How can i fix my sprotcraft TX400 treadmill?

Error 4 and the treadmill stops. Any idea how to fix it?

Dave

Dave
March 2009

You are right Kathy. You gave me an idea about the sensor. I find it completely dirty. After cleaning it, it worked correctly.
Thanks for you all.
Sal

Sal
February 2008

Thanks for your answers (Kathy and Mark Peterson), I tried what you said but no things happened, my treadmill still not working.
Sal

sal
February 2008

you need to adjust the speed sensor, it is next to the pulley wheel, it should be no more that 5mm from the magnet, which is the width of 2 nickels.

Kathy
February 2008

I want you to start your treadmill again. This time I want you to start pushing the belt before you start the treadmill.
If your treadmill starts picking up the speed of your push you may have a blown lower board not sending voltage to your motor. You are now the motor. Stop pushing and you should get an error code.
That's step 1

Mark Peterson
February 2008