Dyson Purifier Cool Auto React
User Manual
Assembling your machine
Use both hands to lift your machine out of the box, by its base. Do not lift out by the loop amplifier. Assemble your machine with the filters that are supplied. The Dyson Purifier Cool Auto React is supplied with a HEPA+Carbon filter. Push your HEPA+Carbon filter into the outer cover and position onto the base. Push firmly until both outer covers click securely into place.
Diagram description: The air purifier fan with filter covers open, revealing a HEPA plus carbon filter. Arrows indicate the filter covers need to be attached to the machine's base.
Getting started
Place the remote control on top of the machine with the buttons facing down. Plug in and switch on.
Illustration description: The air purifier fan with the remote control positioned on top of the loop amplifier. The standby on/off button is located on the top of the machine's base.
Remote Control Layout
- Standby on/off: [power-button] located on the top left.
- Airflow speed: [airflow-speed-toggle] button in the middle left.
- Oscillation: [oscillation-button] on the bottom left.
- Information menu: [info-menu-button] on the top right.
- Auto mode: [auto-mode-button] below the Information menu.
- Airflow direction: [airflow-direction-button] below Auto mode.
- Night mode and Sleep timer: [night-mode-sleep-timer-button] at the bottom right.
Power and continuous monitoring
Stand-by on/off
Press the Standby on/off button on your Dyson purifying fan or remote control to stop your machine. It will continue to monitor the air quality.
Continuous monitoring
Continuous monitoring is turned off by default. Once turned on, it will always be active until you turn it off again. With continuous monitoring turned on, your Dyson purifying fan will gather air quality, temperature and humidity information, which is displayed on the LCD screen.
To turn continuous monitoring on, press and hold the Auto mode button on the remote control for 5 seconds. The LCD screen will indicate when continuous monitoring is on or off.
Information menu
Press the Information menu button to scroll through the information being monitored by your Dyson purifying fan. Information about air quality, temperature, humidity, and filter levels is shown on the LCD screen. When a particular type of pollutant causes air quality to decrease, a symbol for the pollutant will show on the LCD screen.
Illustration description: The remote control, highlighting the Information menu button on the top right.
Monitored Information
- Indoor air quality: Monitor the current air quality with a graph showing the last 12 seconds of data.
- Particulate matter (PM2.5): Microscopic particles up to 2.5 microns in size, suspended in the air we breathe. These include smoke, bacteria, and allergens.
- Particulate matter (PM10): Larger microscopic particles up to 10 microns in size, suspended in the air we breathe. These include dust, mould, and pollen.
- Volatile organic compounds (VOCs): Typically odours that may be potentially harmful. These can be found in cleaning products, paints, and furnishings.
- Nitrogen dioxide and other oxidising gases: Potentially harmful gases released by combustion, for example, the burning gas when cooking and vehicle exhaust emissions.
- Indoor temperature: Monitor the ambient temperature to help maintain a comfortable environment.
- Indoor humidity: The amount of water vapour in the air, shown as a percentage.
- Filters: The remaining filter life is shown on the LCD screen and will indicate when your filters need replacing.
Auto mode
Set your Dyson purifying fan to Auto mode, and the on-board sensors will intelligently adjust the machine's settings according to the air quality. In Auto mode, the machine will pause when the target air quality has been reached, switching on again when air quality levels drop. The airflow speed will increase until the target air quality and temperature have been reached.
Illustration description: The remote control, showing the Auto mode button located below the Information menu button on the right.
Airflow speed and direction
Press the Airflow speed button to increase and decrease the airflow speed. Press the Airflow direction button to change the direction of airflow from front to back for your personal comfort. Select the Airflow direction to Fan mode for airflow from the front for purifying and cooling.
Illustration description: The remote control, highlighting the Airflow speed toggle button in the middle left and the Airflow direction button on the right, below the Auto mode button.
Oscillation
Press the Oscillation button to circulate the air around the room and scroll through the oscillation settings from 0 degrees to 350 degrees.
Illustration description: The remote control, showing the oscillation button on the bottom left.
Night mode and Sleep timer
In Night mode, your Dyson purifying fan will continue to monitor and respond to changes in air quality, but only using its quietest settings and with its LCD screen dimmed. Press the Night mode and Sleep timer button to scroll through the timer options.
Illustration description: The remote control, showing the Night mode and sleep timer button on the bottom right.
Changing your HEPA+Carbon filter
Before changing your filter, switch off and unplug your Dyson purifying fan. The remaining filter life is displayed on the screen and will indicate when your non-washable filters need replacing. Press the Information menu button on your remote to view filter status. You'll need to reset the filter life on your machine after replacement.
The Dyson Purifier Cool Auto React is supplied with a HEPA+Carbon filter. To change your HEPA+Carbon filter, push down on the buttons either side of your machine to release the outer cover. Push down on the tabs to remove the old filter. Push the replacement filter into the outer cover and make sure the tabs click into place. Put the outer covers back into position on your machine and push firmly until they both click securely into position. Plug in and switch your machine on, and then reset your filter life.
Diagram description: The air purifier fan with filter covers open, revealing a HEPA plus carbon filter. Arrows indicate the filter covers need to be attached to the machine's base.
Resetting your HEPA+Carbon filter life
It's important to reset your filter life after you have replaced your filter.
To reset the filter life, press and hold the Night mode and Sleep timer button on your remote control for 5 seconds. The display on your machine will show a countdown from five. Once complete, the filter life will be reset, and your machine is ready to use.
Illustration description: Pressing the Night mode and sleep timer button on the bottom right of the remote control for 5 seconds.
Looking after your machine
To ensure the best performance from your Dyson purifying fan, it's important to regularly clean it and check for blockages.
Cleaning your machine
If your machine is dusty, wipe with a damp, lint-free cloth. Check for blockages in the air inlet holes on the filter and the small aperture inside the loop amplifier. Use a soft brush to remove dust and debris. Do not use detergents or polishes to clean your machine.
Error codes
If your machine displays an error code, try turning it off and then on again. If the error code persists, contact Dyson Customer Care.
For more information and support for your machine, go online: https://support.dyson.com.sg/SupportHome/.








