I have a model 330AAV 80 furnace... It will not light, I have checked the thermostat (jumpered), The blower motor has a 90 sec cycle, then the inducer motor starts, the .22 low fire pressure switch pulls in, and then the high fire pulls in, but nothing after that... I am not sure that the high fire is pulling in enough to allow the switch to make full connection... The valve pulls in and the switch makes, correct? I cleaned the flame sensor, which was not too dirty, and found an obstruction in my inducer vent pipe which I removed (bird of all things), and I am at a loss... what do I do from here?
