No, as the device does not have a backup battery, the previously selected settings are discarded when the device is switched off and must be saved again the next time the device is switched on.

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E2 = Humidity above 90% - Safety stop (check/replace sensor)

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Occasional, brief noises can occur, especially when heating the water. Otherwise, evaporators are rather quiet during operation and their noise is usually only audible in the background.

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After the appliance is disconnected from the power supply to empty the water and refill with fresh water and then switched on again, the symbol for the water change is automatically deleted.

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After replacing the A7017 Ionic Silver Stick^® , delete the symbol on the display by holding down the “On/Off” button and the “Timer” button simultaneously for 3 seconds. Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Download.

After replacing the A7017 Ionic Silver Stick^® , delete the symbol on the display by holding down the “On/Off” button and the “regulate power” button simultaneously for 3 seconds.
Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Download.

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The blue lighting can be switched on and off using the slide switch on the back of the base. The red lighting (no water) cannot be switched off.

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No, this option is not available.

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• Due to the natural evaporation principle, more time is needed for the humidity to rise.
• The air circulation in the room is very high. Close doors and windows.
• The device is placed near a poorly insulated window or door, which causes air circulation. In the case of high rooms, wooden buildings and wooden furniture, the humidification of the indoor air takes correspondingly longer.
• The windows are open, which allows cold and dry air to enter the room. Close window. Do not do without shock ventilation.

Power off/on does not reset the sensor.

To restart the sensor, unplug the device and wait at least 2 minutes before reconnecting the device to the power supply.

Power off/on does not reset the sensor.

To restart the sensor, unplug the device and wait at least 2 minutes before reconnecting the device to the power supply.

Air Washers are extremely quiet in operation and only produce a gentle noise reminiscent of white noise. Models with an additional water tank work on the principle of a bird bath. Every now and then, there may be "gurgling" noises when water flows into the tub. These noises are perfectly normal and a sign that the device is working properly.

Air Washers can contribute to the purification of indoor air, but they are primarily designed for air humidification.

For effective air purification and odor control, we recommend the HYBRID Humidifier & Air Purifier H700 device or one of our BONECO Air Purifiers.

Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads for each device.

The A7017 Ionic Silver Stick^® prevents the growth of microbes in the water pan (changed 1x per year).

The AW200 Evaporator Mat is responsible for the natural humidification of the indoor air (cleaning every 2 weeks, descaling as required, change every 2 years).

We recommend the A7417 Calc Off Cleaner and Descaler for BONECO Humidifiers (descaling as needed).

Yes, the AW200 Evaporator Mat can be cleaned either by hand or at max. 40°C in the washing machine and thus has a lifespan of up to 2 years.

• Due to the natural evaporation principle, more time is needed for the humidity to rise.
• The air circulation in the room is very high. Close doors and windows.
• The device is placed near a poorly insulated window or door, which causes air circulation. In the case of high rooms, wooden buildings and wooden furniture, the humidification of the indoor air takes correspondingly longer.
• The windows are open, which allows cold and dry air to enter the room. Close window. Do not do without shock ventilation.

• The water has been in the water tank and in the water tub for a long time.
• The device is not cleaned.
• Accessories are used up.
• Please refer to the operating instructions for the device. The user manual is part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads.

• Check other socket
• Check the cable for damage
• Test an alternative, suitable power supply (if available)

Evaporators are extremely quiet in operation and only produce a gentle noise reminiscent of white noise.

• Check other socket / USB connection
• Check the cable for damage
• Test an alternative, suitable cable (USB-C)

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The A7017 Ionic Silver Stick^® prevents the growth of microbes in the water pan (changed 1x per year).

The A7018 Evaporator Mat is responsible for the natural humidification of the room air (change every 2-3 months).

We recommend the A7417 Calc Off Cleaner and Descaler for BONECO Humidifiers (descaling as needed).

No, this is not possible because the A7018 Evaporator Mat is made of paper. We recommend replacing the evaporator mat every 10-12 weeks to ensure hygienic operation.

F1/F2 = No error code - Test function dimmer / hygrosensor - The test mode must be run through and completed.

E2 = Humidity above 90% - Safety stop (check/replace sensor)

For safety reasons, continued use of the device is not recommended. Please contact our customer service for further assistance.

The BONECO S250 is equipped with a descaling function. After the cleaning time has elapsed, the cleaning symbol will automatically turn off.

Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads for each device.

The BONECO S450 is equipped with a descaling function. After the cleaning time has elapsed, the cleaning symbol will automatically turn off. Alternatively, press and hold both adjustment buttons (up arrow and down arrow) at the same time for about 5 seconds to manually delete the symbol.

Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads for each device.

Press the adjustment buttons together for about 5 seconds, after which the sybmol will go out.

• Check other socket
• Check the cable for damage
• Test an alternative, suitable power cord (if available)

No, the steam is cooled by a ventilation system so that it is released into the room air lukewarm.

The A451 Anti-Mineral-Pad reduces the calcification of the evaporator shell and reduces the frequency of necessary descaling. We recommend the A7417 CalcOff Cleaner and Descaler for BONECO Humidifiers. Ionic Silver Stick® is not needed for steamers, as bacterial growth is inhibited by heating the water.

Occasional, short-term noises can occur especially when the water is heated. Otherwise, vaporizers are rather quiet in operation, and their noises are usually only perceptible in the background.

Please always place your Steamer on a stable surface on the floor! A Steamer should never be placed on an elevated surface, as this can pose several safety hazards such as tipping over and the uneven distribution of the steam!

S250, S450:
The S250 & S450 are equipped with a hygrometer, which automatically regulates the power of the device to reach the selected humidity. When this value is reached, the device no longer emits steam. If the desired value has not yet been reached and no steam is escaping, please read the next section.

S200, S250, S450:
If your appliance no longer emits steam, please check whether there are limescale residues on the heating plate. For your safety, this device is equipped with an automatic safety shut-off of the heating plate, which is triggered in the event of heavy limescale residue. Please clean your device as described in the user manual.

After cleaning is complete, clear the message on the display by pressing and holding the "On/Off" button for about 3 seconds.

Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads.

The BONECO U700 is equipped with a descaling function. Once the cleaning time has elapsed, the cleaning symbol will automatically turn off.

Alternatively, the descaling process can be canceled at any time using the “On/Off” button.
Please refer to the operating instructions for the appliance.

The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads.

1) Check that the red valve on the water tank cap has been removed

2) Check whether a target humidity has been stored on your device and whether it has been reached (device will then automatically interrupt operation).

3) Remove the A250 AQUA PRO (descaling cartridge) and test whether the device is now producing mist:

• Device works without A250: Immerse the A250 in water (again) for 2-3 minutes and now try operation again with A250; Replace the used A250 after 6 months at the latest. Using the device without an A250 is strongly discouraged!
• Device does not work even without A250: Check whether the float (white ring) can be moved in the nebulizer chamber. If this is stuck, we recommend descaling, as it can jam due to limescale deposits.

1) Check whether a target humidity has been stored on your device and whether it has been reached (device then automatically interrupts operation).

2) Remove the A250 AQUA PRO (descaling cartridge) and test if the device is now producing mist:

• Device works without A250: Immerse the A250 in water (again) for 2-3 minutes and now try operation again with A250; Replace the used A250 after 6 months at the latest. Using the device without an A250 is strongly discouraged!
• Device does not work even without A250: Check whether the membrane is contaminated or calcified. If this is the case, we recommend descaling, as the membrane may no longer function properly due to limescale deposits.

The mood light can be switched off and on on the display. Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads.

No - even a small amount is enough to damage the plastic and the Ultrasonic unit.

Do not place the Ultrasonic directly on the ground, but on a raised surface.

The nozzles should be aligned in such a way that the mist does not fall back on the device and possibly falsify the measured values, but in the opposite direction into the open space.

Please refer to the operating instructions for the device. The operating instructions are part of the device packaging and can be downloaded from this website under FAQ  -> Manuals & Downloads.

E1 stands for a problem with filling the Ultrasonic chamber. This means that no / too little water flows in. Possible causes:

1) The A250 filter cartridge contains air or is clogged. Please remove the A250 and try again. If that works, water the cartridge again or replace it.

2) Refill valve or float glued. Dissolve some CalcOff in lukewarm water and add it to both chambers. Leave it on and turn the device on/off several times

Remove the A250 AQUA PRO (descaling cartridge) and test whether the device is now producing mist:

• Device works without A250: Immerse the A250 in water (again) for 2-3 minutes and now try operation again with A250; Replace the used A250 after 6 months at the latest. Using the device without an A250 is strongly discouraged!
• Device does not work even without A250: Check whether the membrane is contaminated or calcified. If this is the case, we recommend descaling, as the membrane may no longer function properly due to limescale deposits.

1) Check whether a target humidity has been stored on your device and whether it has been reached (device then automatically interrupts operation).

2) Remove the A250 AQUA PRO (descaling cartridge) and test if the device is now producing mist:

• Device works without A250: Immerse the A250 in water (again) for 2-3 minutes and now try operation again with A250; Replace the used A250 after 6 months at the latest. Using the device without an A250 is strongly discouraged!
• Device does not work even without A250: Check whether the float (white ring) can be moved in the nebulizer chamber. If this is stuck, we recommend descaling, as it can jam due to limescale deposits.

E1 = Short circuit in the temperature sensor (temperature sensor replacement required)

E2 = Broken circuit (either atomizer, temperature sensor or motherboard defective)

Remove the A250 AQUA PRO (descaling cartridge) and test whether the device is now producing mist:

• Device works without A250: Immerse the A250 in water (again) for 2-3 minutes and now try operation again with A250; Replace the used A250 after 6 months at the latest. Using the device without an A250 is strongly discouraged!

• Device does not work even without A250: Check whether the float (white ring) can be moved in the nebulizer chamber. If this is stuck, we recommend descaling, as it can jam due to limescale deposits.

The slide switch on the back of the base can be used to turn the blue lighting on and off. The red lighting (no water) cannot be turned off.

No - even a small amount is enough to damage the plastic and the Ultrasonic unit.

No - even a small amount is enough to damage the plastic and the Ultrasonic unit.

• Check other socket
• Check the cable for damage

Check other socket / USB port

Check the cable for damage

Test an alternative, suitable cable (USB-C)

• Check other socket
• Check the cable for damage
• Test an alternative, suitable power supply (if available)

BONECO Ultrasonic Humidifiers work with very high frequencies (approx. 3 MHz), which are outside the audible range of humans and pets. By comparison, very few animals such as bats and some dolphins can perceive this high frequency.

Device is damaged, please contact the service center.

Basically, these devices are intended for travel in hotel rooms, but can also be used at home or in the office. Humidification takes place exclusively in the immediate vicinity. Please pay attention to the careful cleaning of the device, as the device does not contain a descaling cartridge.

• Every 6 months, depending on water hardness and frequency of start-up of the Ultrasonic.
• With a reduction in fog emissions.
• If white limescale deposits form around the device.

With treated water (ion exchanger), the limescale is filtered out of the water, but at the same time sodium ions are added to the water. These sodium ions are not filtered through the descaling cartridge and leave behind a white precipitate.

The A7017 Ionic Silver Stick^® inhibits the growth of microbes in the water tub (changed 1x per year).

The A250 AQUA PRO descaling cartridge ensures a water mist without limescale residues and removes odors from the water (changed every 2-6 months).

We recommend the A7417 CalcOff Cleaner and Descaler for BONECO Humidifiers (descaling as needed).

The water has been in the water tank and water tray for a long time. Please clean all parts of the appliance. Accessories are used up.

Please refer to the operating instructions for the appliance.

The operating instructions can be downloaded from this website for each appliance under FAQ  -> Manuals & Downloads.

The AU50 Cotton Stick serves as a Humidifier element (changed every 3 months).