The ProForm XP series includes several treadmill models, including the XP 690T, XP 615 and XP 580. All ProForm XP treadmills have power ramps that incline up to 10 percent. If your incline is stuck, you can first try calibrating it before contacting a service professional.
A treadmill is a complex piece of machinery with a lot of electronic and mechanical parts. Several factors could affect the function of the incline motor. The motor itself can stop working and need replacement. The gearbox in the motor could be jammed. You may need to replace the electronics board that powers your motor or the photo switch that tells the console the position of the incline. Figuring out exactly what is causing your incline to stick is a process of trial and error.
The first step is to recalibrate the incline. ProForm provides calibration instructions in the treadmill owner's manual. Hold down the "Stop" button and the "Speed" up button. Insert the safety key into the console then release the "Stop" and "Speed" buttons. Press the "Stop" button then press either the "Incline" up or down button. Wait while the treadmill raises then lowers the incline ramp. Press the "Stop" button and remove the safety key.
If recalibrating the incline doesn't work, you likely have a problem with the incline motor or electronics. Before looking at or working on any of these parts, first check to see if your machine is still under warranty. If it is, you may void the warranty by attempting to fix the incline yourself. The ProForm XP warranty period is typically one year, although it varies by model. Consult your owner's manual or the manufacturer if you're not sure if your treadmill is under warranty.
Icon Health and Fitness, the largest fitness equipment manufacturer in the world, produces the ProForm brand. You can contact ProForm customer service by phone, email or standard mail. The ProForm phone number for service inquiries is 1-888-533-1333. The official ProForm website provides an email template to fill out when requesting service on your machine.