German technology Liebherr is famous for its reliability and accuracy of maintaining the climate inside the chambers, however, for the equipment to operate effectively, the user must independently set the correct parameters. Correct temperature setting is not just a matter of comfort, but also a key factor influencing food safety, energy consumption and compressor durability. Many owners encounter difficulties during the initial setup or after defrosting, not knowing how to interpret the readings on the display or the position of the mechanical regulator.
In this article we will analyze in detail the algorithms of actions for various types of control, from classic mechanical rotary switches to modern touch panels SmartSteel and SmartTouch. You will learn why it is important not to overload the chambers during setup and how to avoid common mistakes that can lead to food spoilage or the formation of excessive ice.
Before taking active steps, it is worth understanding that a refrigerator is an inertial system. Changing the settings does not immediately change the indoor air temperature; the system needs time to stabilize heat transfer processes. Therefore, after any intervention in the operation of the control electronics or mechanics, it is necessary to wait a certain period before drawing conclusions about the effectiveness of the adjustment.
Features of temperature conditions in different types of refrigerators
All refrigeration units Liebherr are divided into two large groups according to the type of control: electronic and mechanical. In models with electronic control the temperature is set with an accuracy of a degree, and often up to tenths, which provides ideal conditions for storage. Mechanical models rely on thermostats, where adjustment is made approximately by changing the contact force.
Electronic systems, such as EasyFresh or BioFresh, allow you to independently control the climate in the refrigerator and freezer compartments. This makes it possible to freeze large volumes of food without the risk of defrosting existing stocks. In mechanical devices, changing the compressor power affects both chambers simultaneously, which requires a more careful approach to setting, especially in the hot season.
⚠️ Attention: In models with a mechanical regulator (usually inside the chamber), the numbers on the scale do not indicate degrees Celsius. Unit “1” is the minimum cooling, and the maximum number (usually 5, 6 or 7) is the maximum compressor power.
Modern two-compressor models allow you to create different microclimatic zones. For example, the zone BioFresh maintains a temperature close to 0°C and high humidity, which is ideal for vegetables and meat. Adjusting the main chamber should not interfere with the settings of these special compartments, since separate dampers and sensors are responsible for them.
Setting the temperature in refrigerators with a display
If your Liebherr is equipped with an external or internal display, the setting process is simplified and visualized as much as possible. The control panel is usually located on the door or inside the top of the refrigerator compartment. To enter the setting mode, you often need to briefly press the corresponding button, indicated by the thermometer symbol or the name of the camera.
After activating the editing mode, the current temperature value will begin to flash on the screen. Using the plus and minus buttons (or touch arrows) you can change the indicator. The optimal temperature for the main chamber is considered to be from +3°C to +5°C. For the freezer, the standard value is -18°C.
It is important not to confuse the temperature setting mode with the mode for activating special functions. Some models require you to hold the button for 3-5 seconds to go to the settings menu, while a short press only displays the current settings. If you accidentally change the value, do not rush to close the door - just return the indicator to its original position until confirmation.
It is worth noting that in models with a system NoFrost or FrostSafe temperature sensors can be located at different points in the chamber for more accurate averaging of readings. Therefore, the value on the display may differ slightly from the actual temperature in a particular corner of the shelf, especially immediately after loading warm products.
Adjustment in models with a mechanical thermostat
In classic models without a digital display, adjustment is carried out using a rotary switch, which is most often located inside the refrigerator compartment on the side wall or under the ceiling. The scale of such a regulator can be numbered from 1 to 5, from 1 to 7, or have the designations “Min” and “Max”. There is a direct relationship here: the higher the number, the colder it will be inside.
To set the recommended mode of +4°C, the regulator is usually moved to the middle position. If there are 7 divisions on the scale, this will be position 3 or 4. If you notice that the products in the depths of the chamber begin to freeze, and an ice crust forms on the back wall, you should reduce the power by turning the knob towards lower values.
☑️ Checking the mechanical settings
The opposite situation, when the refrigerator is too warm, requires an increase in power. However, you should not immediately turn the knob to the maximum. It is better to add one division at a time and wait 12-24 hours for the temperature to stabilize. A sudden change in load on a mechanical thermostat can lead to premature wear or sticking of the contacts.
⚠️ Attention: Never try to forcibly turn the mechanical thermostat knob if it is stuck. This may cause the shaft to break. Gently move it to release the mechanism.
Remember that mechanical thermostats are sensitive to ambient temperature. In winter, when the apartment is cool, the refrigerator may work less often, and you will have to increase the power. In summer, on the contrary, the power needs to be reduced so that the compressor does not work without stopping.
Special modes: SuperCool, SuperFrost and Eco
Modern refrigerators Liebherr are equipped with accelerated cooling functions that temporarily change the standard operating algorithm of the compressor. Mode SuperCool (Super cooling) is designed to quickly reduce the temperature in the refrigerator compartment after loading a large amount of food. In this mode, the compressor operates continuously until the temperature reaches the set minimum, or for 6 hours, after which the function turns off automatically.
Mode SuperFrost (Super Freeze) is similar to the previous one, but is activated for the freezer compartment. It allows you to quickly freeze fresh food, preventing the formation of large ice crystals that destroy the structure of the food. This mode is also useful if you want to “freeze” the cold in advance before a power outage or a long absence.
Eco mode (Eco) is designed for maximum energy savings. In this mode, the temperature in the refrigerator compartment rises to +7°C, and in the freezer to -15°C (or -18°C depending on the model). These are acceptable values for storing most products, but they are not suitable for long-term storage of meat or fish.
Is it possible to keep the SuperCool mode on all the time?
No, this is not recommended. Constant operation of the compressor at maximum power will lead to increased energy consumption, increased noise and accelerated engine wear. Use this mode only when necessary.
Activation of these modes is usually done with a separate button on the control panel. The indicator lights up to confirm that it has been turned on.
Table of optimal temperatures for storing food
Correctly setting up the refrigerator is impossible without understanding what conditions are required for different groups of products. There is no one-size-fits-all value for all foods, so it's important to know the average optimal values so you can customize your appliances to suit your main food mix.
Below is a table to help you navigate your storage requirements. Please note that the zone BioFresh in refrigerators Liebherr is specially created for products from the first two rows of the table, providing them with the best conditions.
| Product type | Optimal temperature | Shelf life (approximate) | Recommended zone |
|---|---|---|---|
| Fresh meat, fish | from -2°C to 0°C | 2–3 days | BioFresh (Meat/Fish) |
| Vegetables, fruits, herbs | from 0°C to +4°C | up to 10 days | BioFresh (Vegetables/Fruits) |
| Dairy products, eggs | from +2°C to +6°C | 3–5 days | Middle shelves |
| Ready meals, sauces | from +3°C to +7°C | 2–4 days | Middle/Top shelves |
| Frozen food | below -18°C | up to 12 months | Freezer compartment |
Based on these data, it becomes clear why setting the temperature to +7°C (maximum in Eco mode) is acceptable for sauces, but is absolutely not suitable for fresh meat. If you often buy perishable products, keep the main chamber in the range of +3..+4°C.
Typical problems and their solutions when setting up
Sometimes users are faced with situations where seemingly correct settings do not give the expected result. One of the common problems is that the refrigerator does not maintain the temperature. This may not be due to a malfunction, but to improper operation. For example, if the door does not close tightly due to overcrowded shelves or dirty seals, the cold will evaporate faster than the compressor can generate it.
Another common situation is the formation of a “snow coat” or ice on the back wall, even with the thermostat set correctly. This often happens when hot food is placed in the compartment or the door is left open for too long. The moisture condenses and freezes. In such cases, it is necessary to defrost the unit (if not NoFrost) and check the tightness.
If the display blinks or shows an error (for example, F1, F2), this is a signal of a malfunction of the temperature sensors or control system. In this case, manual temperature adjustment will be ineffective, since the “brain” of the refrigerator receives incorrect data from the sensors.
⚠️ Attention: If, after defrosting and re-adjusting, the temperature does not stabilize within 24 hours, and the compressor runs continuously, there may be a refrigerant leak or a faulty thermostat. A call from a specialist is required.
It is also worth considering external factors. If the refrigerator is located next to a radiator, stove, or in direct sun, it will be extremely difficult for it to maintain a low temperature even at maximum power. In such conditions, adjusting the temperature becomes meaningless without changing the installation location of the equipment.
Frequently asked questions (FAQ)
Why does the Liebherr refrigerator make a loud sound after temperature adjustment?
This is normal. When the set temperature changes (especially when SuperCool or SuperFrost mode is turned on), the compressor begins to work at maximum load in order to quickly reach the new target value. Also, noise can be produced by refrigerant circulating through the system with greater intensity. After a few hours, when the temperature stabilizes, the sound should become quieter.
How to reset the temperature settings to factory settings?
Most electronic models Liebherr do not have one “Reset” button for temperature settings. You need to manually return the values to the recommended ones: +5°C for the refrigerator compartment and -18°C for the freezer. To reset all device settings (including clocks and alarms), you usually need to hold down the settings button or combination of buttons for 10-15 seconds, but it is better to find the exact instructions in the manual of your specific series.
Is it possible to transport a Liebherr refrigerator immediately after setting the temperature?
No, this is not recommended. After transportation (especially if it was horizontal), the refrigerator needs to stand in a vertical position for at least 2–4 hours (or better yet, a day) before turning it on. This is necessary so that the compressor oil flows back into the compressor crankcase. Turning it on immediately after transportation can lead to water hammer and breakdown of the compressor, no matter what temperature you set.
What to do if the freezer is -12°C, but you need -18°C?
First, check if the “Vacation” or “Eco” mode is turned on, which increases the temperature to save energy. If the modes are off, try increasing the freezing power. If the temperature does not drop during the day, check the tightness of the door and the amount of food (an empty freezer is more difficult to keep cold than a full one). If the problem persists, you may need to top up with freon or replace the seal.