obscenic wrote:
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. .
This is my thought too. Suppose your ignitor tip is burned down somewhat and the gap is now too large for the spark to jump across consistently. That spark needs to go somewhere when the field collapses, and if the gap between the ignitor tip and ground isn't the easiest path, that voltage will dissipate somewhere else, possibly somewhere that the board doesn't like.
Granted, I am not familiar with your furnace model specifically, and am assuming it uses a spark for ignition. If so, I would have a good look at the ignitor and verify the gap is within spec.
