My Nordictrack t7.0 belt won’t move. Turns on, inclines but the belt don’t move. It just beeps and goes up and down but doesn’t move. It seems like the start button doesn’t do anything.

This seems abnormal. These machines seem to have an intermittent diagnostic that they run which includes (or simply consists of) raising and then lowering the incline or slope. If this process seems to hang or the machine never returns to "normal life", you may have to call your service number.

Likely your incline switch is jammed or defective. Could also be that the panel circuit is defective and needs replacing. This panel circuit would need to be removed and tested to pinpoint the exact issue.

You probably pinched some wiring during assembly. Could be the controller but more likely the wiring.

do you hear the motor running but the belt is not? if it is the belt need tightened or the drive belt may have broken. remove the motor hood to inspect

How to Troubleshoot a Nordic Track C2500 X Jolie Johnson

Based in Austin, Texas, Jolie Johnson has been in the fitness industry for over 12 years and has been writing fitness-related articles since 2008 for various websites. She received her Bachelor of Arts in English and philosophy from the University of Illinois.
By Jolie Johnson, eHow Contributor

updated April 15, 2011

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The NordicTrack is a treadmill designed for in-home use. It offers a speed range of 0 to 10 mph and an incline range of 0 to 10 percent. It folds up vertically to save space when you aren't working out and can be rolled to a different room. The console has 16 preset workout programs and features iFit interactive technology. If you have problems with the console or walking belt, you can often fix them yourself with some basic troubleshooting steps
Instructions

1. Power Turns Off When You're Using the Treadmill
   • 1 Check the reset switch on the bottom of the treadmill near the power cord. If it has tripped, the top of the switch will protrude. Wait 5 minutes then press the switch.
     
   • 2 Check that the power cord is plugged in completely. If it is plugged in, unplug it, wait 5 minutes then plug it back in.
     
   • 3 Remove the magnetic key from the console then reinsert it.
     
   The Console Won't Turn Off
   • 1 Insert the magnetic key into the console. Your C2500 is stuck in demo mode if the console won't turn off after you remove the magnetic key from the console.
     
   • 2 Hold the "Stop" button down for a few seconds.
     
   • 3 Press the "Speed" down (-) button. Remove the magnetic key.
     
   The Incline Does Not Change Correctly
   • 1 Press and hold the "Stop" and the "Speed" up (+) button. While holding the buttons, insert the key into the console, then release the buttons.
     
   • 2 Press either the "Incline" up or down arrow button. Wait while the incline raises and lowers. This recalibrates the incline system.
     
   • 3 Remove the key from the console.
     
   Walking Belt Slows
   • 1 Unplug your C2500 and remove the key from the console.
     
   • 2 Turn both rear adjustment bolts, located on the back of the walking deck, to the left, a 1/4 turn.
     
   • 3 Lift the edge of the walking belt in the middle of the deck. You should be able to lift it 2 to 3 inches off the walking platform. If the belt is still too tight, loosen the bolts another 1/4 turn each.
     
   • 4 Plug the treadmill in and reinsert the console key. Walk on the belt at a slow speed to see if it still slows. Repeat Step 2 if necessary.
     

Manual with troubleshooting guide
https://www.sportsmith.net/images/product_support%5CNordicTrack%5CNTL10850%20-%20NORDICTRACK%20A2050%20TREADMILL%5CNTL1085.0-214878.pdf

https://www.justanswer.com/fitness-equipment/3tp0k-nordictrack-a2050-treadmill-just-recently-won-t.html


https://www.youtube.com/watch?v=Lx9zhfXok2A
https://www.sportsmith.net/images/product_support%5CNordicTrack%5CNTL10850%20-%20NORDICTRACK%20A2050%20TREADMILL%5CNTL1085.0-214878.pdf

it is trying to calibrate itself, let it go the whole way up and then down without interrupting it. Then it should be fine.

the motor controller is bad and needs replaced

I had the SAME problem, several time, with my NordicTrack A2250 Treadmill.
Allow it to go fully up and then fully down several times, without turning it off. IT seems to "cycle" that way 3 times and then "reboots" itself and starts working normally, again.
I had to figure this out myself... none of the suggestions I read worked.

Will the treadmill work when the chip is not plugged in, or does it just beep every time you select a button? If so, your problem is easy to solve. The board that supports the two adjacent up and down buttons has slipped. To fix, you'll need to remove the panel and remove the 3-inch retaining bar which is held in my two screws. Realign the board so the buttons are free to move in the available slots. Good luck.