How do I get incline to go back down manually
Hi Holly, please let us know what model of treadmill you have. Basically, there should be a 3-pin connector from the lift motor to a 3-pin plug, with rather large pins, near a couple or Triacs (Transistor looking things) that are bolted together. If you find this correct, you can turn off the treadmill, carefully reverse this cable 180-degrees, and theoretically you will be driving the opposite winding of the one causing you to lift incorrectly. This only gets the deck back down, and won't stop your troubles, as the assembly will now be trying to drive the lift down.
There can be a few causes...
1) "Up" lift button stuck
2) console electronics gone haywire(unusual)
3) lift assembly feedback lost, missing, incorrect(bad lift)
4) failing control board Triacs(either/or failing causes trouble)
Lasstly you can contact jatinah electronics for additional help. Good Luck!