Horizon Sprint 8 speeds up at incline

Hello- searched the forum and online for anyone posting similar issues, but had no luck finding anything. Hope this isnt a repeat question for the board.

Purchased a Horizon Sprint 8. When setting speed (1.7) and increasing incline, the belt speeds up as I use and doesnt keep to any set speed at all, making incline worthless. Is this a typical issue?

Thank you for your time.



  • edited December 2021
    Clarification - unit is a Horizon 7.4 AT. even at lowest speed, belt just goes fast as incline starts. Display doesnt change, speed stays the same on display, but belt just starts running rampant.
  • Sounds like your motor controller has gone bad, they are $279.99 plus Shipping.To order please call me 888-362-1105 then enter Ext 331 and ask for Jim
  • Hey, thanks so much for the quick reply!

    Before I pull the trigger on this, let me ask- would this still be the case if the unit is controlling speed fine when the treadmill is at 0% elevation?

    Thanks again for your time.
  • Sounds like a short in the controller
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