Question about Exercise & Fitness

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Treadmill wont speed up

It only runs at about .5 and will not increase the speeds. console says it is increasing but belt doesnt run any faster

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  • Karen Pariseau Jan 09, 2013

    Thank you but I should have said my smooth 9.1p is 12yrs old!.

  • Karen Pariseau Jan 09, 2013

    With a very obsolete board.



1 Answer

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  • Master
  • 12,223 Answers

RUN the software calibration for diagnose, and fix it.
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.

  15. 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.

treadmill wont speed up - 1_8_2013_7_12_16_pm.gif

Posted on Jan 08, 2013


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Posted on Jan 02, 2017

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SOURCE: my proform 520 runs at high speeds & speeds up on its own


This seems to be an issue with Signal Generator.If you have a problem with the signal generator, your speed will be erratic with either a person on the machine or without a person on the machine. You may even get a speed error code from the unit.

The procedure to check the same is :-

Let me know, if need further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Oct 12, 2009

  • 832 Answers

SOURCE: Speed indicator and belt problem

Under the motor hood by the front their is usually a speed sensor either not working or not adjust close to pulley where magnet is locate in , when it passes by the sensor it should read it.

Posted on Feb 28, 2010

  • 1 Answer

SOURCE: Thumping noise that increases with speed

open motor shroud on a nordiktrac

Posted on Mar 13, 2010

  • 832 Answers

SOURCE: speed sensor error

Your speed sensor may have failed and cause this condition Call Accell Fitness Of North America @ 1-888-388-6887 they are the Tunturi Distributors

Posted on May 06, 2010

Andriod Man
  • 271 Answers

SOURCE: My proform 590 treadmill has

simple(maybe). go to the rear of treadmill,get the allen wrench that came with it,run at med-slow speed and adjust the rear roller with allen wrench. 1 turn per side 2 or 3 time then walk on belt until wont slip. all the problem is belt tension. also. make sure if it need lubrication under board and belt(some are lubless others dont).

good luck to you.

Posted on Feb 08, 2011

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Related Questions:

1 Answer

Why wont it run?

Is the motor running? If not, is it receiving power? Is the belt slipping? If motor has brushes, they might need replacement.

Nov 18, 2015 | Nordic Track APEX 6100XI TREADMILL Console


OS or O5 Error on Landice L-Series Treadmills

Probable Cause

An OS or O5 error on the Landice L-Series treadmills, such as the L7, L8 and L9, indicates an over speed condition and this occurs when the actual speed of the running belt is faster than the set speed. The possible causes for an overspeed, OS or O5, error are: A) User weight is over 200lbs, treadmill elevation is set between 10% and 15% grade and speed is set between .5 mph and 3 mph
B) User is pushing against treadmill belt causing it to go faster than the set speed
C) Defective lower board or misaligned speed sensor
D) Maladjusted speed potentiometer

Corrective Action

A) Gravitational force will enable the user's weight to move the treadbelt faster than the set speed. The speed sensor will pick up this increase in flywheel speed and sends this information up to the display electronics. The microprocessor will then compare the actual speed to the displayed speed, determine a runaway speed condition and shut the treadmill down. An overspeed will display in the window. This is a safety feature built into all treadmills that utilize closed loop speed circuitry. The way to address an over speed condition due to gravity is have the user decrease elevation below 10% or increase the speed.

B) Similar to the gravitational force, a user can be holding onto the handrails and pushing the running belt in such a manner where they are using the treadmill like a manual machine rather than a motorized one. User needs to set speed compatible for their actual walking or jogging speed so they are not pushing the belt.

C) It's possible a blown motor control board is the problem. This occurs more frequently with PWM drives than SCR drives. However, this problem is becoming rare due to the PWM circuitry which senses this condition and shuts itself down before the drive motor receives any DC voltage at all. This means you'll get an LS or L5 error if your PWM is blown, not an OS or O5 error. This is a safety feature on all Landice home treadmills with PWM motor control boards. The SCR motor control boards also have internal protection to prevent an over speed condition from occuring due to an internal component failure. In the rarest of cases, on home treadmills, a faulty relay board can cause an OS or O5. To verify this, using a digital voltmeter, with treadmill turned on, measure the DC voltage between the V+ and P1 on the PWM board. The reading should be between 6-7 VDC. Also measure the DC voltage between P1 and P2 on the PWM board. The reading should be between 0.5 VDC and 6-7 VDC. If either of these voltages measure zero, replace the relay board.

D) Get into Open Loop Speed mode and check the speed. Adjust pots as necessary to bring up correct speed for max and min.

on Apr 10, 2015 | Landice Exercise & Fitness

1 Answer

X3 goes faster that set speed on incline

Run the software calibration for easy diagnostic and fix it.
God bless you

Jul 09, 2013 | Exercise & Fitness

1 Answer

Power is on, motor doesnt run

1)Lube the deck belt with 100% silicones or wax follow the instr. manual
2) Lube the rollers bearing with wd-40
3) Test the drive belt motor,for worn and replace if necessary
4) Test the input voltage motor, if there are the motor need repair.
5) Test the output voltage board, for input voltage motor, if there are NOT the board is faulty..
God bless you


Dec 05, 2012 | Proform 860 Competitor Treadmill

1 Answer

I have an E-4 sign coming up on the treadmill. I still dont have a clue how to calibrate it or anything. i bought it over the internet and there was no instruction manual that came with it. i really need...

Dear Sir:
This is guide for software calibration in Horizon. Please see under your Hood for motor the instruction for step in calibration.
Turn the treadmill power to "On." Place the safety key in its place on the treadmill console.

  • 2 Simultaneously press and hold the incline "+" and speed "-" buttons for approximately five seconds: The console will beep and display the software version in either the "Time" window or the "Calories/Elevation" window.
  • 3 Press "Start" and allow the running belt to begin moving. The belt should start at 0.5 mph. If this speed is not the speed your treadmill starts at, adjust the speed cube screw located under the control board. Turn the screw to slowly to the right to increase the speed or slowly to the left to decrease the speed.
  • 4 Verify this speed is correct by counting the running belt revolutions per minute. At 0.5 mph, the running belt should make four revolutions in a minute for the Alpine and Advance 500 models and four-and-a-half revolutions for all other models.
  • 5 Press and hold the "Stop" button for three seconds to exit the engineering menu.
  • sincerely. God bless you.

    ernesto cuadra
    managua, nicaragua. c.a

    Feb 11, 2012 | Exercise & Fitness

    1 Answer

    Treadmill Speed Increases on its Own

    Test the speed sensor with a meter. If that tests ok then you will need to replace the motor controller and walking belt.

    Sep 05, 2017 | Exercise & Fitness

    1 Answer

    My proform 590 treadmill has these problems ; belt slips when running or walking ,speed goes up and down does not stay constant and you can hear motor noise increasing and decreasing in motor what should...

    simple(maybe). go to the rear of treadmill,get the allen wrench that came with it,run at med-slow speed and adjust the rear roller with allen wrench. 1 turn per side 2 or 3 time then walk on belt until wont slip. all the problem is belt tension. also. make sure if it need lubrication under board and belt(some are lubless others dont).

    good luck to you.

    Feb 08, 2011 | Treadmill Doctor Proform 590Qs Treadmill...

    1 Answer

    I have a proform xp 550e trademill and i changed the motor control board because the motor start running and inmediadlly stops. after i installed the board the motor start running and stop some time after...

    To calibrate the speed follow these steps.
    Press stop and speed up and place the safety key in its spot.
    release the stop and speed up.
    Press stop again. The windows on the console (speed & time) will be all zeros.
    Press speed up, the time window will increase. The belt should start to move. Increase this number to 85. This is maximum speed. Adjust the potentiometer to the correct maximum speed. The console will beep until the correct speed is adjusted (+ or - .2mph).
    If the machine suddenly goes dead when in use, you may have a static electricity problem.
    Check that the ground pin is present on the plug and check your outlet for a proper ground connection.

    Dec 29, 2010 | Proform Exercise & Fitness

    1 Answer

    We have a 600 mx and the pad is not working, the only button working is the start, i cannot increase speed or incline it either.

    It is very unusual to have no incline or walking belt operation..
    Try entering diagnostic mode and do a calibration. The instructions are found under the motor cover on a tech sheet.
    1: with the safety key removed, press stop and speed up simultaniously.
    2: Attach the magnetic safety key.
    3: press stop 1 time.
    4: at this time, by pressing the incline up, the incline should calibrate, going up to maximum then back to minimum..
    5: press the speed up key, you will see the numbers on the console increase. The machine should start moving the walking belt around 25-30 on the display. At 85 the belt should be running at maximum speed.
    6: press speed down, the machine should stop.
    7: remove the safety key. Now replace the safety key and try the machine again.If any of this procedure didn't work, I would suspect a defective console. Otherwise, the motor controller may need replacing.
    Good Luck

    Dec 14, 2010 | Epic 600 Mx Treadmill

    1 Answer

    My ProForm 750 only runs at low speed. Varying

    If u r seeing the increasing variation takeing effect on the panel but the speed does not increase in real, then there is nothing wrong with the push button for sure.
    what it could be is ,
    1. Your motor is getting overheat quickly and does not accept the higher speed commands.
    2. it could be a belt slip also (do u hear any extra noice / vibration when u increase speed)
    3. next time, pls unplugg the unit for atleast 4 hrs and when u start after that increse the speed very next moment and see if it works. if it does increase this way then it is time take look first on the belt ans then check the motor.

    Good luck.

    Jul 25, 2010 | Proform iLog 750 Treadmill

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