Own a Nortic Track apex 4100i. Great treadmill.

1) Faulty sensor speed try to adjust it face to face magneto motor
2)Sensor speed try to tight the connector very well.
3) Replace if neceesary.4) Main motor faulty or burn. Test 115vac for input measure without load fore easy running.
5) Test the main motor controller board for 115vac input and output for +5VCD,
6) Adjust the deck bel for 2-3" for lift max.
7)Lubricate the deck bel.
8) Test the transformer for input and secondary voltage.
See the block diagram for illustration how the main motor controller has 90% aprox of function of any treadmills.

sincerely. Merry Christmas.

ernesto cuadra
managua, nicaragua. c.a.

hi,
To adjust the treadmill belt just watch the following video. It will help you for the same.


ok

Sorry to inform you, that part is no longer available from the manufacturer.

You can try and do a re-calibration on the treadmill (Its listed in the Users Manual) but it sounds like the console has gone bad. To repair this you would have to replace the entire console.

hold down stop and speed + then put safety key on
hit stop once
push incline+
let it go up and down
take key off and reattach
try
if it still doesn't go the incline motor is bad

You can purchase this item at iconfitness.com go to customer service click on to part replacement parts input manufacturer then model name it pop up 17 matches, but they all use the same diagram number and that is number 105, part number is 151071 price $11.81 each

If the console lights up but the buttons don't work, then unfortunately it's probably the console and they're not repairable that I know of. You may want to check the wiring harness and the connections at the console and at the controller under the motor hood. Pull them apart and check for bent pins. If they look good, the console is most likely bad.

try caibrating it.

Go to Nordiactrac.com and enter your Model number from the sticker on the frame. It should read NTL or NTTL then 4 or 5 number. Folow the instructions and ask for the Part's List. You should be able to find it there.

Is there a sheet of paper under the motor hood? It has the procedures for this calibration of the motor speed. Caution ! You should use a plastic screwdriver to make adjustment to the speed control on the motor controller. It is high voltage