Omar treadmill U_03 code is

Treadmill shows 03 fault code, which means that the motor speed cannot be detected and the protection stops. It should be that the speed sensor is invalid (broken), the sensor line is short-circuited (the mouse bit off the line), and the line needs to be replaced.

Solution: Open the front cover, unplug and plug in the yellow (or red) sensor connector on the fan blade at the rear end of the installed motor, and do a good job of cleaning.

If the boot is still the same problem, it is that the sensor is damaged and needs to be replaced. It is also possible that the plug of the treadmill is not plugged tightly. Open the cover and the plug is white.