If you need to reset your Horizon T202 treadmill, there are a few things you'll need to do. First, unplug the power cord from the treadmill. Next, locate the reset button on the control panel. It may be labeled RESET or have a picture of a reset switch next to it. Press and hold this button for at least three seconds. The display should then show 0.0. Finally, plug the power cord back in and press the start button to begin using your treadmill again.