Why won't my treadmill incline or decline?

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.

You've to check the incline and decline limit switches also the incline motor
If you wish to get some details about treadmill repair and service ; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

Sounds like the button on the panel is stuck somehow, I think this because when you switch the wires this would reverse the polarity to the incline motor.

can you tell if the panel is recognizing the pushing of the incline buttons, like with a beep or light or something? If it didn't seem like it's responding this may be because one button is constantly stuck down.

I expect there is a limiter switch that tells the treadmill when it has reached its maximum elevation. The switch is probably either malfunctioning or broke.

please RUN the software calibration for easy diagnostic and fix it.
Go under the HOOD motor, and see the steps or see the attached steps.
God bless you
The Steps for Newer Style Console Calibration:

1. Locate the calibration area on the rear or underside of the console (a hole, near the console's center, that goes through to the electronics board. (This hole should not have a screw in it.)
2. Insert a pencil (eraser end), into the hole and feel around for the cal button (will click when pressed).
3. Press the button 2 times (with the pencil eraser). The first click should show CL11 in the console, the second click should show CL21.
4. If the process was done correctly, and CL21 appears in the console, you are in "calibration mode." The next few steps consists of pressing buttons on the console and observing settings. This will not require any other tools.
5. Press ENTER. CL22 should display in the TIME window and (??) in the SPEED window.
6. Press ENTER. CL23 should display in the TIME window and (??) in the SPEED window.
7. Press ENTER. CL24 should display in the TIME window and (??) in the SPEED window.
8. Press ENTER. CL25 should display in the TIME window and (??) in the SPEED window.
9. Press ENTER. CL26 should display in the TIME window. You should then see the letter "E."
10. Press ENTER. You should see "SS" or "55" in the console.
11. Push the STOP/START button. For safety, at this point, you should step off, or be off, the treadmill.
12. Push the ENTER button. The walking belt should start to move, accelerate to maximum speed, then stop on its own.
13. When the belt stops, the incline should self test by raising to its highest incline position, then lowering back down to its lowest position.
14. Once the incline test is complete, push the POWER button 2 times. The unit should shut off and the console should go completely blank. If this happens, the treadmill is done calibrating and is ready for use.

If the letter "F" appears in the SPEED or INCLINE window when the power button is pressed 2 times, the treadmill is indicating a failure somewhere either in the SPEED or INCLINE (depending on the window the "F" appeared in). Troubleshooting the failure would be the next step.

1)LUBE THE DECK BELT, INMEDIATELY.
2) tES THE MOTOR INPUT VOLTAGE, IF THER ARE THE MOTOR NEED REPAIR.
3) tEST THE OUTPUT VOLTAGE BOARD, FOR INPUT VOLTAGE MOTOR, IF THERE ARE NOT THE BOARD IS FAULTY.

4) tRY TO RUN THE SOFTWARE CALIBRITATION.

SINCERELY.GOD BLESS YOU

I have a Proform ZT5 model - had the same incline/decline problem. It needed calibrated.
- unplug, turn off, and take the key out
- plug machine in
- turn switch on
- Pres and hold the STOP and SPEED UP button at the same time, while holding them insert the RED KEY
- let go of both buttons
- press STOP 1 time
- pres INCLINE UP 1 time
- this should reset it.

The tech on the phone mentioned the importance of turning the maching off, taking the key out, and unplugging after each use. Leaving it plugged in there is still an electrical current running and this can cause more seriouc problems that require a new control panel.

This sounds like the treadmill is running an incline calibration. It will run to fully inclined, then to minimum incline.
It should not do this every time you want to operate the machine, but they will do it automatically if the operation of the machine is stopped by the power being interrupted..

My wife had the same problem with her treadmill. I turned the beast on it's side, and unscrewed the plastic casing that houses the motor, computer, and all the electronics to the treadmill. I unplugged the incline/decline motor. Then on the bottom of the treadmill the long threaded rod that causes the incline needed to be moved. So I unbolted it from the catch, and manually screwed the rod back in with a wrench. Now the treadmill works fantastically, of course the incline/decline mechanism has been disabled, but I would rather have a treadmill with the incline disabled than have one always on 100% incline. Hope you found this helpful :)

Likely the cover of one of the motor brushes popped off. Unplug the machine before you pop it back in place, then try it again.

If that doesn't work, most likely it's the motor control board, or possibly the console, or finally just a loose connection behind the console.


But most likely, it's the motor brush cover. I've been seeing that alot with this model.