Furnace Ideas / Help
Giot pics but I can’t put them on here. I read in the instructions it’s set to 7.
That doesn't make sense as the diagram only goes to tap 5
What I'd try at this point--the diagram is poorly done in my opinion. But the taps at the board are labeled as to color.
So figure a way to bypass the door safety, Get the blower running in heating mode (do NOT energize the blower by jumpering the green stat wire--that will put the blower into high speed/ AC mode
Find out which wire is being supplied. If you have a clamp on ammeter that will be easy. ALL the taps will show voltage as they are being backfed from the motor.
If you have the "guts" to do so, carefully pull a wire at a time off the tap rail until the motor stops. Then safe off that wire and swap red into that tap. Red is low speed.
Alternatively, you can try removing and taping all wires except red, and when the the fan delay is triggered in your estimation, try the red on each tap to see if it fires, or just go down the row with your meter. Then install red on that tap