Dyson

Dyson Purifier Hot+Cool Gen1

Answers and step-by-step fixes from the official Dyson manual.

What does the display show?

• Error code: The machine shows an error. An error code on the screen means the machine has detected a problem.
• Countdown from five: Filter life is resetting. This appears after you hold the Night mode button to reset the filter life.
• Pollutant symbol: A pollutant is lowering air quality. A symbol appears on screen for the type of pollutant causing air quality to drop.
• Continuous monitoring on/off: Continuous monitoring status. The screen shows whether continuous monitoring is currently on or off.

Common problems

The machine is showing an error code

1. Have you turned it off and on again? Switching the machine off and back on often clears the error.
2. Is the error code still showing? If turning it off and on doesn't clear it, get in touch with Dyson Customer Care.

Airflow seems weak or the machine seems dusty

1. Is the machine dusty? Wipe it down with a damp lint-free cloth.
2. Are the air inlet holes on the filter blocked? Check for blockages and clear them.
3. Is the aperture inside the loop amplifier blocked? Use a soft brush to clear dust and debris from it.

The machine says the filter needs changing

1. Has the filter life run out? The screen shows the remaining filter life and tells you when it needs replacing.
2. Did you reset the filter life after fitting a new one? You must reset the filter life every time you replace the filter.

The room's air quality isn't improving

1. Is the machine set to Auto mode? In Auto mode, the on-board sensors adjust settings to match air quality.
2. Has the target air quality already been reached? The machine pauses once the target air quality is reached, then starts again if it drops.
3. Is oscillation turned on? Oscillation helps circulate purified air around the room.

Step-by-step guides

Change the HEPA+Carbon filter

1. Switch off and unplug the machine.
2. Push down the buttons on both sides to release the outer cover.
3. Push down the tabs and remove the old filter.
4. Push the new filter into the outer cover until the tabs click into place.
5. Put the outer covers back on and push until they click into position.
6. Plug in and switch on the machine.
7. Press and hold the Night mode button on the remote for 5 seconds.
8. Wait for the screen to count down from five.

Clean the machine

1. Wipe the machine with a damp lint-free cloth if it's dusty.
2. Check the air inlet holes on the filter for blockages.
3. Check the small aperture inside the loop amplifier for blockages.
4. Use a soft brush to remove dust and debris.