German brand refrigeration equipment Liebherr
famous for its reliability and well-thought-out system NoFrost, however, even such perfect units require periodic maintenance. Many owners mistakenly believe that the presence of an automatic defrost system completely eliminates the need for manual intervention, but this is not entirely true. In two-chamber models, a combination is often found where the freezer compartment is equipped NoFrost, and the refrigeration compartment operates using a drip system or requires manual defrosting once a year for hygiene.Ice accumulation, even minimal, can disrupt the tightness of the door and cause the compressor works to wear out. Defrosting a Liebherr refrigerator is not just removing ice, but a comprehensive cleaning procedure that allows you to extend the life of the equipment. Correctly performed actions will help to avoid unpleasant odors and the growth of bacteria inside the chamber.
In this article we will analyze in detail the algorithm of actions that will protect your device and maintain its functionality for many years. You will learn what tools you will need, what you absolutely cannot do, and how often you need to carry out this procedure for different types of chambers.
Preparing for defrosting: important steps
Before you begin active actions, you need to properly prepare the workspace and the unit itself. Disconnect the device from the power supply by unplugging the plug from the socket, or turn the temperature regulator to the Off/0position. This is a critical step, as any manipulation of internal live components is prohibited.
Free the chambers from food. If it's winter outside, you can take perishable foods to the balcony, but make sure that the temperature is not extremely low for some types of food. During the warm season, prepare cooler bags or thermal bags with ice to keep supplies fresh.
Take care of drainage of melt water in advance. It is better to cover the floor where the equipment is installed with absorbent rags or place flat containers to collect liquid. Two-chamber models Liebherr may contain a significant amount of moisture, especially if the drainage hole has been partially clogged.
⚠️ Warning: Do not try to speed up the defrosting process by placing bowls of boiling water inside the chamber or using a hair dryer. Sudden changes in temperature can lead to deformation of the plastic elements and damage to the evaporator.
Prepare soft sponges, mild detergent and clean towels. Aggressive chemicals, abrasive powders and hard brushes are prohibited, as they can scratch the internal coating SmartSteel or plastic.
Algorithm for defrosting the refrigerator compartment
In most two-chamber models Liebherr
The refrigerator compartment is equipped with a drip defrosting system (AutoFrost). Water flows down the back wall into a groove and evaporates. However, once every 6-12 months it is recommended to completely defrost for disinfection. After turning off the power, leave the door open for at least 10-12 hours.While the defrosting process is in progress, remove all removable elements: shelves, drawers, egg containers and bottle holders. They should be washed separately in warm water with a mild detergent. Rinse thoroughly and wipe dry before reinstalling.
When the ice has completely melted, wipe the interior surfaces with a damp cloth. Pay special attention to door seals - this is where dirt and mold most often accumulate. Wash the folds of the seal carefully, without stretching the rubber.
⚠️ Attention: If you find cracks or damage on the internal plastic or evaporator, do not try to seal them yourself before turning on the device. Contact your service center.
Be sure to check the drainage hole located at the bottom of the rear wall of the refrigerator compartment. It must be free of debris. For cleaning, you can use a special flexible brush included in the kit, or a soft cotton swab.
☑️ Preparation checklist
Features of defrosting the NoFrost freezer
Freezers Liebherr with technology NoFrost are structurally protected from the formation of ice on products and walls, but an ice “coat” can build up on the hidden evaporator behind the plastic panel. This happens if the door seal is broken or access to the chamber is often opened. Once a year, such a chamber also needs to be defrosted.
The process is similar to defrosting the refrigerator compartment: completely turn off and wait. Do not use sharp objects (knives, screwdrivers) to chip ice! Damage to the evaporator tubes will lead to a refrigerant leak and costly repairs.
After defrosting, dry the chamber thoroughly. In systems NoFrost
it is important that the air circulation channels are free. Check the ventilation holes inside the compartment and on the back panel - they should not be clogged with ice chips or food.If your model is equipped with the SmartFrost system, which reduces the formation of ice, but does not eliminate it completely, the defrosting procedure is required if the layer of frost is more than 5 mm. Ignoring this rule will lead to an increase in energy consumption.
What will happen if you do not defrost NoFrost?
Even in NoFrost systems, an ice cocoon will form around the evaporator over time. This impairs heat transfer, the compressor runs longer, and the fan may become noisy or jam.
Table: Comparison of Liebherr defrosting systems
Understanding the type of system you have will help determine the correct maintenance intervals. Below are the main characteristics of various technologies used in two-chamber refrigerators.
System type
Defrosting frequency
Availability of ice
Energy efficiency
Manual (Manual)
As needed (2-3 mm of ice)
Abundant on all walls
Average
AutoFrost (Drip)
1 time per year (for hygiene)
Only on back wall (temporary)
High
NoFrost
1 time per year (prevention)
Absent from products
Very high
SmartFrost
1 time every 1-2 years
Minimal, easily removed
High
As can be seen from the table, even modern systems require attention. A complete lack of defrosting for 3-5 years can lead to to failure of the defrosting heating element or timer. Regular maintenance saves money on repairs.
Cleaning and disinfection after defrosting
After the ice has melted and the water has been removed, the deep cleaning stage begins. Use a baking soda solution (1 tablespoon per liter of water) or special refrigerator care products. They effectively remove odors and greasy deposits.
Wipe all surfaces, including the ceiling and floor of the chamber. Don't forget the external parts: doors, handles, and the condenser grille at the back (if it's open). Dust on the condenser impairs cooling, so carefully vacuum it or wipe it with a dry cloth.
To eliminate unpleasant odors, you can use activated carbon or special odor absorbers that are placed on a shelf. Natural absorbents, such as black bread or a slice of lemon, also work effectively, but they need to be changed more often.
⚠️ Attention: When cleaning external stainless steel surfaces, use only special polishes for stainless steel, moving along the grain of the metal to avoid streaks.
Starting the refrigerator and checking operation
After cleaning and drying thoroughly, reassemble the refrigerator in the reverse order. Install shelves, drawers and containers. Make sure that all elements are securely in place and do not block air flow.
Plug in the device. Let it run empty for 2-4 hours to reach operating temperature. Only then load the products. Suddenly loading warm food into an empty, cold refrigerator will increase the load on the compressor.
Check the operation of the alarm system. If your model Liebherr
there is a temperature indication or an open door sound signal, make sure that they are functioning correctly. During normal operation, the indicators should go out or return to normal mode after a few hours.
In modern models with electronic control (TouchControl), you may need to reset the settings or confirm the operating mode after a long shutdown. Refer to the user manual for your specific series.
Frequently asked questions (FAQ)
Is it possible to defrost a Liebherr refrigerator without turning it off? sockets?
Absolutely not. Defrosting is only possible when the power supply is completely turned off. Operating the compressor during defrosting will lead to its breakdown, and the presence of water and electricity is dangerous to life.
How long does it take to completely defrost a two-chamber refrigerator?
Depending on the amount of ice and the temperature in the room, the process takes from 10 to 24 hours. Do not speed up the process with heating devices, this can damage the plastic and seals.
What to do if the refrigerator does not freeze after defrosting?
Perhaps the refrigerant has not yet been distributed throughout the system or the protection has tripped. Wait 4-6 hours of operation. If the problem persists, check that the door is tightly closed and that the ventilation holes are not clogged.
Does the refrigerator need to be washed with the NoFrost system?
Yes, it is necessary to wash it. NoFrost prevents ice from forming but does not protect against dust, crumbs, spills or bacteria. It is recommended to carry out hygienic cleaning once every 6-12 months.