Would you know where white wire from t stat connects to blue wire going to furnace? Checked in middle ac unit and it connects to another wire in a 2 wire bundle and goes back into ceiling Have voltage at that connection but not blue wire going to furnace when t stat is in heat mode
thank you...
Great video, waiting for rain to stop to check. I believe it’s a power issue but now I know the wiring at furnace
Thanks again and will let you know what I find