Usually when stuck at the max up position it indicates that you may need a new incline motor. It is not the sensor. I have been repairing treadmills for 15 years and incline sensors seldom if ever go bad. If can isolate the incline motor using a 110 volt power cord, this may un-jam the motor and get it back down to 0%. I use www.treadmillpartszone.com for parts.
If you wish to get some details; check the site linked here. Pull up older posts treadmill . Surf the site with patience.
http://electro-medical.blogspot.com/
If you wish to get some details; check the site linked here. Pull up older posts for treadmill . Surf the site with patience.
http://electro-medical.blogspot.com/
see the video and proceed according. Lube the rollers bearing front+back with silicon or wax( depend of your mark, model) read your owner manual.God bless you
Run the software calibration for easy diagnostic and fix it. Lube the incline mechanism. Go to Hood cover motor and follow the steps or read your owner manual.God bless you
* take nail polish or paint and place a mark starting on the front roller pulley and going onto the front roller metal shaft * then try to walk on it and see if the white mark separates * if it does then the roller is bad and would need replaced or tap screws placed through the pulley into the metal shaft to hold it in place * if it doesn't separate then the drive belt is slipping and most likely will need replaced, although you could try spraying belt dressing on it to see if that would be a temporary fix. * if neither of these is your problem and the walk belt is slipping then you will need to try to adjust the screws in the back of the treadmill through the end caps. these are allen wrench screws. Tighten each one the same amount such as 1 full turn to start with. see if you can now walk without it slipping. If not then tighten 1-2 more turn on both sides. If after 2-3 full turns it is not tight enough I would recommend replacing the walk belt.
