Vacuum shows a filter icon even though the filter is installed; suction may be noisy or whistling around the filter area.

Safety: Turn off and remove the battery before adjusting filters.

• Remove and inspect filter: Take out the filter and check the rubber gasket for tears, flattening, or deformation.
• Clean sealing surfaces: Wipe the filter seat and gasket with a dry cloth to remove dust that may prevent sealing.
• Refit firmly: Reinstall the filter, twisting or pushing until it clicks and feels secure with no wobble.
• Replace if damaged: If the gasket is worn or the filter is warped, replace with a genuine Dyson filter.
• Test: Run the vacuum and listen for air leaks. If the warning persists, the filter sensor or housing may be damaged and require professional repair.