Potentiometer value for table longitudinal changes when there is control in the wrong direction.
If controlled, once movement has started the SCU checks whether the potentiometer value changes in the anticipated direction. If the potentiometer value changes in the opposite direction, this error is displayed. The drive is blocked until the system is switched off.
During or following the service action: Potentiometers, motors or breakers incorrectly connected.
Motor cable connection broken.
Service action: Connect the potentiometer / motor cables correctly.