@mela Thanks for your post. Check out this visual guide page regarding V6 and the different kinds of light patterns that machine will make and what each pattern will indicate to you.

https://www.dyson.co.nz/products/vacuum-cleaners/sticks/dyson-v6/owners-guide#:~:text=A%20flashing%20blue%20light%20indicates,please%20call%20the%20Dyson%20Helpline.