelling products. Despite the insulation, the smell of fish or smoked meats can be absorbed into the plastic of the drawers and walls of the refrigerator. Use containers with a carbon filter or tightly closed containers.
Advantages of using Fresh Control technology
The main advantage of having such a zone is saving money and time. When buying products for future use, you can be sure that in a few days they will be suitable for consumption. This is especially true for working people who do not have the opportunity to visit the store every day.
In addition, the preservation of vitamins and microelements in vegetables and fruits is much better. In a conventional chamber at +5 degrees, the processes of destruction of vitamin C are more active than at +1 degree. For families with children, this is an important factor in a healthy diet.
- 🛡️ Safety: Reducing the risk of food poisoning by suppressing pathogenic microflora.
- 💰 Savings: Fewer spoiled products are thrown away, you can buy in large packages.
- 🍎 Quality: Products retain their taste, texture and appearance much longer.
It is also worth noting versatility. In the freshness zone you can store not only food, but also some types of cosmetics (creams, masks) that require cool storage but are not freezing. This frees up space in the main chamber for larger items.
Possible problems and solutions
Despite the reliability, the system Fresh Control may malfunction. The most common problem is the formation of ice on the back wall of the compartment or on the products. This may indicate that the temperature is set too low or that the humidity sensor is faulty. In this case, it is worth raising the temperature by 1-2 degrees and checking the tightness of the door.
Another common situation is that the food in the zero chamber begins to deteriorate faster than expected. The cause may be dirty ventilation openings. Dust and crumbs clog air circulation channels over time, disrupting heat transfer. Regular cleaning and defrosting (if the model is not completely No Frost) solve this problem.
⚠️ Attention: If you hear extraneous noise or hum coming from the freshness zone, this may indicate a malfunction of the fan or damper. In this case, self-repair may violate the warranty - it is better to contact a service center.
Sometimes users complain that the vegetables in the fresh drawer freeze. This happens if the drawer is located too close to the cold air duct. Try not to place food close to the back wall of the drawer or use special dividers.
Comparison with a conventional refrigerator compartment
Many people wonder: why pay more for model with Fresh Controlif you can just set the temperature in the entire refrigerator to a minimum? The answer lies in biochemistry. At a temperature of -1...0 degrees, which prevails in the zero chamber, ordinary products in the main chamber (milk, yoghurts, ready-made salads) can freeze or separate, losing their taste.
The freshness zone creates local conditions that are not available in the general volume. In a regular compartment, the humidity is uncontrollable and depends on what you put in there. B Fresh Control this parameter is adjusted artificially. It's like comparing storing things on a balcony in winter and in a special climatic cabinet.
In addition, in a regular cell, frequent opening of the door leads to temperature fluctuations. The freshness zone, especially if it is a separate sealed box, holds the cold better. This provides a more stable mode, which is critical for sensitive products.
Is it possible to store ready-made dishes in the zero chamber?
Yes, you can, but it is better to use airtight containers. Prepared foods, especially soups and sauces, can be stored at 0 degrees longer than at +4, but make sure they do not freeze completely if the temperature drops below zero.
Why does water sometimes appear in the freshness zone?
Water can appear due to high moisture content of the food (for example, you put freshly washed vegetables) or due to clogging drainage hole. Check to see if the drain is clogged and try to dry the food before storing it.
Does the fullness of the box affect the operation of Fresh Control?
Yes, it does. If the box is crowded, air cannot circulate and the temperature is unevenly distributed. It is recommended to fill the compartment no more than 70-80% for efficient operation of the system.
Is it necessary to defrost the freshness zone?
In refrigerators with the No Frost system, complete defrosting is not required. However, once every 3-6 months it is recommended to carry out preventive washing and drying of the chamber to remove odors and bacteria.
What temperature is considered optimal for storing cheese?
For most cheeses, the optimal temperature is considered to be from +2 to +6 degrees. In the Fresh Control zone, it is better to use a mode with a slightly higher temperature (if there is an adjustment) or store the cheese not in the coldest part of the box so that it does not lose its aroma and texture.