Armstrong furnace pressure switch problems

[Mmtc79]

Just shooting this out anyone still having problems with the Armstrong furnaces with pressure switch problems or have they come up with a fix
I know most of the ones I come across don't have the excelerator outside

[bster352]

I was told by Armstrong that it ended up being the board. The problem was the way the board processed the signal from the pressure switch. I forget the exact numbers but they "slowed down" the number of times per second the signal was checked.