Owners of modern refrigeration units often notice a button on the control panel with the inscription Freeze or an image of a snowflake, but not everyone fully understands the principle of its operation. The function quick freezing in LG technology is designed to intensively reduce the temperature in the freezer in a short period of time. This allows you to preserve the structure of the fibers of meat, fish or berries, preventing the formation of large ice crystals that destroy the cells of the product.
Activation of this mode switches the refrigerator compressor to maximum performance mode, ignoring standard rest cycles.
Unlike conventional cooling, the goal here is not to maintain stable climate, but in the fastest possible passage of the freezing point of the water contained in the products. This approach is critical for preserving the taste and vitamin composition of the fresh food that you have just placed inside.
Many users mistakenly believe that this mode is only needed for fresh food, but it is also effective when reloading the chamber.
If you have added warm packages or simply opened the door for a long time, turning on intensive cooling will help quickly restore the disturbed temperature balance throughout the entire volume freezer compartment.
The operating principle of intensive cooling
The operating technology of the mode Super Freeze or Fast Freeze in LG refrigerators is based on changing the compressor control algorithm. In normal mode, the inverter motor operates cyclically, turning on and off to maintain the set temperature, usually minus 18 degrees Celsius. When the fast freezing function is activated, the control system forcibly keeps the compressor turned on continuously.
This leads to the fact that the refrigerant circulates through the system without stopping, removing heat from the internal chamber as efficiently as possible.
The system fans No Frost also begin to work in an enhanced mode, providing active convection of cold air around the products. As a result, the temperature in the freezer can drop significantly below standard values, reaching minus 24 or even minus 30 degrees, depending on the specific refrigerator model.
⚠️ Attention: Prolonged operation of the compressor at maximum load mode leads to increased energy consumption. It is not recommended to keep the function turned on longer than the required time specified in the instructions.
It is important to understand that the temperature sensors at this moment continue to work, but their shutdown threshold is shifted.
The system will not allow the temperature to drop to critical values that could damage the unit itself, but will create extreme conditions for the contents of the chamber. That is why, after completing the freezing cycle, the refrigerator automatically returns to standard settings so as not to overfreeze already prepared stocks.
How to activate and deactivate the mode
Control of the intensive cooling function in LG refrigerators may differ depending on the series and year of manufacture of the model. Most modern electronically controlled units have a separate button or touch zone on the front panel of the display, designated as Freeze or Super Freeze. To activate the mode, you must press this button and hold it for 3 seconds until the indicator lights up or starts flashing.
In models with advanced functionality, such as the series LG DoorCooling+ or InstaView, control can be carried out through the touch panel on the door.
The display usually shows the corresponding snowflake icon or inscription confirming that the mode is running. If you use a “smart” refrigerator with Wi-Fi support, you can sometimes activate the function remotely through a mobile application LG ThinQ, which is extremely convenient if you forgot to turn on the freeze before going to the store.
☑️ Check before turning on the mode
Deactivation of the mode in most cases occurs automatically after a certain time, it usually takes from 18 to 24 hours.
However, the user can manually turn off the function earlier if the food is already frozen. To do this, simply press and hold the same button again Freeze until the indicator on the panel goes out. In some older models without a display, the switch may be mechanical and located inside the freezer.
Operating time and automatic shutdown
One of the key issues that concerns users is the duration of the mode quick freezing. In LG refrigerators, this parameter is strictly regulated by the controller software. The standard cycle of intensive compressor operation lasts approximately 24 hours, after which the system forcibly switches to the normal temperature maintenance mode.
This time interval was not chosen by chance: it is optimal for freezing a standard volume of fresh food to the depth required for long-term storage.
If you enabled the function manually, but the food frozen faster, there is no point in waiting a day - you can turn off the mode yourself, as described above. This will help save energy resources and reduce the load on the unit components.
What happens inside after 24 hours?
After the set time has expired, the controller resets the intensive cooling command. The compressor returns to normal operation, maintaining a temperature of about minus 18 degrees. If the products have not had time to freeze, they will begin to slowly warm up to the standard temperature of the freezer.
It is worth noting that the time of actual freezing of the product depends on its volume and initial temperature.
A small bag of berries can be ready in 3-4 hours, while a large piece of meat will require the entire allotted cycle. The table below shows approximate time intervals for various types of products when the function is activated.
| Product type | Loading volume (kg) | Time until completely frozen | Recommended mode |
|---|---|---|---|
| Berries and fruits | 1-2 kg | 3-5 hours | Quick freezing |
| Fish fillet | 2-3 kg | 6-8 hours | Quick freezing |
| Meat (pieces) | 3-5 kg | 12-18 hours | Quick freezing |
| Full load | 10+ kg | 24 hours | Quick freezing + additional loading |
Impact on food safety
Main purpose of use functions Fast Freeze is to minimize the negative impact of low temperatures on the structure of food. When cooled slowly, the water contained in the cells of meat, fish or vegetables turns into large, sharp ice crystals. These crystals literally rupture the cell membranes, which leads to the loss of juice, taste and nutrients during subsequent defrosting.
The fast freezing mode allows you to bypass this problem due to its speed.
The water in the cells freezes almost instantly, forming many tiny crystals that do not damage the tissue of the product. As a result, after defrosting, the steak remains juicy, and the strawberries retain their shape and do not turn into mush.
In addition, a rapid decrease in temperature suppresses the activity of enzymes and bacteria.
The faster the product passes through the so-called “crystallization zone,” the longer it will retain its original properties. For families who prepare semi-finished products or seasonal berries for the winter, the presence of such a function in an LG refrigerator is a significant advantage over models without this option.
Energy consumption and equipment load
Using maximum power mode inevitably affects energy consumption. When an LG refrigerator operates in Super Freezemode, its energy consumption can increase by 1.5–2 times compared to the normal cycle. The compressor works without rest breaks, which is a stressful situation for the mechanism, although modern inverter models Linear Inverter are designed taking into account such loads.
However, constant or too frequent use of this function unnecessarily can shorten the service life of the unit.
It is recommended to turn on intensive freezing only when loading fresh products. If the freezer compartment is already filled with ready-made supplies and you simply open the door to get ice, there is no point in activating this mode - the standard operating algorithm is quite enough to compensate for short-term heat.
⚠️ Attention: If you notice that the refrigerator hums louder than usual or vibrates strongly while operating in fast freezing mode, check the stability of the installation and the distance to the walls. Compressor vibration at high speeds can increase if installed incorrectly.
It is also important to monitor the cleanliness of the condenser and ventilation grilles.
During intensive operation, heat exchange should occur as efficiently as possible. If the radiator at the back of the refrigerator is clogged with dust or animal hair, the system may overheat, which will lead to an emergency shutdown or breakdown of the compressor.
Typical problems and their solution
Sometimes users are faced with a situation where the fast freezing mode does not turn on or, conversely, does not turn off. If the indicator on the panel flashes, but the function does not activate, this may indicate a malfunction of the temperature sensor or a malfunction in the electronic control module. First of all, try rebooting the refrigerator by unplugging it for 10-15 minutes.
In some cases, the problem lies in the freezer door not being tightly closed.
The security system blocks the activation of the intensive mode if the door opening sensor detects a leak in the circuit. Check if anything is preventing the door from closing tightly, and make sure that the sealing rubber is clean and elastic.
If the mode runs constantly and does not turn off automatically after 24 hours, this is a clear sign of a malfunction of the thermostat or a “sticking” relay on the control board.
In such a situation, the compressor can work for weeks, which is inevitable will lead to its combustion. If such symptoms are detected, you must contact an authorized service center to diagnose the electronics.
Why does the mode not turn on on some models?
In a number of budget models of LG refrigerators, the fast freezing function may be stated in marketing materials, but implemented in a simplified manner. It may not have a separate button, but is activated only under certain conditions, for example, when turned on for the first time after defrosting.
It is also worth considering that in very hot weather, the efficiency of freezing may decrease.
If the refrigerator is in the kitchen, where the air temperature exceeds 30 degrees, it will be more difficult for the system to remove heat, and the freezing time of products will increase even when activated mode Freeze.
Comparison with the normal storage mode
Understanding the difference between the standard mode and the quick freezing function helps to wisely manage the resources of the refrigerator. Normal mode is designed for storage already frozen products, maintaining a stable temperature with minimal fluctuations. In this state, the refrigerator consumes the least energy and operates most quietly.
Quick freezing mode is a tool for transition a product from the “warm” state to the “frozen” state.
Using it for permanent storage is impractical and even harmful, since excessively low temperatures can dry out products if they are not sealed and lead to the formation of excess frost on the evaporator.
Proper alternation of these modes allows you to extend the life of LG equipment and ensure the best quality of products on your table.
Remember that the technology was created for specific tasks, and its correct use is the key to long and trouble-free operation of your refrigeration equipment.
Is it possible to keep the fast freezing mode on all the time?
It is strictly not recommended. Constant operation at maximum power will lead to rapid wear of the compressor, increased noise and a significant increase in electricity bills. In addition, food can freeze and lose its quality.
Why does the refrigerator not shut down for a long time after turning off the mode?
After intensive work, the system takes time to stabilize the temperature and return to the normal cycle. The compressor may run for a while longer to compensate for the heat accumulated during the boost mode before going into standby mode.
Does the fast freeze mode affect the food in the refrigerator compartment?
In most LG models, the refrigerator and freezer compartments have independent cooling circuits or dampers. However, if the Freeze mode is used for a very long time, the temperature in the main chamber may decrease slightly, but usually it remains within safe values for vegetables and fruits.
What to do if the quick freezing indicator is on, but there is no cold?
This is a sign of a technical malfunction. The compressor may have failed, there is a refrigerant leak, or the sensor may be faulty. It is necessary to immediately disconnect the device from the network and call a technician for diagnostics in order to avoid spoilage of food and further damage to equipment.
Do you need to defrost the refrigerator before turning on fast freezing?
Modern LG refrigerators with the No Frost system do not require manual defrosting. However, if a thick layer of ice forms on the evaporator due to a malfunction, freezing efficiency will decrease. In normal maintenance mode, additional defrosting is not required before turning on the function.