My installer friend came an installed my Trane TUY080R9V3W today. He works for a reputable HVAC company here locally, but does some work on the side. He is an installer, not a technician. The problem we encountered today was that the fan would not actuate when there was a call for it. The burners seemed to work properly in stage 1 & stage 2...pressures checked out. The only problem (and seemingly a big one) is that the blower fan would not come on. The board "clicked" several times in what appeared to be a call for the fan, but no luck. Eventually the unit shuts down. Any ideas? My installer seemed to think that the fan was getting "juice" as he put his multimeter on the connector, and got a 123 reading. This unit was purchased from somoene in VA who purchased an upflow, and really needed a downflow. Unit is definitely new. Installer friend is getting a technician friend to check it out, but I wanted to have some possibilities available to discuss with him when he arrived. Your thoughts?