Had a very quick look at this today in between field calls.
clog / bag full red indicator appears on initial power up - but only when in upright position - when toe lever is pressed and vac is used then no problems and works perfectly including auto level function.
Vac is approx 6 months old, fitted a new bag and filter, checked all routes for blockages and nothing found.
The clue here is when vac is upright, clog led lights but if i pull out the long wand then fault vanishes - so am i right in saying there is a suction / air flow sensor/switch on the base section.?
will strip it tommorow as i am in workshop all day and plenty of time on this one, anyone seen this particular issue before ? or can offer advice please.