Incline raises full and wont go down,t84

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.

This sounds as though the motor is bad, they cost around $130.00, ther is a n electronic controller that controls it, but as it is trying to raise I would think that the switch and controller are functioning. Best of luck and please post back f this helps.

Please RUN The software calibration for diagnose, troubleshooting and fix it.
download your inst.manual from www.iconservice.com or www.fitness.manualsonline.com and proceed according

God bless you

1) Lube the elevation motor, see the diagram, parts gear + shift
2) adjust the POT, for a little and see if there are better improve.
3) RUN the software calibration for diagnose, troubleshooting, fix it.
God bless you

RUN THE SOFTWARE CALIBRATION FOR DIAGNOSE, TROUBLESHOOTING AND FIX IT.

2) you can lube the gear, shaft+ adjust the potentiometer+see the relais contact are clean it.

sincerely. God bless you

Watch the videos:
http://www.youtube.com/watch?v=TquYcOzGIw4&feature=related
http://www.youtube.com/watch?v=9G4MZh8JO2Q
http://www.youtube.com/watch?v=M7qJrRbdfBc
http://www.youtube.com/watch?v=MIIxoPtvhy8
hthttp://www.fixya.com/support/r10724803-measure_voltage_in_transforme_fitnesshttp://www.youtube.com/watch?v=bF3OyQ3HwfU&feature=related
Watch the block diagram, main controller board ha 90% aprox of functions of the treadmill. sincerely.

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.
     

Remove the water tank and look or feel up to where the float is at and see if it is stuck in the raised position. This is what is keeping the light on and not letting the compressor start.

Take the cover off and inspect the wiring. Make sure all the wires from the incline motor are connected.
If all the wires are connected and everything looks OK, try the incline again.
There are only 3 wires on the incline motor, red, white and black. This machine does not rely on any electronics to operate the incline. We know the motor works, because it will go up..Likely the switch in the console is defective.
To lower the incline, reverse the black and red wires, that will make up go down and vice versa.. If that doesn't work, the motor is likely defective.
The incline motor is available, around $110. To order find the model number on the frame of the treadmill and call the service number found there. Have your model number ready (starts with "P").
The console is no longer available.

Merit 725T. The treadmill has gone into a "10 degree" incline mode on its own, and will not respond to the control panel