Brett and Tbutler, thanks for the info. Trying not to throw parts at it but the board was bad when it was taken out and tested, so replaced it. Now I know what to do next. Thanks. Thanks
Atwood 8500 Hydro Flame Furnace. Fan comes on, cycles and goes off. Replaced electronic board as suggested. Still the same symtom, fan on, cycles, fan off. Any suggestions or help out there. Thanks so much Ed