I just swapped out the combustion blower motor on my VF100 and I noticed the Enviro label on the box stated that the motor was an increased RPM motor. The last one I bought didn't have this description on the box. When I hooked the increased RPM motor up the first time, I got a shutdown error with two blinking lights on the control panel. I swapped the two power connectors and the start up was normal. So I have to figure that the new motor has a different polarity configuration than the previous motor. It didn't matter how the two wires were connected on the old one. Does this make sense to any Techs out there?