I attended Brady’s home as he had no heat. Upon diagnosis I found that the inducer would come on and ramp up, the ignitor would come on but gas valve did not energize and the furnace should a code e125. This is the code for a control hardware failure. I found that the control board was not sending power to the gas valve. When I manipulated the main wiring harness plug to the control board I was able to get the furnace to fire. This is a faulty control board and it needs to be replaced.