Keeprite NG furnace code "fail to ignite"

4spdragtop said
Pics of circuit boards/CPU.

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Interesting! That ignitor board is a Carrier piece (P/N HK42FZ020).

You can get one from Supply House as well:

https://www.supplyhouse.com/Carrier-HK42FZ020-2-Stage-Control-Board
Not sure how the whole "north of the border" thing would work for you, though.

There are some on Amazon as well.