Disconnecting the freezer in a Bosch refrigerator No Frost: instructions and nuances

Refrigerators Bosch with the system No Frost are valued for ease of use and the absence of the need for manual defrosting. However, sometimes situations arise when you need to temporarily or permanently turn off the freezer - for example, during an extended absence, to save energy or a malfunction. Unlike models with a drip system, where it is enough to remove the plug from the socket, the technique with No Frost has its own characteristics.

In this article we will look in detail at how to properly turn off the freezer in refrigerators Bosch with the system No Frostwithout disrupting the operation of the main compartment. You will learn about the differences in procedure for different series (for example KGE39AW20R, KAN92VI30R or KGN39XL30R), as well as the consequences of incorrect actions. We will pay special attention to the nuances that the manufacturer often keeps silent in the instructions.

Before you begin, please note: turning off the freezer may affect the distribution of cold in the main compartment. If your model is equipped with a MultiAirflow or VitaFreshsystem, additional settings will be required. Some refrigerators Bosch after 2020 have protection against accidental shutdown - we'll also talk about this.

Why might you need to turn off the freezer?

The reasons for temporary or permanent shutdown of the freezer are varied. Here are the most common scenarios:

• 📅 Long absence (departure, seasonal residence) - saving energy and preventing compressor wear.
• 💰 Saving on bills for electricity - the freezer consumes up to 30% of the refrigerator's energy.
• ❄️ Fault (freon leak, fan failure No Frost) - a temporary solution until repairs.
• 🏠 Redevelopment kitchen - if the freezer is in the way, but the refrigerator compartment is sufficient.
• 🔧 Test diagnostics - checking the operation of the main compartment without a freezer.

It is important to understand that in refrigerators Bosch No Frost the freezer and refrigeration chambers are often connected by a single cooling circuit. This means that simply turning off the power to the freezer (if possible) can lead to:

• 🔥 Overheating of the compressor due to a violation of the operating cycle.
• ❄️ Freezing of the evaporator in the main compartment (if the system is No Frost common).
• 🚨 Triggering of an alarm (in models with a display).

⚠️ Attention: In refrigerators Bosch series KAD... and KAN... with a system LowFrost (hybrid), turning off the freezer can cause to automatic redistribution of cold to the main compartment. This is fraught with freezing of food in the zone VitaFresh.

Preparing for shutdown: what needs to be done in advance

Before turning off the freezer, follow several mandatory steps. This will help avoid breakdowns and keep food in the refrigerator compartment.

Defrost the freezer (even if the system is No Frost)|Transfer the food to the main compartment or thermal bag|Clear the drainage hole from possible blockages|Check the temperature in the refrigerator compartment (should be +4...+5°C)|Disable the SuperFreezing function (if active)-->

Pay special attention defrosting. Although No Frost assumes there is no frost, ice can still accumulate in the freezer - especially if the door is not closed tightly. To speed up the process:

1. Set the freezer temperature regulator to 0°C (or mark Off, if available).
2. Place a container with warm water (not boiling water!) in the chamber or use fan.
3. After 2-3 hours, wipe the walls with a dry cloth to remove condensation.

If your model is equipped with display (for example, Bosch KAN92VI30R), write down the current settings or take a photo of the screen. After turning off the freezer, you may need to reset the settings.

Step-by-step instructions: how to turn off the freezer in Bosch No Frost

The shutdown process depends on the model and year of manufacture of the refrigerator. Below is a universal algorithm suitable for most devices. (series Bosch With No Frost (2015–2026).

Method 1: Through the control panel (for models with display)

If your refrigerator is equipped with an electronic display (series KAN..., KGN..., KAD...), perform the following steps:

1. Press the button Menu (or Settings) and hold for 3 seconds until the menu appears.
2. Using the buttons +/– or touch arrows select section Freezer (or Freezer compartment).
3. Find option Off or Holiday Mode (vacation mode). In some models this may be Eco.
4. Confirm the selection with the button OK. The display should display Freezer: Off or similar.

In refrigerators Bosch with system Home Connect (for example, KAG90AI20R) after turning off the freezer, a warning may appear on the display Check Freezer. This is normal - just press OKto reset the signal.

Method 2: Mechanical regulator (for models without display)

In refrigerators with mechanical control (for example, Bosch KGE39AW20R) the process is simpler:

1. Find the freezer temperature regulator - it is usually located inside the freezer or on the top panel.
2. Turn the regulator counterclockwise until it stops (on some models it is marked mark Off or 0).
3. Wait until the compressor stops (this will take 5-10 minutes).

If the regulator does not have a position Off, set it to the minimum temperature (–12°C or 1). This will reduce the load on the system, but will not turn off the freezer completely.

Method 3: Complete power outage (extreme case)

If the freezer is faulty or the previous methods did not work, you can turn off the power to the entire refrigerator. However, this. will lead to:

• 🔌 Stopping the refrigeration compartment.
• 🕒 Loss of settings (in models with electronic control).
• 🚨 Possible alarm when turned on again.

To minimize risks:

1. Unplug the plug from the socket.
2. Wait 10 minutes for the capacitors to discharge.
3. Turn the refrigerator back on and immediately set the mode Holiday (if any) so that the main compartment continues to work.

⚠️ Attention: In refrigerators Bosch with an inverter compressor (series KIN...), frequent power outages can lead to firmware failure. If after turning on the display does not respond, a reset to factory settings will be required (see the instructions for the model).

What to do if the freezer does not turn off?

Sometimes users are faced with the fact that the freezer continues to work despite all manipulations. Let's consider possible causes and solutions:

If none of the methods helped, there may be a problem in electronic control module. In this case:

1. Disconnect the refrigerator from the network for 15 minutes.
2. Plug it back in and immediately press the combination Menu + SuperCool (to reset settings).
3. If the error remains, contact to an authorized service center Bosch.

What does error E24 mean in Bosch refrigerators?

Error E24 (or F24 in new models) indicates a problem with the defrosting system No Frost. This could be:

- Malfunction of the evaporator heater.

- Breakdown of the defrost sensor.

- Clogged drainage channel (leads to icing of the fan).

In 80% of cases, complete defrosting on the fan helps 24 hours. If the error appears again, parts need to be replaced.

Consequences of turning off the freezer

Turning off the freezer affects not only energy consumption, but also the operation of the entire refrigerator. Here's what to expect:

• ⚡ Reduced energy consumption by 20–35% (depending on the model and load of the main compartment).
• 📉 Increasing the load on the compressor of the refrigerator compartment, if the system is No Frost general.
• 🌡️ Changing the temperature mode in the zone VitaFresh (adjustment may be required).
• 🔊 Increase in noise of the fan (if the freezer is turned off and the main compartment is working more intense).

In the long term (if disconnected for 1+ months) the following are possible:

• 🔋 Drying out seals freezer doors (it is recommended to leave it ajar or use spacers).
• 🦠 The appearance of odor —even in a switched off freezer, bacteria can multiply. Ventilate the camera regularly.
• 🔧 Oxidation of contacts fan (in models with No Frost), if the humidity in the room is high.

To minimize risks:

• 🧼 Once every 2 weeks, wipe the internal surfaces of the freezer with a soda solution (1 tbsp per 1 liter of water).
• 🚪 Leave the freezer door slightly open (1-2 cm) to avoid mold.
• 🌡️ Monitor the temperature in the refrigerator compartment - it should not rise higher +6°C.

Once a year (during vacation)|Only in case of breakdown|Never turned off|Regularly (save energy)-->

Diagnostics of faults after shutdown

If, after turning off/on the freezer, the refrigerator does not work correctly, perform diagnostics using the following algorithm:

1. Checking the temperature

Use a separate thermometer (for example, Xiaomi Mijia) to measure the temperature in:

• Main refrigerator compartment (should be +2...+5°C).
• Zone VitaFresh (usually 0...+3°C).
• Freezer compartment (if it is on - –18°C and below).

If the temperature in the main compartment is higher than normal:

• Check if it is clogged air duct between chambers (in models with MultiAirflow).
• Make sure that the door closes tightly (use a test with a piece of paper).
• Adjust the temperature to +2°C and wait for stabilization (until 12 hours).

2. Checking the operation of the fan No Frost

In refrigerators Bosch No Frost the fan is responsible for air circulation. If after turning off the freezer it:

• 🔇 Does not turn on the evaporator may have iced up Defrost the refrigerator for 24 hours. hour.
• 🔊 It makes more noise than usual —check to see if a foreign object has gotten into the blades.
• 🌀 Works constantly —this is normal if the freezer is turned off and the main compartment is active.

To check the fan:

1. Unplug the refrigerator.
2. Remove the back panel in the freezer (in most models it is secured with latches).
3. Turn by hand fan blades - they should rotate freely.

3. Diagnostics of the electronic module

If the refrigerator displays errors or does not respond to commands, the control module settings may have gone wrong. To reset:

1. Turn off the power for 15 minutes.
2. Turn on the refrigerator and immediately press the combination:

   Menu + SuperCool + SuperFreezing

   Hold for 10 seconds until the signal sounds.

3. After resetting, adjust the temperature again.

⚠️ Attention: In refrigerators Bosch with system Home Connect resetting the settings via the control panel may result in the device being unlinked from the application. To reconnect the refrigerator, you will need to perform the pairing procedure again (instructions in the user manual).

Features for different series of Bosch refrigerators

The process of disconnecting the freezer may vary depending on the series and year of manufacture of the refrigerator. Below are the key nuances for popular lines.

For models with the system Home Connect (for example Bosch KAG90AI20R), turning off the freezer through the application is impossible - this can only be done manually on the refrigerator panel. In this case:

• The application may display an error Freezer not responding.
• After turning on the freezer again, synchronization with the server will be required Bosch (maybe take up to 10 minutes).

If your model is equipped with two compressors (for example, Bosch KAN92VI30R), the freezer can be turned off completely without affecting the main compartment. To do this:

1. Find a separate freezer control (usually located on the top panel).
2. Turn it to position Off.
3. Make sure that the fan No Frost stops working (only the refrigerator compartment compressor should make noise).

Common mistakes and how to avoid them

When turning off the freezer, users often make mistakes that lead to breakdowns or increased energy consumption. Let's consider the most common ones. common:

• 🔌 Unplugging the plug from the socket without preparation — this leads to a sudden stop of the compressor and can cause water hammer.
• ❄️ Ignoring defrosting —even in No Frost ice accumulates, which interferes with proper shutdown.
• 🌡️ Uncontrolled temperature increase in the main compartment after turning off the freezer.
• 🔧 Independent repair of electronic module without knowledge of circuit design.
• 📱 Using the Home Connect application to turn off —this is impossible, but many are trying.

To avoid problems:

• 📖 Always check with instructions for your model —even within the same series there may be differences.
• 🔌 If the freezer does not turn off through the menu, do not try to disassemble the refrigerator - contact the service.
• 🌡️ After turning off the freezer check the temperature in the main compartment for the first 2-3 days.

Critical error: in Bosch refrigerators with the No Frost system, you cannot turn off the freezer by simply removing the plug from the socket. This leads to icing of the evaporator and breakdown of the fan in 70% of cases.

If you doubt your actions, use the services of a service center. The average cost of diagnostics in 2026 is from 1,500 to 3,000 rubles (depending on the region).

⚠️ Attention: Design details and control algorithms may vary depending on the year of manufacture of the refrigerator. For accurate information, check the data in the instructions for your model or on the official website Bosch.

FAQ: Answers to popular questions

Is it possible to turn off the freezer in Bosch No Frost without turning off the entire refrigerator?

Yes, in This is possible on most models. The method depends on the type of control:

• In refrigerators with mechanical regulator turn it to position Off or to the minimum temperature.
• In models with electronic display select in the menu Freezer → Off.

An exception is refrigerators with with one compressor and a common No Frost system (for example, some models of the series KGE...). In them, turning off the freezer can disrupt the operation of the main compartment.

What to do if, after turning off the freezer, the refrigerator began to operate loudly?

An increase in noise is normal if:

• The fan No Frost works more intensely, compensating for the lack of cooling from the freezer.
• The refrigerator compressor has turned on at full power (usually lasts 1-2 hours).

If the noise does not go away for more than a day:

• Check whether a foreign object has entered the fan.
• Make sure that the refrigerator is level (the adjustable feet should touch the floor).
• If the noise resembles a “buzzing”, the evaporator may have iced up. Defrost the refrigerator for 12–24 hours.

How to turn off the freezer in a Bosch refrigerator with the Home Connect system?

In models with Home Connect (for example Bosch KAG90AI20R), the freezer can be turned off only through the control panel on the refrigerator. The application does not provide such a function.

After disconnecting:

• The application may display a warning Freezer not available.
• When you turn on the freezer again, you will need to reconnect to Wi-Fi (if the connection is interrupted).

To avoid problems, before disconnecting:

1. Close the application Home Connect on your smartphone.
2. Disable the freezer through the refrigerator menu.
3. Wait 5 minutes and check the status in the application.

How much electricity can you save by turning off the freezer?

Savings depend on:

• Refrigerator model (one- or two-compressor).
• Load of the main compartment.
• Temperature in room.

On average, the freezer consumes:

• 🔌 30–40% of energy in single-compressor models.
• 🔌 20–25% in two-compressor.

Example: if a refrigerator consumes 400 kWh per year, turning off the freezer will save 80–160 kWh (about 300–600 rubles per year at 2026 tariffs).

Is it possible to leave the freezer unplugged for the winter?

Yes, but following the rules:

• 🧊 Completely defrost and dry the freezer.
• 🚪 Leave the door ajar (1-2 cm) to avoid mold.
• 🌡️ Control the temperature in the main compartment - it should not fall below +2°C (otherwise the food will freeze).
• 🔌 Time per month, turn on the freezer for 1-2 hours to lubricate the compressor (relevant for models older than 5 years).

If the refrigerator is in an unheated room (for example, in a country house), before turning it off:

• Make sure that the temperature in the room does not drop below +5°C.
• Turn off the refrigerator from the network if the room freezes.