This is the second time that I've been able to fix the central vac
by recreating the classic "try it now" kids-in-the-hall skit.
Last time... the vac turned off and refused to turn on again.
This time... it was on... and stay'en that way, unless I unplugged it... (regardless of the switch position).
So ... take it off the wall,
Into the garage...
Take it appart...
Clean all the parts...
Put it back together again...
Voila.
Works like a charm.
No... idea...
:)