CLAAS A09Ah: Problem with 4 Valve Control

The 4 valve is not responding correctly to control commands. The drawer moves in the wrong direction, and the valve returns to neutral. The error can be cleared, but if it reoccurs, the 4 valve may need to be replaced.

1. 1

   The operation of the 4 valve under command

2. 2

   The direction of movement of the drawer in response to control signals

3. 3

   Whether the 4 valve returns to neutral as described

1. 1

   Clear the error

   Follow the procedure to clear the fault code as specified by the system.

2. 2

   Monitor the system

   Observe whether the error reappears after clearing.

3. 3

   Replace the 4 valve

   If the error reoccurs, replace the 4 valve as indicated in the source.