This manual might help you:
If not and not the right answers here, try a little googling. Sometimes, google can be your best friend when you are otherwise stuck...
I'm hesitant to say this but I helped a friend put a new board in their furnace recently. Worked great at first and then stopped. Could not get it going for anything, then DW, being a woman and they way women can be, said "why don't you just try turning everything off and turning it back on?" Voila, that fixed it!
Chock up another one for DW.