Modern refrigeration units units of the German brand Bosch are famous for their energy efficiency and thoughtful ergonomics, however, in certain situations, users need to change the standard operating mode of the device. Often there is a need to completely or partially suspend the operation of the freezer compartment, for example, during a long absence, switching to storing only chilled products, or during defrosting of the system NoFrost. Understanding the principles of temperature control will allow you to optimize energy consumption and extend the life of the compressor.
It is important to immediately note that in most two-chamber models cannot be physically disabled the freezer compartment, leaving the refrigeration compartment running, since the refrigerant circulates through a single circuit or is controlled by a common compressor. However, you can increase the temperature in your freezer as high as possible until it stops freezing food, effectively turning it into an additional refrigerated cabinet. In some specific series with technology VarioZone or individual valves, the functionality may differ, but the basic principle remains the same for the entire line.
Further actions will depend on the type of control of your device: electronic display or mechanical regulators. Owners of s electronic display devices are luckier, since they can set precise temperature values, while mechanical models require rougher settings. Below we will analyze in detail the algorithms of actions for various interfaces and models.
Principles of operation of the Bosch cooling system
To competently manage the modes, you need to understand the basic physics of the process. In classic two-chamber refrigerators Bosch the cold is generated in the freezer compartment, and then the air is distributed into the refrigeration compartment through special channels or dampers. The compressor operates until the temperature sensor in one of the compartments (most often in the freezer) registers that the specified minimum has been reached. That is why independent shutdown one circuit without loss of cold in the other is technically difficult to implement in budget and mid-range models.
The situation changes if you own a model with a system MultiAirflow or two compressors, although the latter are found in Bosch less often than competitors. In such units, each compartment may have its own evaporator or control zone. When the temperature in the freezer rises to +5...+8°C, the compressor will still turn on periodically to maintain coldness in the main chamber, if it is active. Therefore, the term “disconnect” here rather means “transfer to minimum load mode.”
⚠️ Attention: Attempts to physically clamp the tubes or disconnect temperature sensors without the appropriate qualifications can lead to depressurization of the system and loss of warranty. Use only software settings methods.
The electronic control board reads the temperature sensors and regulates the compressor operating time. When you set the maximum temperature on the display, you instruct the controller to turn on the unit less often. This is the safest way to “turn off” freezing. In models with mechanics, everything depends on the position of the thermostat, which opens the compressor power circuit when a certain temperature inside the chamber is reached.
Setting up electronic models with a display
Owners of refrigerators of series Maxx, Classixx or VitaFresh with a digital display have the most flexible control options. The interface allows you to set the temperature with an accuracy of a degree. To minimize the freezing effect, you need to find the freezer control button (usually indicated by a snowflake or freezer) and set it to the maximum possible value. In most cases, the upper limit is -15°C or -18°C, but in some modes you can raise the temperature to -6°C or even higher if the model supports the function Holiday Mode (Vacation Mode).
To activate the minimum consumption mode or “turn off” the freezer, a key combination is often used. For example, holding the button for a long time Frost or SuperFrost can switch operating modes. If your model has a function EcoMode, it also limits the operation of the compressor, but does not turn off freezing completely. It is important to distinguish between these concepts: SuperFrost intensifies cooling, and we need the opposite effect.
Consider a typical sequence of actions for models with a touch panel on the door:
- 🔹 Press the display on/off button if it is in sleep mode.
- 🔹 Find a button with a freezer icon (often labeled as
Freezeror has an image of three snowflakes). - 🔹 Press this button cyclically until the indicator shows the maximum temperature (for example -15°C or the symbol
--if full is available deactivation). - 🔹 Confirm the selection if the system requires confirmation after 5-10 seconds of inactivity.
Some advanced models allow you to activate the "Freezer off" function through the settings menu (Settings). In this case, the corresponding icon of a crossed out snowflake may appear on the screen. However, remember that in this case, the food in the freezer will begin to defrost, and if the door of the main compartment is opened frequently, heat can penetrate into the adjacent compartment, accelerating the deterioration of the contents.
Adjustment of mechanical thermostats
In refrigerators Bosch without an electronic display, control is carried out using a mechanical thermostat, which is usually located inside the refrigerator compartment on the side wall or on the ceiling. This device is a rotary switch with a scale from 1 to 5 (or from Min to Max). It’s paradoxical, but to “turn off” the freezer in such models, you often have to do the opposite, adjusting the general operating mode.
Since a mechanical sensor most often controls the temperature in the refrigerator compartment, moving it to the position Min or 1 will lead to the compressor turning on less often. As a result, the temperature throughout the entire volume, including the freezer, will increase. If the regulator is located inside the freezer chamber (which happens in older or specific models), then turning it counterclockwise until it stops in the zone Off or 0 will completely stop the cooling.
| Position of the regulator | Operating mode | Temperature in the freezer (approximately) | Impact on the compressor |
|---|---|---|---|
| Max / 5 | Intensive freezing | -24°C and below | Continuous operation |
| 3-4 (Normal) | Standard mode | -18°C | Cyclic operation |
| 1-2 (Min) | Economy mode | -6°C... -10°C | Rare switching on |
| 0 / Off | Off | +20°C (defrost) | Not working |
If your thermostat has position 0 or Off, this means complete shutdown of the refrigeration unit. In this state, neither the freezer nor the main chamber will work. This is the only way to completely “turn off” a mechanical freezer, but it will leave you without a refrigerator as a whole. For partial effect, leave the regulator at minimum.
☑️ Checking the mechanical settings
Using the Holiday Mode
One of the most effective ways to solve the problem of saving and actually turning off active freezing while maintaining the functionality of the main compartment is mode Holiday (Vacation). This function is provided in many modern models Bosch especially for situations when the owners leave for a long time. The operating algorithm of this mode involves maintaining the temperature in the refrigerator compartment at a level of +14...+15°C, which prevents the appearance of mold and odors, but does not freeze the food.
As for the freezer, in the "Vacation" mode it is often either completely turned off (if the design allows) or switched to a minimum load mode, where the temperature rises to values unsuitable for long-term storage of frozen products. Activation is done through the menu or with a separate button. In some interfaces you need to select a mode Holiday and confirm the action.
⚠️ Attention: Before activating the holiday mode, be sure to empty the freezer of perishable foods. As the temperature rises, they can become a source of bacteria and unpleasant odors, which will then be difficult to remove from the plastic panels.
The advantage of this method is that the system continues to control humidity and ventilation, preventing damage to internal surfaces. This is a more gentle option for equipment than completely unplugging it from the outlet. If your model does not have an automatic mode, you can simulate it by setting the maximum temperature manually, as described in the previous sections.
What happens to the ice maker in holiday mode?
In most Bosch models, when the Holiday mode is activated, the ice maker automatically stops. Water may remain in the system, but the ice production cycle is interrupted. It is recommended to drain the water from the system if you plan to leave for more than a month to avoid stagnation and the appearance of a taste.
Features of models with the NoFrost system
Refrigerators Bosch with the system NoFrost (or LowFrost) have their own characteristics. The evaporator is hidden in them, and the air circulates forcibly. Turning off just the freezer is more difficult here due to the single airflow in some configurations or the rigid logic of the fans. However, the principle of temperature setting remains the same.
It is important to understand the difference between NoFrost and LowFrost. In systems LowFrost minimal frost forms, and they need to be defrosted less often. When the freezer is “turned off” (the temperature rises) in such models, condensation may behave differently than in drip systems. Make sure that the drainage holes are not clogged if you plan to keep the camera at elevated temperatures for a long time.
For models with a display, the algorithm often includes entering the extended menu:
- 🔹 Press the setup button (
Settings) for 3-5 seconds. - 🔹 Use the navigation buttons to select the freezer symbol.
- 🔹 Change the value to the maximum available.
- 🔹 Exit the menu, saving the changes.
What to do if the temperature does not rise
There are situations when you have set the maximum values, but the freezer continues to freeze. This could indicate a faulty thermostat, a stuck damper, or an electronic failure. If the compressor runs continuously without turning off for hours, this is a clear sign of a problem. In this case, “software” shutdown is impossible; the intervention of a specialist is required.
It is also worth checking the door seals. If the rubber band does not fit tightly, warm air enters the chamber, sensors record the temperature increase and force the compressor to work harder, trying to compensate for heat loss. As a result, food may freeze more than usual, or vice versa, the temperature will fluctuate.
⚠️ Attention: If you notice that the back wall of the freezer is covered with a solid layer of ice (“fur coat”), and the temperature is not regulated, the defrost sensor or heating element may have failed. Operation in this mode will lead to damage to the compressor.
For diagnostics, you can try to completely defrost the refrigerator (unplug it for 24 hours with the doors open). If, after turning it on and setting it to minimum, the problem recurs a few days later, a technical malfunction is likely. Self-disassembly of the control panel in modern Bosch is not recommended due to the complexity of the plastic latches and the risk of damaging the cables.
FAQ: Frequently asked questions
Is it possible to completely turn off the freezer while leaving the refrigerator running?
In most With two-chamber Bosch refrigerators with one compressor, it is technically impossible to completely turn off the freezer, leaving cold in the main chamber. The refrigerant passes through both circuits. You can only raise the temperature in the freezer compartment as much as possible, turning it into a refrigeration compartment, but the compressor will operate in general mode.
What temperature is considered safe for storing defrosted food?
If you use the freezer as an additional refrigeration compartment, the temperature should not exceed +4...+5°C. At higher values, active growth of bacteria begins. The "Vacation" mode usually keeps about +14°C, which is only suitable for an empty chamber or storing closed canned food, but not for fresh food.
Why does the temperature not change immediately after changing the settings?
Thermal inertia is a physical property of materials. Air and food take time to cool or warm up. Temperature stabilization after changing the settings in a Bosch refrigerator can take from 4 to 12 hours, depending on the load of the chamber and the ambient temperature in the room.
Is it harmful for the compressor to keep the freezer in minimum load mode?
No, it is not harmful. The compressor will simply turn on less often or operate in shorter cycles. However, if the model is not designed to operate at high temperatures in the freezer compartment (for example, lack of engine ventilation), overheating is theoretically possible, but modern Bosch models provide protection against this.