Owners of premium German equipment often wonder how often and how they need to be serviced equipment. Despite the fact that the brand Liebherr is famous for its advanced cooling systems, many users are still not sure about the need for manual intervention in the operation of the unit. This is due to the fact that the model range contains both fully automatic systems and hybrid solutions that require minimal human intervention.
An incorrect understanding of the principles of operation can lead to owners either ignoring the necessary maintenance procedures, or, conversely, carrying out unnecessary manipulations that are not required for specific models. It is important to understand that even the most modern equipment requires periodic monitoring of the condition of the evaporator and drainage system. In this article, we will analyze in detail the algorithm of actions for various types of refrigerators in order to extend the life of your device.
The main goal of any maintenance is to remove excess moisture and prevent the formation of an ice crust, which reduces the efficiency of heat transfer. If you notice that your refrigerator is getting louder or its energy consumption is increasing, it may be time for some maintenance. Let's determine what type your model is in order to choose the right strategy.
Determining the type of defrosting system
The first and most important step is to identify the cooling technology installed in your device. Modern models Liebherr are most often equipped with NoFrost or LowFrostsystems, which are radically different in operating principle from classic drip systems. If the documents or nameplate indicate the presence of NoFrost technology, this means that the main refrigeration compartment and freezer compartment do not require manual defrosting in the usual sense of the word.
However, there is a nuance that even experienced users often forget about. The NoFrost system automatically removes moisture from the air, but this does not relieve the owner from the need to maintain cleanliness inside the chambers. In models with the system LowFrost ice forms much more slowly than in older units, but periodically, approximately once every year or two, a complete shutdown may still be required for hygienic cleaning and removal of residual ice.
For classic models that use static cooling, the procedure remains standard: a complete shutdown, waiting for the ice to melt and removing the water. It is important not to confuse these concepts, since attempts to “defrost” the NoFrost system by leaving the door open for a day unnecessarily can lead to drying out of the seals and failure of the fans.
⚠️ Attention: Attempting to mechanically chip ice in models with the LowFrost or NoFrost system can lead to damage to the evaporator, which will result in costly repairs and loss guarantees.
Preparation for the defrosting procedure
If you determine that your model requires intervention, or you are carrying out routine hygienic cleaning, you need to properly prepare the unit. The first step is to empty the refrigerator and freezer compartments of food. It is better to transfer all perishable items (perishable products) to another cold place or use thermal containers with ice to avoid spoilage of supplies during the procedure.
Next, you need to disconnect the device from the power supply. To do this, remove the plug from the socket or, if access to the socket is difficult, use the off button, if provided by the design of a particular model Liebherr. Remember that simply turning off the light inside the chamber is not enough - the compressor and control system must be completely de-energized. This is critical to the safety and proper operation of the electronics once turned on.
Once turned off, open all doors and drawers. This will provide an influx of warm air and speed up the process of ice melting. To protect the floor from the water that inevitably forms during the process, it is recommended to lay old towels or absorbent rags around the refrigerator. Also prepare a container for collecting water if the design does not provide a special drain channel.
☑️ Preparing for defrosting
The process of removing ice and moisture
The safest method recommended by the manufacturer is natural melting. Leave the refrigerator with the doors open for several hours. The time required for complete defrosting depends on the thickness of the ice layer and the room temperature. This process usually takes from 4 to 10 hours. You should not rush things by using hair dryers or heating devices, as a sharp temperature change can negatively affect the plastic elements and pipe system.
During the melting process, the water will flow down. Some Liebherr models are equipped with a special condensate collection trough, which leads the water to the evaporator, where it subsequently evaporates. If there is no such system or it is clogged, the water will have to be removed manually using a sponge or syringe. Pay special attention to the corners of the chamber and the space under the drawers, where moisture can stagnate.
When all the ice has melted, you need to thoroughly wipe the internal surfaces. Use a soft cloth and special refrigerator cleaners or a weak soda solution. Abrasive materials and aggressive chemicals are prohibited from being used, as they can damage the antibacterial coating SmartSteel or the plastic liner of the cameras. After wet cleaning, be sure to wipe all surfaces dry.
Is it possible to speed up defrosting with a fan?
Using a regular room fan directed inside an open chamber is safe and can speed up the process by 30-40%. The main thing is not to use a heat gun or hair dryer with hot air, as this can deform the plastic.
Cleaning the drainage system
A common cause of water appearing on the floor or inside the refrigerator is a clogged drainage hole. It is located on the back wall of the refrigerator compartment and serves to drain condensate. During operation, crumbs, mold or mucus may accumulate there, blocking the flow of liquid. For cleaning, use a special flexible brush-brush, which is often included, or a soft wire wrapped in cloth.
Carefully insert the tool into the hole and make several rotational movements, being careful not to damage the canal walls. After mechanical cleaning, it is recommended to rinse the drainage with warm water. To do this, you can use a medical bulb or a syringe without a needle, pour in a small amount of water and watch how it goes into the compressor pan. If the water is standing, repeat the procedure.
Regular drainage cleaning is the key to the absence of unpleasant odors and excess moisture. In models with the system AutoFrost it is through this channel that the main part of the moisture is removed during defrost cycles. Ignoring this maintenance step can negate all defrosting efforts.
| Element | Check frequency | Tool | Purpose |
|---|---|---|---|
| Drain hole | Once every 3-4 months | Brush, pear | Removing blockages |
| Door seals | Once a month | Damp cloth | Cleaning from dirt |
| Rear grille | Once every 6 months | Vacuum cleaner, brush | Dust removal |
| Internal shelves | When defrosting | Soft sponge | Hygiene |
Care of seals and external elements
While the chambers are open and empty, the ideal time to care door seals. The tightness of the chamber and the efficiency of the compressor depend on their condition. Wipe the rubber cuffs with warm water and mild soap. Pay special attention to folds, where dirt and grease can accumulate, facilitating the growth of bacteria.
After drying, it is recommended to treat the seals with special silicone grease or talcum powder. This will maintain the elasticity of the rubber and prevent it from cracking and freezing in winter. If you notice that the door does not fit tightly, check the adjustment of the legs of the refrigerator - the device should be strictly horizontal or with a slight tilt back for automatic closing.
Do not forget about the outer part of the case. For stainless steel models SmartSteel, use special sprays that remove fingerprints and create a protective layer. For painted surfaces, a regular damp cloth will do. Avoid getting cleaning agents on the control panel to avoid damaging the display or touch buttons.
Completing the procedure and starting
After all surfaces have been washed and wiped dry, do not rush to immediately load the products. Reassemble the refrigerator in the reverse order: install shelves, drawers and containers. Make sure that all elements are in place correctly and that nothing is blocking the free movement of air. Now you can turn on the appliance.
Let the refrigerator run idle for at least 2-3 hours (for the freezer the time may be longer). During this time, the unit will reach the required temperature, and the automation will record a stable operating mode. Only after reaching the specified temperature parameters can food be added. Sudden loading with warm food will cause the compressor to overload.
Check the readings on the display or indicators. If you see error codes or warning signals, refer to your owner's manual. In modern models Liebherr electronics are very sensitive, and sometimes after a long shutdown you may need to reset the settings or confirm the transition to operating mode.
⚠️ Attention: Do not fill the refrigerator with food immediately after turning it on. The compressor needs time to reach operating mode, otherwise the temperature inside the chambers will rise, which is dangerous for the safety of food.
Frequently asked questions and troubleshooting
Even if all instructions are followed, situations may arise that confuse the user. For example, after defrosting, the refrigerator may not turn off for a long time - this is normal, since it must freeze a large volume of warm air that entered while the doors were open. However, if this period lasts more than a day, it is worth checking the tightness of the doors.
Another common question concerns the appearance of a puddle under the refrigerator immediately after turning it on. This may indicate that the drainage hole was not completely cleaned, or that the water receiving tray is overfilled (if it is structurally vented outside, which is rare). In most cases, the water in the tray under the compressor should evaporate naturally due to the heat of the operating unit.
If you own a model with the system VarioCooling or other advanced features, make sure that the air distribution dampers are not blocked by improperly installed shelves or products. Impaired air circulation can lead to local hypothermia and frost formation even in NoFrost systems.
Is it necessary to defrost a Liebherr refrigerator with NoFrost?
Models with the full NoFrost system do not require manual defrosting to remove ice, as this happens automatically. However, once every year or two it is recommended to carry out hygienic defrosting: turn off the device, wash the chambers and clean the drainage to remove dust and bacteria.
How long should the refrigerator defrost?
The time depends on the amount of ice and the temperature in the room. On average, the process takes from 4 to 10 hours. Do not use hot water or a hairdryer to speed it up, so as not to damage the plastic parts and evaporator tubes.
What to do if the refrigerator does not freeze after defrosting?
Make sure that enough time has passed for the temperature to rise (up to 6-8 hours). Check if the door is tightly closed. If the problem persists for more than a day, the sensor may have been damaged during cleaning or the contact has come loose - in this case, you will need to call a technician.
Can a Liebherr refrigerator be washed with water?
Yes, the internal chambers can be washed with water using mild detergents. The main thing is to avoid spraying water onto electrical components, lights and control panels. All surfaces must be thoroughly wiped dry before turning on.