F14 Prepress backwards when main press is running forwards

Possible cause:

All solenoid valves are de-energized.
The prepress has moved backwards and left the front limit switch as the main press advanced. This occurs when the press is overfilled.
This error can occur in automatic mode only.

Rectification:

Switch off the conveyor system, reverse the main press and allow the prepress to reverse by approximately 0.5 meters. Allow the prepress to advance again and run the main press forwards.
Automatic operation. Moving parts (3, 14)