Owners of modern appliances often wonder whether defrosting is necessary at all the freezer compartment of their unit, if there is an inscription on the front panel NoFrost. Despite manufacturers' assurances of complete automation of processes, even the most advanced systems require periodic human intervention to maintain ideal hygiene and energy efficiency.
Refrigerators Liebherr are famous for their reliability and complex engineering, but the accumulation of ice in hidden places or the appearance of an unpleasant odor signal the need for general cleaning. Ignoring these signs can lead to increased energy consumption and reduced compressor life.
In this article we will analyze the full service cycle of the freezer compartment, starting from preparation and ending with the first start after inactivity. You will learn why automation cannot cope with the entire volume of moisture and how to safely carry out the procedure without damaging sensitive electronics.
Does the NoFrost system in Liebherr need defrosting?
Many users mistakenly believe that technology NoFrost completely eliminates the need for manual defrosting. This is not entirely true: the system prevents the formation of a massive ice crust on food and walls, but does not completely remove moisture from the air.
Condensation formed when the door is opened settles in hard-to-reach places of the evaporator, which is hidden behind a plastic panel. Over time, this layer of ice thickens, impeding air circulation and causing the compressor to wear out. That is why manufacturers recommend carrying out preventive defrosting at least once a year.
In addition, complete defrosting is necessary for high-quality sanitization. Without turning off the power and removing all removable elements, it is impossible to effectively wash the internal surfaces and eliminate bacteria that can cause food spoilage.
- ❄️ Elimination of hidden ice on the evaporator, which is not visible to the eye.
- 🦠 Deep disinfection and removal of odors absorbed into the plastic.
- ⚡ Reducing energy consumption by restoring heat exchange.
- 🔧 Checking the condition of seals and hinges in an accessible state.
⚠️ Attention: If you notice that the refrigerator has started to work louder than usual or frost has appeared on the door, defrosting should be carried out immediately, without waiting for the planned period.
Preparation for the defrosting procedure
Before starting any manipulations with equipment, it is necessary to properly prepare the workplace and empty the chamber of its contents. Take care in advance about where frozen food will be stored, as the process can take from several hours to a day depending on the amount of ice.
Free up space in front of the refrigerator to ensure easy access to the back wall and bottom of the unit. You will need absorbent rags, basins for water, and perhaps a syringe to clean out the drainage holes.
It is important to unplug the device in advance to avoid the risk of electric shock when coming into contact with water. Do not try to speed up the defrosting process using a hair dryer or other heating devices, as sudden temperature changes can damage the plastic and cold-resistant seals.
- 📦 Prepare cooler bags or thermal containers for food.
- 🧹 Find soft sponges and a neutral detergent without abrasives.
- 🧣 Place old towels on the floor in front of the refrigerator to protect the coating.
☑️ Preparation checklist
After all preparatory steps are completed, you can begin mechanical cleaning and removal of removable structural elements.
Step-by-step the process of defrosting the chamber
The first step will be to completely free up the internal space. Carefully remove all drawers, shelves and baskets. In models Liebherr the guides may have specific latches, so act without sudden movements so as not to break the plastic latches.
Leave the freezer and refrigerator doors wide open. The natural process of melting ice will take time, usually 4 to 12 hours. It is forcibly prohibited to speed up this process in the operating instructions.
Water will flow down, so make sure that the drainage chute on the floor of the chamber is not clogged. If there is water inside, carefully collect it with a sponge or use a blower to pump out the liquid.
⚠️ Attention: It is strictly forbidden to use sharp objects (knives, screwdrivers) to chip ice. One careless movement can puncture the evaporator passages, leading to a freon leak and costly repairs.
While the ice is melting, wash all removed drawers and shelves with warm water and a mild detergent. Rinse them thoroughly and let them dry at room temperature.
What to do with water when defrosting?
If there is a lot of water, you can carefully tilt the refrigerator (but no more than 40 degrees and only 10 minutes after turning it off!) so that the water flows into the drainage hole at the back. However, it is better to use a syringe or rubber bulb to pump out water from the inside.
After the ice has completely melted, wipe the inner walls with a dry rag. Pay special attention to corners and joints where moisture could remain.
Cleaning the drainage system and evaporator
One of the most common reasons for the appearance of water on the floor or inside the chamber is a clogged drainage hole. In refrigerators Liebherr it is usually located on the back wall of the refrigerator compartment or at the bottom of the freezer.
To clean, use a special brush-brush, which is often included, or a regular soft wire wrapped in cotton wool. Carefully walk along the channel, removing accumulated dirt and mucus.
If you get to the open evaporator (in some models you need to remove the back plastic panel), inspect it for dust. Dust on the radiator fins significantly reduces the efficiency of heat transfer.
| Element | What to clean | Frequency |
|---|---|---|
| Drain hole | Brush, warm water | Every 6 months |
| Door seals | Wet wipe, soda | Once a month |
| Condenser (rear) | Vacuum cleaner, soft brush | Once a year |
| Internal walls | Special product or vinegar | At each defrost |
After cleaning, be sure to blow out the drainage with air or pour a small amount of clean water to make sure there is free flow.
Disinfection and removal of odors
After mechanical cleaning, the sanitation stage begins. The plastic inside the refrigerator has an antibacterial coating or similar technologies in different series, but this does not replace regular washing. Use specialized household appliances or a weak solution of baking soda (1 tablespoon per liter of water). Avoid aggressive chemicals, chlorine-containing substances and abrasive powders that can damage the surface. Liebherr has an antibacterial coating SmartSteel or similar technologies in different series, but this does not replace regular washing.
Use specialized household appliance products or a weak solution of baking soda (1 tablespoon per liter of water). Avoid aggressive chemicals, chlorine-containing substances and abrasive powders that can damage the surface.
To eliminate persistent unpleasant odors, you can wipe the walls with a solution of vinegar water or leave an open container with activated carbon inside for a day after washing.
Thoroughly wipe all surfaces dry. Residual moisture can cause repeated rapid formation of ice or mold immediately after switching on.
- 🍋 Lemon juice perfectly neutralizes the odors of fish or meat.
- ☕ Coffee grounds in an open plate work as a powerful sorbent.
- 🍞 Brown bread left on saucer also helps remove odor.
Make sure that all rubber seals on the doors are also treated and wiped dry, as dirt often accumulates in the folds.
Assembling and first launch of the refrigerator
When the chamber is completely dry and clean, return all shelves, drawers and baskets to their place. Make sure that they fit tightly and correctly, according to the markings inside the chamber.
Close the doors and turn on the refrigerator. In models Liebherr with electronic control, it may be necessary to activate the super freeze mode SuperFrost to quickly reach the temperature.
Do not load food immediately. Let the refrigerator run idle for at least 2-4 hours until it reaches operating temperature. Loading warm food will cause the compressor to work in extreme mode.
Check the operation of the indication on the display. If the warning icons are lit, give the equipment time (usually about an hour) for the system to update the sensor data.
⚠️ Attention: Specifications and location of controls may vary depending on the specific series Liebherr (for example, CBN, CNef, GN). Always check the original instructions for your model before activating special modes.
How long does it take to completely defrost a Liebherr?
On average, the process takes from 6 to 12 hours. The time depends on the thickness of the ice layer (if there was one), room temperature and humidity. Do not turn on the refrigerator while pieces of ice remain inside.
Can you use a hair dryer to speed things up?
Manufacturers categorically do not recommend using hair dryers, fan heaters or pots of boiling water. Sudden heating can deform the plastic case and damage the evaporator tubes, which will lead to refrigerant leakage.
Why does the refrigerator hum after defrosting?
If the humming appears immediately after turning on, this may be normal - the compressor is entering mode. If the noise does not subside after an hour or is accompanied by vibration, check whether the refrigerator is level and whether the tubes at the back are touching the wall or furniture.
Do the seals need to be lubricated?
Yes, after each defrosting and washing it is recommended to wipe the rubber door seals with silicone grease or glycerin. This will maintain their elasticity and prevent cracking, ensuring a tight fit.
What to do if the water does not go into the drainage?
It is necessary to re-clean the drainage hole with a brush or soft wire. If there is water in the tray inside, you need to scoop it out with a syringe or sponge. Clogged drainage is a common cause of puddles on the floor.