“ Only happens at floors with newer innovation board button”.
This might be your clue. ^ ^ ^ incompatible board?
Interesting. I’ve seen the Innovation card which turns on an LED array used with MCE serial link controls, but not Swift Futura. My job which is 1996 vintage, those buttons wire directly to the HPU card.
Are the button Cards voltage/job specific, or generic? I say that as you said your troubles are at the floors you’ve replaced the cards on.
I’m not sure what a “meet style button link board”.
