June 01, 2015

How to replace a treadmill motor controller

This DIY repair guide explains how to replace the motor controller on a treadmill. The motor controller runs the motor at the speed you select at the console. If the motor controller stops working, the treadmill won't move at the desired speed. Replace the motor controller with the manufacturer-approved replacement part.

This procedure works for common ProForm, Weslo, Weider, Lifestyler, NordicTrack, Sole and Horizon treadmills.

Quick links

Video

Instructions

Tools required

Work gloves

Phillips screwdriver

Repair difficulty

Time required

15 minutes or less

Replacing a motor controller on a treadmill

This video explains how to replace the motor controller on a treadmill.

Instructions

01.
Shut off the electricity
Remove the key and unplug the treadmill’s power cord from the wall outlet.
PHOTO: Remove the key.
02.
Remove the motor hood
Remove the screws securing the motor hood to the belly pan.
Pull the motor hood forward and remove it from the treadmill frame.
PHOTO: Remove the motor hood screws.
PHOTO: Remove the hood.
03.
Remove the motor controller
Disconnect the wires.
Remove the mounting screws.
Remove the motor controller.
PHOTO: Disconnect the motor controller wires.
PHOTO: Remove the controller mounting screws.
PHOTO: Remove the motor controller.
04.
Install the new motor controller
Position the new motor controller on the frame.
Reinstall the motor controller mounting screws.
Reconnect the wires to the new motor controller.
PHOTO: Install the new motor controller.
PHOTO: Reconnect the motor controller wires.
05.
Reinstall the motor hood
Slide the motor hood onto the frame.
Reinstall the motor hood mounting screws.
PHOTO: Reinstall the motor hood.
PHOTO: Reinstall the hood mounting screws.
06.
Restore power
Plug the treadmill into the electrical outlet.

Warning: Undertaking repairs or maintenance to appliances or power equipment can be hazardous. Should you choose to undertake repairs or maintenance, you are assuming the risk of injury to your person or property. In an effort to reduce the risk, use the proper tools and safety equipment noted in the applicable guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs or maintenance, however, should only be performed by a qualified technician.