The reason for this condition is that the motor on the hopper cannot get enough power or has lost the encoder signal

• Incorrect calibration of crop check and Recalibrate
  
• Power supply. Check battery terminals on the tractor. Clean if necessary.
• Check all wiring for damage and for incorrect amperage cable.(12vdc 50amp cable should be used. (6mm))
• Check all connections and spade fittings.
• Check flat plug for connections across cable with test meter.(ver 2.40)
• Check “euro” or “D’ plug internal connections where it is plugged into the tractor.
• Check that the jumper connection on the I/o board has connection, remove jumper clean the pins, replace the jumper put the controller into diagnostics and test the motor rpm.
• Check the 7core cable for damage.
• Check that the encoder wires are connected