I have a problem getting the Fantastic Fan to come on, made sure the fuse was not blown out by pulling the knob down to manual operation and it worked just fine. Then I pushed the knob up and set the thermostat control to the lowest setting and it still did not come on. The temp outside was around 85 degrees, it should be working and it is not. Is there something I am missing or do you think this is a dealer fix item?