Pin of the second extruder is in place of the fan
I have a BIQU KFB2.0 controller and I use the repeater
so when I turn on the second printer it's in the Fan's place.
How do I swap the heather01 Pin and get it out of the Fan and make the Fan run on the Repetier?
In config tool you can always also select the exact pin number instead of the symbols defined in pins.h. Especially if you have a "compatible" board using different pins or having extra pins. Don't know this board, but that is the easy solution that will work if that is the only problem.