Err5 Error on Trotter/Cybex Elite, Sport and Pro Treadmills

Probable Cause

An Err5 error on the Trotter/Cybex Sport, Pro and Elite treadmills including models 450t, 500t, 515t, 520t and 530t indicates that no 0 switch was sensed within the timed limits. This is declared when the timed elevation reaches -2% without tripping the index. Following are the possible causes for an Err5 error:
a) Elevation motor needs callibrated
b) Lower board

Corrective Action

a) Perform the elevation calibration procedure.
b) Test the lower board; Replace lower board if necessary.