The first acquaintance with new household appliances always evokes mixed feelings of joy and caution. Modern refrigerators of the German brand Liebherr series Comfort are complex climate systems that require the right approach to the first start-up. Many users make the mistake of believing that it is enough to simply insert the plug into the socket and wait for a miracle, but for the long life of the compressor and maintaining the quality of the products, it is critical to follow a certain sequence of actions.
The process of activating the equipment depends not only on the model, but also on the transportation conditions. If the unit was delivered horizontally, the oil in the compressor needs time to drain back into the crankcase, otherwise there is a high risk of water hammer. Even if the device was standing vertically, temperature acclimatization after winter delivery is a mandatory step, ignoring which can lead to thermostat failure or freon leakage in the first hours of operation.
In this article we will analyze in detail the switching algorithm, setting up the digital display and activating special modes, such as SuperFrost. You will learn how to correctly set the temperature zones for the refrigerator and freezer compartments so that food stays fresh for as long as possible. We will also discuss typical indicators on the control panel and how to interpret the device's readiness signals.
Preparing for the first start after delivery
Before connecting the device to the electrical outlet, it is necessary to conduct a thorough visual inspection and allow the equipment to settle. Shipping vibrations and tilts could dislodge internal components or oil in the cooling system. Service center specialists recommend waiting at least 2–4 hours if the refrigerator was transported vertically, and up to 12 hours if transported horizontally. This time is necessary for the refrigerant to stabilize.
The next step is to remove all shipping materials. Inside the chambers there may be fixing tapes, foam inserts or silica gel bags that must be removed. Pay special attention to the back wall: a protective film or cardboard covering the capacitor is often attached there. Disruption of heat exchange due to the packaging left behind will lead to overheating of the motor and increased energy consumption.
⚠️ Attention: Do not use sharp objects to remove stickers from the body, so as not to damage the enamel or pipelines of the NoFrost system located under the casing.
After cleaning, the insides of the chambers should be wiped with a damp cloth using a weak solution soda or a special plastic care product. This will remove the factory smell and dust accumulated during storage in the warehouse. After cleaning, the doors should be left open for 1-2 hours for complete airing and drying.
Installation rules and placement requirements
Correct operation refrigerator Liebherr directly depends on the quality of ventilation. The series units are Comfort equipped with efficient, but space-consuming heat removal systems. When installing, it is necessary to maintain minimum gaps between the rear wall of the appliance and the wall of the room - usually at least 5–7 cm. Side gaps are also important for air circulation, especially if the refrigerator is built into a niche.
An important parameter is the evenness of the installation. An incorrect angle of inclination can result in the door not fitting tightly to the body or, conversely, slamming too sharply. Height adjustment is carried out by twisting or unscrewing the front support legs. To check, use a building level, placing it on the top panel.
- 📏 The distance to the rear wall should be at least 50 mm for free convection.
- ⚖️ The front legs must be unscrewed so that the body rises, ensuring the doors self-closing.
- 🌡️ Avoid placing near heat sources: radiators, stoves or in direct sunlight.
- 🔌 The outlet should be in close proximity to avoid using an extension cord, which could cause a fire.
It is not recommended to install equipment in unheated rooms, such as a garage or balcony, unless otherwise stated in the instructions for a specific model. The operating temperature range of the climate class indicated on the nameplate must be strictly observed. Working outside of these limits will lead to an incorrect cycle of turning on the compressor and spoilage of food.
Sequence of connecting to the power supply
When the preparatory stages are completed, you can move on to the most crucial moment - the power supply. The plug should be inserted into the socket firmly, all the way, making sure that the contact is reliable. Models Liebherr Comfort often use a child lock system, so after turning on, you may need to unlock the control panel.
Immediately after connecting to the network, the device does not begin active freezing. The system diagnostic test is run, all indicators on the display light up, and the compressor is activated. During the first 6–10 hours of operation, the refrigerator will gain idle temperature. It is strictly not recommended to load products during this period, as this will create an excessive heat load.
Sequence of actions:
1. Plug the plug into a 220V socket.2. Wait for the sound signal (if any).
3. Check if the display lights up.
4. Wait 2 hours before loading the first batch of products.
In some modifications with the system SmartDeviceBox immediately after switching on, the Wi-Fi network connection indicator may light up. If you plan to control the refrigerator remotely, it is at this stage that you should download the application Liebherr HomeConnect and pair it. However, basic functionality is available without the Internet.
☑️ Check before loading products
Setting the temperature mode and display
Climate control in refrigerators Liebherr series Comfort is carried out through an electronic panel located on the door or inside the chamber. The basic factory setting is usually +5°C for the refrigerator compartment and -18°C for the freezer compartment. These values are optical for most products, but can be changed by the user depending on the load.
To change the settings, you must press the appropriate button on the control panel (often indicated by a thermometer symbol). The digital value will begin to flash, indicating that it is ready to enter new data. Use the “+” and “-” buttons to set the required value. After you stop pressing the buttons after a few seconds, the settings are saved automatically.
| Product group | Recommended zone | Optimal temperature | Shelf life |
|---|---|---|---|
| Fresh meat, fish | BioFresh (zero zone) | 0...+2°C | up to 3 days |
| Dairy products | Middle shelf | +2...+4°C | up to 5 days |
| Vegetables and fruits | Bottom drawer | +4...+7°C | up to 10 days |
| Frozen berries | Freezer | -18°C and below | up to 12 months. |
It is important to understand the difference between storage zones. The system DuoCooling or TwinAir in some models allows you to independently regulate the climate in different chambers, preventing food from drying out and mixing odors. If you are loading a large quantity of fresh food, it makes sense to temporarily lower the temperature, but remember to reset the settings.
Activation of the SuperFrost and SuperCool modes
For rapid cooling of a large batch of products or freezing of fresh products in refrigerators Liebherr special intensive operation modes are provided. The mode SuperFrost is intended for the freezer. When activated, the compressor operates continuously, lowering the temperature to minimum values, which allows the formation of small ice crystals inside the products, maintaining their structure.
Mode SuperCool works similarly for the refrigerator compartment. It is useful when you have brought a lot of food from the store at room temperature and want to quickly cool it down without raising the overall temperature inside the chamber. Typically, these functions work automatically for 65 hours, after which the refrigerator returns to the user-specified settings.
- ❄️ SuperFrost: activated by a button with a snowflake, the indicator lights up constantly during operation.
- 🧊 SuperCool: activated by a separate button, speeds up the cooling of new products.
- ⏱️ Automatic shutdown occurs after 2-3 days, but you can turn off the mode manually.
- 🔋 Using these modes temporarily increases energy consumption.
⚠️ Attention: Long-term forced operation of the compressor in SuperFrost mode unnecessarily leads to accelerated wear of parts. Use the function only when the camera is fully loaded.
To enable these functions, find the corresponding keys on the control panel. Touchscreen models may require a long press (3 seconds) to activate. Visual confirmation is the illuminated LED indicator next to the mode name or the corresponding symbol on the display.
What will happen if you do not turn off SuperFrost manually?
In most modern Liebherr models, the mode will turn off automatically after 65 hours. However, if the function does not have auto-shutdown (in older models), the compressor will wear out, which can lead to freezing of the evaporator and breakdown.
Diagnostics: indicators and possible errors
Modern technology is equipped with an advanced self-diagnosis system. If, after turning on, you notice flashing lights or hear repeated beeps, this is not always a reason to panic. Often, in this way, the refrigerator reports an increase in the temperature inside the chambers, which is normal in the first hours of operation after switching on.
The “Alarm” indicator (often a red triangle or exclamation mark) lights up if the temperature in the chamber is higher than safe. This is acceptable during the first 2–4 hours of operation. If the signal does not disappear after 6 hours, it is necessary to check the tightness of the doors and the tightness of the seals. Also, the reason may be loading a large amount of warm food.
There are also more specific error codes that can be displayed on the display in the form of alphanumeric combinations (for example, F1, E2). They indicate faulty sensors, fan problems or control board defects. In such cases, self-repair is not recommended, since special diagnostic equipment is required.
Why does the refrigerator hum immediately after turning on?
New compressors can be louder than older models. In addition, the sound may come from the refrigerant circulating through the pipes (gurgling) or from the NoFrost fan. If the sound does not sound like knocking or grinding, this is normal.
Frequently asked questions (FAQ)
How long after turning on can you load food?
The optimal waiting time is 2-4 hours for the main temperature set. However, to completely stabilize the climate and achieve the set parameters in all corners of the chamber, it is recommended to wait 10–12 hours before fully loading, especially if you plan to use the fast freezing mode.
Do you need to defrost the Liebherr Comfort refrigerator before turning it on for the first time?
No, new refrigerators of the Comfort s series system NoFrost or LowFrost do not require defrosting before the first start. There may be only a small amount of moisture inside the cameras from factory tests, which can be simply wiped off with a dry cloth.
What to do if the display does not light up after switching on?
First of all, check the presence of voltage in the socket and the tightness of the plug. If there is power but the screen is not active, the power saving feature or control panel Lock may be turned on. Try pressing and holding the unlock button (usually indicated with a key) for 3-5 seconds.
Can a Liebherr refrigerator be connected to the network via an extension cord?
The manufacturer does not recommend using extension cords and tees. Direct connection to a fixed grounded socket guarantees stable operation of the compressor and safety. Long cables can heat up and cause a voltage drop, which is harmful to the electronics of the refrigerator.