If your ignitor looks like this it is not the problem. Look for a round stick that looks like the second picture and clean it off with some steel wool or fine sand paper. This will be the flame sensor.
please post any other concerns you may have here.
If this has answered your question please click the accept button next to my post.
Best regards, XXXXX XXXXX Smithy
The picture of the igniter was only an example. So long as it looks similar that is not an issue.
Ok try this. Remove the thermostat from the wall. Connect the terminals for R (or RH) with W - this will send the call for heat to the unit. Leave them connected to see if the unit starts. If it starts normaly then the thermostat is defective. If it continues like it is then the control board is going to be your problem. If possible return the flame sensor as defective and try another just to be sure it isnt a bad sensor.
I did some looking around the internet and I see that the unit has had some issues. Mostly with the control boards. I did not see any specific pattern or anything that leads me to think that this particular unit has had excessive amounts of consumer complaints or problems out of the ordinary. It may be that you are the unfortunate person that got the bad one of the lot.
Please post any other concerns you may have here.