Upon arrival spoke with Brennan (GC) at cowboy construction. Brennan stated that he had the damper motor zone board replaced. After this replacement the homeowner stated that there was no heat being provided to the home. I began by going up into the attic where I found that the blower motor was constantly running even with the thermostats off. Which is indicating a high voltage short. I opened the blower compartment and tested for a short on the control board. As it was flashing indicating bad ground/reversed polarity. I found the short to be on the heat side of the control board. I presented findings to Brennan and homeowner. They went with replacement of the furnace control board. Unit was heating upon departure.
