User Manual Vornado MVH Vortex Heater

Once you find your ideal temp. It will keep it by going on and off. It is so quiet that you don't hear it going on an off.

Recently I noticed my Vornado would turn on, with indicator LED and you could hear the unit trip on when you turn the dial, but with no fan or heat. All I had to do was blast around inside with some compressed air, it fired right back up. I'm assuming accumulated dust/gunk was preventing a circuit from completing. I've owned it a few years and this is the only problem I've ever had, and it was due to my lack of maintenance/cleaning