Modern refrigeration units of the German brand Bosch are famous for their reliability and thoughtful functionality, which allows flexible control of temperature conditions. However, sometimes owners are faced with a question that requires changing the standard operating algorithm of the device, for example, completely turning off the lower section. This may be required to save energy, if you are away from home for a long time, or if you need to use the space only for storing products that do not require freezing.
It is important to immediately note that technically independent turning off the compressor specifically for the freezer compartment in most single-compressor models is impossible without losing the cold in the entire volume. However, engineers have provided special program modes that allow minimizing energy consumption or completely defrosting the chamber while maintaining the operation of the refrigerator compartment. Understanding these nuances will help avoid damage to products and equipment breakdowns.
In this article we will analyze in detail all the available methods for controlling modes, from using a digital display to mechanical switches. You will learn how to correctly switch the device to the “Vacation” or “Super Freeze” mode for subsequent shutdown, as well as what errors can occur if used incorrectly. In models with the NoFrost system, complete shutdown of one chamber without affecting the other is physically limited by the design of the evaporator.
Principles of operation of the Bosch cooling system
To properly manage the temperature, you need to understand the basic structure of your unit. In classic models with a single compressor, the refrigerant circulates through a single circuit, passing first through the freezer and then through the refrigerator compartment. That is why full turning off cooling in the lower zone often leads to an increase in temperature in the upper part, if special dampers or a second circuit are not involved.
More modern models, especially series VitaFresh or equipped with technology DuoCoolinghave improved air circulation system. Additional fans and dampers are used here, which allow more independent climate control in different zones. However, even in such systems, the compressor usually works to create cold for the entire volume at once.
There is also a division by type of control. The electronic panel allows you to set precise values in steps of one degree, while the mechanical regulator works on the “more or less” principle. In both cases, the operating logic remains the same: you give a command, and the electronic module or thermostat makes the decision to turn on the compressor.
Vacation mode as an analogue of shutdown
The most common and safe way to “turn off” active freezing while maintaining the operation of the refrigerator compartment is to activate the “Vacation” mode. This algorithm is designed specifically for situations when the owners leave for a long time and leave the refrigerator empty or half-empty.
When this function is activated, the temperature in the freezer rises to a value of about -15°C or higher, which significantly reduces the load on the compressor and energy consumption. At the same time, the temperature in the refrigerator compartment is maintained at about +14..+15°C, which prevents the appearance of mold and unpleasant odors, but does not allow storing perishable products.
- 🏖️ Saves up to 40% of electricity compared to the standard operating mode.
- 🛡️ Prevents the formation of mold inside the empty refrigeration compartment.
- ❄️ Does not require complete defrosting and cleaning before turning on after return.
- ⏱️ Can work indefinitely for a long time without harm to the compressor.
To activate the mode on models with a display, it is usually enough to press the corresponding button with the image of a palm tree or the inscription Vacation. In models without a display, the procedure may differ and is often described in the instructions for the specific series Bosch.
⚠️ Attention: Before activating the “Vacation” mode, be sure to remove all perishable foods from the refrigerator compartment, since a temperature of +15°C will not ensure their safety.
Using the SuperFrost function and its shutdown
Function SuperFrost (Super Freeze) is designed for quick freezing of large volumes of fresh food. When it is turned on, the compressor runs continuously, ignoring the thermostat signals that the target temperature has been reached. Many users mistakenly believe that pressing this button again can “turn off” the camera, but this is not the case.
In fact, if you have turned on the intensive freeze mode and want to return the refrigerator to its normal operating rhythm, you need to forcefully deactivate this function. In most models Bosch mode SuperFrost turns off automatically after 50-65 hours of operation, but you can do this manually to reduce noise and load on the unit.
To manually turn off intensive freezing on the control panel you need to:
- Find the button with the snowflake symbol or inscription
Super. - Keep it pressed for 3-5 seconds until the indicator disappears.
- Wait until the current temperature indicator stops flashing.
After turning off the function, the temperature will begin to gradually increase to the values you set. You should not expect an instant change in the indicators on the display; the system needs time to stabilize thermal exchange.
Mechanical regulation and thermostats
In refrigerator models Bosch older years of manufacture or in budget series, control can be carried out using mechanical regulators. They are rotary knobs with divisions from 1 to 5 or from Min to Max. There is no digital shutdown here, but it is possible to minimize the work of the compressor.
If your goal is to “weaken” the freezer as much as possible, turn the control to the Min or 1position. This will cause the compressor to turn on less often and the temperature in the chambers will increase. However, you should be careful: when setting the minimum value, the temperature in the freezer can rise above -6°C, which is dangerous for long-term storage of meat or fish.
In some older models there are separate thermostats for each chamber, but this is rare for household single-compressor refrigerators. If you see two knobs, check the instructions that one of them is not a freezing power regulator, and not an independent thermostat.
| Position of the regulator | Approximate temperature in the freezer | Compressor operating frequency | Recommendation |
|---|---|---|---|
| Min / 1 | -6..-10°C | Low | Short-term storage, saving |
| Average / 3 | -18°C | Normal | Standard mode storage |
| Max / 5 | -24°C and below | High | Frozen fresh foods |
The use of a mechanical regulator requires periodic monitoring using an external thermometer, since the accuracy of the divisions on the handle may vary depending on environmental conditions environment.
Disconnection through the Zero Degree compartment (VitaFresh)
Models with a zero zone deserve special attention. VitaFresh. Although this is not a freezer in the classic sense, many users confuse these compartments. In some configurations, drawers VitaFresh can be switched between the “Meat/Fish” (about 0°C) and “Vegetables/Fruits” (about +5..+8°C) modes.
Switching is done using a special slider or button on the front panel of the drawer or inside the chamber. If you move the control to the vegetable position, the temperature in this compartment will rise and it will no longer function as a deep chill zone. This is the only way to “turn off” freezing in a specific box without affecting the rest of the volume.
What is the difference between BioFresh and VitaFresh?
The technologies are almost identical and developed by the BSH concern. The name VitaFresh is used in Bosch refrigerators, and BioFresh is used in Siemens and Gaggenau appliances. The principle of operation and efficiency are the same.
It is worth noting that completely turning off the cooling in the drawer VitaFresh is impossible without turning off the entire refrigerator, since the cold comes there from a common chamber. You only change the target temperature, but not the source of cold.
Full defrosting and cleaning
If by “turning off” you meant the need to defrost the chamber for washing, then the algorithm of actions is different. Systems NoFrost in refrigerators Bosch automatically remove moisture, but once every year or two it is recommended to carry out complete defrosting for hygiene and maintenance.
To do this, you must completely turn off the device from the network or set the temperature regulator to position Off (if this is provided for by the design). Doors should be left open. Do not use hair dryers or heating devices to speed up the process, as sudden temperature changes can damage the plastic and the evaporator.
- 🧼 Remove all drawers and shelves for separate washing.
- 💧 Place containers to collect melt water or use towels.
- ⏳ Leave the refrigerator open for at least 12 hours until completely dry.
- 🔌 Before turning on, make sure that all parts are dry.
⚠️ Attention: Never pick off the ice with a knife or sharp objects. Damage to the evaporator tubes will lead to freon leakage and expensive repairs that will not be covered by the warranty.
☑️ Checklist before defrosting
After completing the procedure and turning on the refrigerator, let it work for 2-3 hours without loading food to gain operating temperature. This is especially important for models with NoFrostso that the system has time to stabilize the cycles.
Frequent errors and fault codes
When trying to manipulate temperature conditions, users may encounter flashing indicators. On displays Bosch a flashing temperature or alarm symbol often indicates that the chamber is too warm. This is normal immediately after turning on or loading warm products, but if the signal does not disappear, it is worth checking how tightly the doors are closed.
Sometimes users try to “deceive” the system by covering the temperature sensors to turn off the camera. This is strictly forbidden. The electronic control module (ECU) interprets such readings as an emergency situation and can either go into protection, or, conversely, turn on the compressor in continuous mode, which will lead to freezing and breakdown.
Error codes that may occur in case of temperature failures:
- ❄️ E03 — Malfunction of the temperature sensor in the refrigerator compartment.
- ❄️ E05 — Problem with the sensor in the freezer compartment.
- ❄️ E11 — Malfunction of the AirControl damper (air distribution system).
If you see these codes, reset the settings to factory settings (usually by long-pressing the settings button) and check the operation of the device. If the error recurs, diagnostics by a service center is required.
Questions and answers (FAQ)
Is it possible to completely turn off the freezer while leaving the refrigerator running?
In most single-compressor models Bosch completely turn off the cooling at freezer, leaving the cold in the refrigerator is technically impossible. The refrigerant circulates through a common circuit. You can only raise the temperature in the freezer to -10..-12°C using the regulator, but this will not be a full “shutdown.”
Is it safe to keep the refrigerator in the “Vacation” mode all summer?
Yes, the mode Vacation is designed for long-term operation. However, make sure that the refrigerator is in a well-ventilated area, away from direct sunlight and heating devices, so that the compressor does not overheat.
Why does the temperature not drop after turning off the SuperFrost mode?
After intensive operation, the system requires time (from 2 to 6 hours) to stabilize heat transfer. Do not open doors frequently during this period. If after 24 hours the temperature has not returned to normal, check the tightness of the seals.
What to do if the freezer stops freezing after a power surge?
Try to perform a full reset by unplugging the appliance for 15-20 minutes. If, after turning on and setting the maximum cooling power for 5-6 hours, the cold does not appear, the compressor has probably failed or the capillary tube has become clogged - a specialist is needed.
Does turning off one chamber affect the service life of the compressor?
Attempts to artificially limit the operation of the chamber (for example, gluing sensors) can lead to the compressor operating without stopping, which shortens it resource. Using standard modes (Holiday, temperature controls) is safe for the engine.