What does error 29 mean on a precor C954i? - Precor C954i Commercial Treadmill

Precor Error 29, Excessive AC Input Current Probable Cause 1. The running belt and/or deck are badly worn.
2. Bad lower PCA.
3. Drive motor is shorted or de-magnetized causing a high power demand.
Corrective Action

1. Check the amp draw using a clamp on AC volt-amp meter during loaded and no load conditions and compare values to a similar treadmill that is known to have a good running belt and deck. Replace the belt and/or deck if necessary. Don't forget, some units have a double sided deck which means it may be flipped over rather than replaced if it has an unused side.
2. Test unit with a known good lower PCA. Replace lower PCA if necessary.
3. Test unit with a known good drive motor. Replace drive motor if necessary.