CORRECTIVE ACTION: Reattach securely if needed.

Check that the console wiring is securely connected to the circuit board.

Verify that there are no lights lit on the lower circuit board.

CORRECTIVE ACTION: Reattach the connection securely if needed. Locate the male-female connection between the console and mast.Replace the console faceplate and replace the screws that hold the console electronics to the console housing.CORRECTIVE ACTION: Reattach cable securely if needed. Check that the console cable (a gray or black cable) is securely attached to the console circuit board.From the top of the console, gently lift the console faceplate and electronics from the console housing.Remove screws that hold the console electronics to the console housing.Wait 60 seconds, allowing lower board to discharge built up energy. For easier adjustment bolt access, remove the end caps. CORRECTIVE ACTION: The treadmill should be plugged into a 15-amp dedicated circuit by itself. Verify circuit is not sharing power with appliances, computers, TV’s, etc. CONTACT AN ELECTRICIAN TO VERIFY IF NECESSARY. If you find the belt is slipping because it is too loose, center it then tension as needed. Verify that the treadmill is on a dedicated 15-amp circuit. For a video on T101 Communication Cable Inspection, click here. Check that the console wiring is securely connected to the circuit board. Repeat if necessary, until the belt remains centered during use. Verify that there are no lights lit on the lower circuit board. Use the motor cover marking or part line as a reference for alignment.

If the running belt is too far to the left side: Using the supplied Allen wrench and with the treadmill running at 1 mph turn the LEFT adjustment bolt clockwise a ¼ turn and wait for the belt to adjust itself. Repeat if necessary, until the belt remains centered during use. If the running belt is too far to the right side: Using the supplied Allen wrench and with the treadmill running at 1 mph turn the LEFT adjustment bolt counter-clockwise a ¼ turn and wait for the belt to adjust itself. Do not run belt faster than 1 mph and keep fingers, hair and clothing away from belt at all times. Resolution This issue can be resolved by aligning/centering and tensioning the running belt. But if youve ruled out user error and the treadmill still wont turn on or doesnt work correctly, your Horizon treadmill may have a mechanical malfunction.

Horizon treadmill troubleshooting