Quote Originally Posted by Itstartedasacc View Post
Lennox started using a universal board a short time ago and sending four different wiring harnesses to replace on the different furnaces. I had to replace a board on a g61 and the original board used 11 of the 12 pins on the mullinex. New board used all 12. Blower always ran till I figured out the old harness wouldn't complete the limit circuit. Changed harness and shagged a$$ outta there
That's not a universal board, it's an update to bring the dash 6 and below G61 up to the dash 7 and later style board/igniter.
Same with the G32.

Think that's bad? Just wait til you have to start carrying parts for their new furnaces.
The ML193 is up to -4 and has 3 boards, none are cross compatible.
Then there's the pressure switches