What do the alert icons on the LCD screen mean?
The LCD screen displays two main alerts: a Filter alert, which means the filter is either not fitted correctly or needs cleaning, and a Blockage alert, which means your machine has a blockage that needs removing. There is also a 'Fully charge before first use' alert visible on initial setup. (Page 5)
From the official Dyson V12 Detect Slim Cordless Vacuum manual, page 5
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