Modern refrigerators Bosch are complex engineering systems, where the freezer control is often integrated into a single panel with the refrigerator compartment. Many owners are faced with bewilderment: the unit hums, the light inside comes on, but the cold does not increase, or the indicators blink. Understanding the logic of the electronics Siemens and Bosch is the key to quickly activating deep freezing.
In most cases, there is no separate “On/Off” button specifically for the freezer, since the compressor operates on the entire circuit. However, there are nuances of activation intensive freezing modes and resetting errors that block operation. If you have just connected a new device or defrosted an old one, the algorithm of actions will differ from the usual temperature setting
The first thing you need to do is check the physical connection and initial startup. Make sure that the plug is firmly seated in the socket and that the power supply voltage is stable. Once connected to the network, the electronics perform a self-diagnosis, which may take several minutes. Only after this process is completed, full control through the panel becomes possible Control Panel.
Initial startup and activation after transportation
If the question “how to turn on the freezer on a Bosch refrigerator” arose immediately after delivering the device home, you should not rush to connect to the power supply. Compressor oil that may have leaked into the evaporator circuit when the equipment is tilted must drain back into the engine crankcase. For models with conventional refrigerant, a standstill time of about 2-4 hours is required, and for inverter systems with R600a gas, the time can be reduced, but it is not worth the risk.
After waiting the time interval, connect the device. The control panel will light up, but the compressor may not start immediately. The system electronic control first counts the sensor readings. At this time, the display may show the current (warm) temperatures inside the chambers. This is normal behavior and does not indicate a breakdown.
For models with mechanical control (temperature regulator inside the chamber), the process is even simpler: just turn the knob from the “0” or “Off” position to the operating range. Typically these are values from 2 to 4 or the “Eco” marking. In electronic models, activation occurs automatically unless special blocking settings are set.
⚠️ Attention: It is strictly forbidden to load food into the freezer during the first 12-24 hours of operation of an empty refrigerator. The thermal load from defrosted products can lead to overload of the compressor and failure of the system NoFrost at the stage of initial entry into mode.
Make sure that the doors are tightly closed and the seals are not kinked. A loose door fit is a common reason why the freezer “does not see” the cooling command and runs idle.
Setting the temperature via the control panel
The main way to control the cold in modern models BoschMaxx, Classixx or KGN is touch or keypad on the outside of the door. Here the user sets a target temperature, and the refrigerator's brain decides when to turn on the compressor. For the freezer, the optimal value is considered -18°C.
To change the settings, find the button with a snowflake image or caption Freezer, Temp. Pressing this button will activate the editing mode: the corresponding digital indicator will start flashing. Using the arrow buttons + and - (or Up/Down), set the required value.
In some modifications with a display TouchControl control is carried out by touch. Tap the freezer symbol, wait for the beep or light to change, then select a degree. Once selected, the value will stop flashing after a few seconds, confirming that the setting has been saved.
- 🌡️ The standard temperature for long-term storage is
-18°Cand below. - ❄️ Mode
-24°Cis used for quick freezing of fresh products. - 🔋 Economy mode
-15°Cis suitable for storing already frozen stocks when the door is rarely opened.
It is important to understand the difference between the actual temperature inside and the set one. If you have just set -18°C, the compressor will operate continuously until the sensors detect that this level has been reached. This can take from 4 to 12 hours depending on the load and room temperature.
Using the SuperFrost function
Function SuperFrost (or Super) is a special mode that forcibly turns on the compressor to operate in a continuous cycle to quickly reduce temperature. This is the most direct answer to the question of how to “turn on” the cold as efficiently as possible. Activating this mode is necessary when loading a large amount of fresh food that needs to be frozen quickly in order to preserve their structure and vitamins.
To turn it on, find the button with the inscription Super or the snowflake symbol with an asterisk. When activated, the corresponding indicator lights up. In this state, the refrigerator ignores the current temperature and drives the compressor to the limit. In older models, this mode must be turned off manually after 24-50 hours, in new ones Bosch with the system SmartCool it turns off automatically.
Using SuperFrost significantly increases energy consumption. Do not keep this mode turned on constantly unless necessary, as this leads to the formation of excessive ice (in LowFrost systems) and wear of components.
In models without a display, the mode operation indication can be represented by a lit LED next to the button. If the indicator is flashing, this may indicate that the temperature has not yet reached the set value, or that there is a malfunction in the heat removal system.
Features of models with mechanical control
In simpler or older models of refrigerators Bosch control can be carried out by a mechanical thermostat. It is usually located inside the refrigerator compartment, but affects the operation of the entire circuit, including the freezer. The regulator is a round knob with numbers from 0 to 7 or Min/Max.
Position “0” means that the power to the compressor is turned off - the refrigerator is turned off. Any other position turns on the unit. The rule here is: the higher the number, the lower the temperature (the stronger the cold). For normal operation of the freezer, it is recommended to set the knob to value 3 or 4.
If you turn the knob to the maximum (6-7), the freezer will operate in constant freezing mode, which can lead to freezing of food in the refrigerator compartment and freezing of the back wall. In such models there is no precise digital indication of degrees, so control is carried out visually and according to the condition of the products.
A common problem with mechanical thermostats is “sticking” of the contacts or loss of sensitivity of the capillary tube. If the knob turns too easily without characteristic clicks, the thermostat may need to be replaced.
Diagnostics and reset of panel errors
Sometimes the freezer does not turn on or does not hold the temperature due to a failure in the electronic module. Situations of power surges in the network can lead to the “brains” of the refrigerator going into protective mode or displaying incorrect data. In this case, a soft reset is required.
The easiest way is to turn off the power to the device. Unplug the plug from the socket or turn off the circuit breaker in the panel. Leave the refrigerator alone for 10-15 minutes. This time is necessary for the capacitors on the control board to completely discharge and reset temporary errors. After turning on, the system will reboot as a computer.
If all segments on the display are lit or the temperature indicators are flashing (“A” or “F” flashing quickly), this is an alarm. It means that the temperature in the chamber is higher than normal. After rebooting and closing the door, the signal should disappear after a few hours of operation. If the blinking continues for more than a day, diagnostics of the sensors is required.
⚠️ Attention: If, after resetting the errors and checking the power supply, the compressor is silent, but a quiet click of the relay is heard, and the refrigerator is warm, the start relay or the compressor itself may have burned out. Further attempts to turn on may be dangerous.
In difficult cases, when the control panel is locked (the lock icon is on), you must hold down the lock button (usually a key or inscription Lock) for 3-5 seconds until the sound signal sounds. This unlocks the buttons for entering settings.
Table of fault codes and indicators
Understanding the control panel signals helps you quickly determine why your freezer is not working. Below is the decoded indications for most models Bosch with electronic control.
| Indicator / Symbol | Meaning | User action |
|---|---|---|
| Flashing temperature | Temperature is higher than normal (defrost or failure) | Check the door tightly, wait 12 hours |
| Lighting "Super" | Super freezing mode active | Turn off after 24 hour (if there is no auto shutdown) |
| Lock icon | Panel lock (Child Lock) | Hold the lock button for 5 seconds |
| Flashing "E" + number | Sensor or system error | Reboot, if it happens again, call a technician |
| Green indicator | Normal operation / Eco mode | No intervention required |
The presence of an error code does not always mean a breakdown. Often this is simply a recording of the fact of defrosting. However, ignoring persistent errors can lead to damage to products.
Frequent problems when turned on and their solutions
Even a working refrigerator can behave strangely when first turned on or after a long period of inactivity. Let's consider typical scenarios when it seems that the freezer does not turn on.
Situation one: the refrigerator hums, but does not freeze. If this happens in the first hours, this is normal. If 6 hours have passed and the chamber is warm, check whether the capillary tube or sensor is pressed against the wall during installation. Also, the cause could be a freon leak, but this requires the intervention of a technician.
Situation two: the freezer is working, but does not turn off. Check the tightness of the seal. If warm air enters the chamber, the system will try to compensate for the heat by constantly operating. Also check if the mode is set by SuperFrost accidentally.
- 🔌 Checking the network: Make sure that the socket is working and there is voltage.
- 🚪 Door: The tilt of the refrigerator should be slightly back so that the door closes itself under the weight.
- 🧊 Ice: A thick layer of ice on the evaporator (in NoFrost systems) blocks air circulation.
If you notice that the back wall of the freezer is covered with a “coat” of ice, and the food in the depths is warm, it means air circulation is disrupted. In systems NoFrost the fan is responsible for this. If it does not spin (froze or burnt out), the cold does not enter the chamber.
☑️ Check before calling a technician
Prevention and proper care of the freezer
For the question “how to turn on the freezer camera" did not occur too often, it is important to use the equipment correctly. Regular defrosting (for models LowFrost or drip type) prolongs the life of the compressor. In systems NoFrost it is enough to wash the chamber 1-2 times a year.
Do not allow the formation of a thick ice crust. Ice acts as a heat insulator, causing the sensors to “think” that there is no cold and load the motor. In models Bosch with technology LowFrost ice forms more slowly, but still requires attention.
⚠️ Attention: When cleaning the freezer, it is prohibited to use sharp objects (knives, screwdrivers) to chip ice. A puncture of the evaporator will lead to an immediate release of refrigerant and expensive repairs, which are often not economically feasible.
Use only soft rags and warm water. Chemical aggressive agents can damage the plastic and rubber seals, which will lead to depressurization.
Why can’t you wash the refrigerator with hot water?
Using boiling water or very hot water can lead to deformation of the plastic elements of the inner chamber and damage to the evaporator tubes that are close to the walls.
FAQ: Often asked questions
How long should a new Bosch refrigerator take to reach temperature?
Completely reaching the mode -18°C in the freezer compartment of an empty refrigerator takes from 4 to 12 hours. The time depends on the room temperature and compressor model. The chamber should be loaded with products only after reaching the set temperature.
What to do if the temperature indicator is flashing?
A flashing indicator means that the temperature in the chamber is above the set norm. This is normal immediately after switching on, defrosting or loading warm food. If the blinking does not stop after 24 hours of operation, check that the door is tightly closed or call a technician.
Is it possible to transport a Bosch refrigerator lying down?
Transporting lying down is not recommended, but is possible subject to strict rules: tilt angle no more than 40 degrees, transportation only on the back wall (never on the front or side!), and mandatory settling in front turning on for at least 4-6 hours.
How to turn off the open door sound signal?
On most models, the sound can be temporarily turned off by pressing any button on the control panel. To prevent the signal from repeating, it is necessary to close the door tightly. In some models, the sound warning function can be turned off in the menu settings.
Why does the freezer work, but does not freeze food?
Possible reasons: refrigerant leak, compressor malfunction, capillary tube clogged, or temperature sensor malfunction. If the compressor works, but there is no cold, most likely there is a problem in the freon circulation system.