Modern refrigerators have ceased to be just metal boxes with a constant low temperature, turning into complex climate systems for storing food. One of the most interesting and functional solutions in recent years has been the appearance in the lower part of the refrigerator compartment of a special compartment with adjustable parameters, which in the brand's technology was named LG got the name Flexi Use Box. Many owners of new household appliances, encountering this zone for the first time, wonder about its real purpose and advantages over standard shelves.
Essentially, this zone is a universal container located directly above the freezer, which can operate in several temperature modes depending on the user's needs. Unlike fixed zones, where the temperature is set by the manufacturer, Flexi Use Box allows you to independently choose whether this compartment will work as an additional freezer, an area for storing vegetables, meat, or even as a space for quickly cooling drinks. Understanding the operating principles of this module will help to significantly extend the shelf life of products and optimize the internal space of the unit.
In this material we will analyze in detail the technical features of this system, consider the available operating modes and give practical recommendations for operation. You will learn how to correctly configure the settings for specific types of products and what mistakes users most often make when setting up the refrigerator for the first time. Proper use of the capabilities of modern technology is not just following instructions, but a way to save the family budget by wasting food.
Design and principle of operation of the universal zone
The zone Flexi Use Box is structurally separated from the main volume of the refrigeration chamber, which allows it to maintain different temperature conditions from the general chamber. Inside this container there is its own temperature sensor and a separate channel for supplying cooled air from the compressor. It is this insulation that makes it possible to lower the temperature significantly below the standard +3...+5 degrees characteristic of the main chamber, or, conversely, to maintain a specific microclimate for fruit.
The modes are controlled through a panel on the front wall of the box itself or through a digital interface if the refrigerator model supports the function Smart ThinQ. When switching modes, the system automatically adjusts the intensity of the cold supply. For example, in Deep Freeze mode, the fan operates at maximum speed, ignoring standard defrost cycles of the main compartment, to ensure a rapid reduction in temperature to -20 degrees or below.
⚠️ Attention: When activating Deep Freeze mode in the Flexi Use Box area, the overall temperature in the main refrigerator compartment may briefly increase. It is not recommended to place products that are critical to temperature changes into the main volume immediately after turning on this mode.
It is important to understand that the efficiency of the zone directly depends on the tightness of the container lid and the absence of obstruction (obstacles) to air circulation inside the box itself. If you fill the container full of food, disrupting the internal air flow, the temperature sensor may read incorrect data, which will cause the compressor to malfunction. Therefore air circulation inside the module is a key factor in its proper operation.
Available temperature modes and their purpose
The main feature of the system is the variability of settings. The manufacturer has provided several preset scenarios, each of which is optimized for a specific type of storage. The user can switch between them depending on what products were purchased or planned for storage this week.
Let's consider the main modes in more detail so that you understand the physics of the processes occurring inside the container:
- 🥩 Meat & Fish: The temperature is maintained in the range of about -1...0°C. These are ideal conditions for storing fresh meat, poultry or fish that you plan to cook in the next 2-3 days. In such conditions, the meat does not freeze into stone, remaining soft for cutting, but bacteria practically do not multiply.
- 🍎 Fruit & Vegetable: The mode maintains a temperature of about +3°C and often includes a special humidification system or reduced air circulation to prevent dehydration of products. This prevents greens from wilting and keeps vegetables crisp.
- 🧊 Freezing (Freezer): Temperatures drop to -20°C and below. In fact, this compartment turns into an extension of the freezer. Ideal if you urgently need to freeze a large amount of berries in the summer or store meat supplies when the main freezer is full.
- 🍷 Cooling drinks (Soft Freezer / Drink): The temperature is set to approximately -3...-5°C. Bottled water does not turn into ice, but drinks become extremely cold, which is ideal for parties or hot summers.
Choosing the right mode affects not only safety, but also energy consumption. The freezing mode requires significantly more electricity than the vegetable storage mode. Therefore, there is no point in keeping the “Meat” mode on all year round if you only store a couple of packages of cheese or sauces there, for which standard refrigerator temperature is sufficient.
What can and cannot be stored in a Flexi Use Box
The versatility of the compartment often leads to confusion: users begin to put everything there without thinking about the compatibility of products. To avoid food spoilage, it is necessary to clearly separate product groups according to their temperature requirements.
The table below provides a summary of the recommended products for each operating mode:
| Operating mode | Temperature range | Recommended products | Shelf life (approx.) |
|---|---|---|---|
| Meat / Fish | -1°C... 0°C | Fresh beef, pork, fish fillet, minced meat | 2-4 days |
| Fruits / Vegetables | +2°C... +4°C | Greens, berries, lettuce, tomatoes | 5-10 days |
| Frozen | -18°C... -24°C | Dumplings, ice cream, frozen berries, long-term meat | 1-3 months |
| Refrigeration | -5°C... -1°C | Bottled drinks, chilled beer, ready meals | Until the date on the package |
It is strictly not recommended to store food in glass containers if they contain a lot of liquid. When water expands, the glass may burst, even if the temperature does not drop immediately. Also avoid storing foods that do not require refrigeration in this compartment, such as baked goods (unless frozen) or tropical fruits like bananas, which turn black at low temperatures. freezing products in glass containers if they contain a lot of liquid. When water expands, the glass may burst, even if the temperature does not drop immediately. Also avoid storing foods in this compartment that do not require refrigeration, such as baked goods (unless frozen) or tropical fruits such as bananas, which turn black at low temperatures.
Another important point is packaging. For the "Meat and Fish" mode, it is better to use vacuum bags or tightly closed containers. This will prevent the product from drying out and mixing odors. In the "Vegetables" mode, on the contrary, complete sealing can be harmful if the box does not have a humidity control system, so it is better to store some vegetables in special perforated bags.
☑️ Check before loading products
Energy efficiency and impact on compressor operation
The use of an additional cooling zone inevitably affects the operation of the compressor. When you activate the mode Flexi Use Box, especially the freezing mode, the refrigerator begins to work more intensively. Modern inverter compressors such as Linear Inverter, cope with this task smoothly, increasing power without sudden voltage surges, but electricity consumption still increases.
It is worth noting that the deepest freezing mode is the most energy-consuming. If you use it constantly as an additional freezer, energy consumption can increase by 15-20% compared to standard refrigerator operation. At the same time, storage modes for vegetables or meat at a temperature of about 0 degrees practically do not increase the load on the system, since the temperature difference with the main chamber is minimal.
To optimize the operation of the device, it is recommended:
- ❄️ Do not set the freezing mode “on an ongoing basis” unless there is an urgent need for it. Use it as a course, for example, immediately after purchasing a large volume of products.
- 🌡️ Monitor the room temperature. If the refrigerator is in the kitchen, where the air temperature is above +30°C, it will be more difficult for the system to maintain low temperatures in the box, which will lead to an increase in the operating time of the compressor.
- 🚪 Minimize the time you open the main compartment door and box lid. Every time you open the Flexi Zone, you let in warm, moist air, which costs energy to cool.
⚠️ Attention: If you notice that the refrigerator starts to run continuously without turning off, check to see if the Flexi Use Box Zone is set to Freeze mode by accident. Also, the reason may be that the lid of this compartment is not tightly closed.
Care, cleaning and maintenance of the module
Hygiene inside the refrigerator is the key to the health of the whole family. The zone Flexi Use Box requires special attention when cleaning, since products that are prone to rapid growth of bacteria (meat, fish) or secrete juice (berries, defrosted foods) are often stored there.
To clean the internal container, you must first defrost it if the freezing mode was turned on, or simply remove all the products. The plastic tray is usually removable, making the cleaning process easier. It can be taken out and washed under running water using a mild detergent. Use abrasive powders and hard brushes is strictly prohibitedas they will leave micro-scratches in which bacteria and mold will subsequently accumulate.
After washing, be sure to wipe the surface dry with a soft cloth. The moisture inside a closed box is an ideal environment for fungus to develop. It is also worth regularly checking the drainage hole (if it is provided by the design in the rear wall of the niche), through which condensate is drained. If it becomes clogged with crumbs or ice, a puddle may form inside, which will lead to spoilage of food and the appearance of an unpleasant odor.
How to eliminate an unpleasant odor in the Flexi Use Box?
If a persistent smell of fish or meat appears in the box, wash it with a solution of baking soda (1 tablespoon per liter of water). After this, wipe with a vinegar solution (weak) to disinfect. Activated carbon tablets or special soda for the refrigerator, left in an open container inside the box for 24 hours, perfectly absorb odors.
Frequent problems and ways to solve them
During operation, users may encounter a number of typical situations that are not a breakdown, but only a feature of the system. Understanding these nuances will help you avoid panic and unnecessary calls to the technician.
One of the common complaints is the formation of frost or ice on the walls of the box or on the products, even in cooling mode. This may occur if foods with a high moisture content are stored in open containers in the cabinet. Water evaporates and condenses on the cold walls, freezing. The solution is simple: use lids. Ice can also form if the container lid is not tightly closed, when warm air from the main chamber constantly gets inside.
Another problem is noise. In Active Freeze mode, the fan may be louder than usual. This is normal for intensive cooling. However, if the noise is accompanied by vibration or knocking, check to see if any packaging is touching the sides of the box or lid. Vibration from a running fan is transmitted to loose objects, creating a resonating sound.
If you notice that the food in the "Meat" mode is still freezing, try raising the temperature slightly in the settings (if the model allows fine adjustment) or move the food away from the back wall and air duct, where the temperature is always below the average volume.
Is it possible to turn off the Flexi Use Box zone completely?
It is impossible to completely turn off the cold supply to this zone, since it is part of a single cooling system. However, you can set the temperature close to the temperature of the main chamber (for example, +3...+5°C), and then functionally it will differ from the rest of the volume only by the presence of a lid and a separate shelf. Some models have an "Off" mode for the fast freezing function, but basic cooling will remain.
Why do greens still wilt in the "Vegetables" mode?
The "Vegetables" mode in the Flexi Use Box primarily regulates the temperature, but does not always create ideal humidity, as in specialized vegetable boxes with hydrozones. If your greens are wilting, try wrapping them in a damp (but not wet) paper towel or using airtight containers for greens to keep the moisture inside.
Does keeping the box full affect your energy consumption?
Yes, it does, but not as much as many people think. The empty side cools faster, but it holds the temperature worse when opened. A completely clogged side requires more energy for the initial cooling of products, but then it works more stable, since the products themselves act as cold accumulators. The optimal filling capacity is about 70-80% of the volume.
What to do if the box lid does not close tightly?
Check whether anything is interfering with the seal around the perimeter of the lid (a crumb, a piece of packaging). If the seal is deformed, try gently straightening it with your fingers or warming it with a hairdryer (not hot air, but warm air) to restore elasticity. If the lid is lopsided due to heavy contents, redistributing the food may solve the problem.
Can baby food be stored in the Flexi freeze mode?
Yes, you can, but only in freezer-safe containers. Glass jars containing baby food may burst if the liquid inside freezes. It is better to use special forms for freezing or plastic containers marked “suitable for freezing.” Before feeding, be sure to defrost food to room temperature.