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I got the same problem but on one of them the inducer runs and it won't light and it doesn't send voltage to the igniter. On the other one it says something about a pressure switch it gives a code of...

Well I t doesn't lose signal from the stat
I checked he W in the board

Yeah some times it will say pressure switch stuck open and then sometimes it would say pressure switch stuck closed

I got a miller furnace and I replaced the pressure switch on it because it was giving me a code for switch stuck closed
I replaced the switch and it still does it
If I press on the circuit board it...