Dyson says airways blocked but you cant find a blockage anywhere.
You have checked the floor tool, pipe, bin opening and the filter is clean? The issue is likely to be dust build up or even a blockage inside the cyclone.
This can then even make a new filter dusty within seconds , creating further suction issues.
Avoid this Dyson issue and fix it
The way to avoid this happening is to remove the bin and tap the clone gently insde your whelie bin to get rid of dust build up, each time you empty the vacuum.
This method can even cure the dust build up you have without taking the vacuum apart.
If you will get this message with a clean (and obviously bone dry) filter installed, Please follow my video below to take the cyclone apart easily to cure the issue once and for all.