Proform treadmill incline not working
I have a preform 400S treadmill that the incline just quit. One day I got on it, it was in the level 5 position, after I started the machine, it went to flat on its own and it hasn't moved since. I have replaced the incline motor with no luck and now I have replaced the board. No luck, it does nothing. I tried the incline calibration mode and when I push the + it does nothing.