Help! Arcoaire Furnace not working

[bfuller83]

I have an Arcoaire furnace that was installed last year. I came home today and it's not firing up. I have verfied that it has power all the way into the furnace and the diag light is flashing normal according to the decoder on the side of the furnace. Any Ideas as to where to start? I am trying to get ahold of the company who installed it too...so well see...

[SeattlePioneer]

Start by taking the cover off the burner compartment. Post the model number off the rating plate for the furnace, usually found in the burner compartment.Turn the power off and the thermostat down. Turn the power on then the thermostat up to 80 or so. Observe and report in detail on the sequence of events that you observe happening at the furnace as it starts. You may need to repeat that a few times until you are sure you aren't missing anything.