Atwood furnace shuts down after first failed ignition

Old-Biscuit wrote:

Then why do you loose programming on t-stat?

At best guess I would say it's getting a shock down the line. The programmable thermostat is removable, it has pin connections to the backing plate which is where the t-stat wires connect. I can take the t-stat off it's backing plate, and leave it sitting on the counter for 3 months and it still displays the time and maintains it's settings.