Fendt A.1.1C – ELECTRICAL VALVES VALVE 1 / VENDI: Y015 - Spool valve fault, valve 1 — Floating position has been set manually

Triggers when the system detects that the main piston of Auxiliary Control Valve 1 has been moved into the floating position via mechanical/manual override rather than through an electronic command from the tractor's controls.

• 409 Vario
• 410 Vario
• 411 Vario
• 412 Vario
• 711 Vario
• 712 Vario
• 714 Vario
• 715 Vario
• 716 Vario
• 717 Vario
• 718 Vario
• 916 Vario
• 920 Vario
• 924 Vario
• 926 Vario
• 930 Vario
• Farmer 400 Vario series
• 409
• 410
• 411
• 412
• Favorit 700 / 700 Vario series
• 711
• 712
• 714
• 716
• 718
• Favorit 900 / 900 Vario series
• 916
• 920
• 924
• 926
• 930
• 800 Vario series
• 815
• 817
• 818
• 300 Vario series
• 500 Vario series

1. 1

   Verify if the operator manually actuated the spool valve lever for Valve 1 (Yellow) to release pressure or drop an implement. If so, clear the code; no repair is needed.

2. 2

   Inspect the external fender pushbuttons for Valve 1. A stuck, dirty, or shorted external button can send conflicting signals to the valve bus.

3. 3

   Check the manual actuation mechanism on the Y015 valve block. Look for dirt, debris, or corrosion that might be causing the manual override pin/lever to stick in the actuated position.

4. 4

   Check for hydraulic oil contamination. If the spool is sticking internally and failing to return to neutral on its own, contaminated oil may be the cause.

1. 1

   Access the Valve Block

   The central control block (ZSB) is typically located on the right side of the tractor. You may need to remove the right entrance step or the side access flap to reach the valve stack.

2. 2

   Locate Valve Y015

   Identify Auxiliary Control Valve 1. Fendt color-codes this valve Yellow (Position 1).

3. 3

   Clean and Free the Mechanism

   Thoroughly clean the exterior of the Y015 valve. Lubricate the manual override mechanism and actuate it several times by hand to ensure it springs back to the neutral position freely.

4. 4

   Clear the Code

   Turn on the tractor, navigate to the fault code menu on the Vario terminal, and clear the stored A.1.1C code.

5. 5

   Test Operation

   Operate Valve 1 using the joystick/fingertip controls. If the valve works normally and the code does not return, the issue was a stuck manual override.

6. 6

   Replace Valve (If Necessary)

   If the code immediately returns and the valve forces itself into neutral, the internal position sensor is likely faulty, or the main piston is permanently jammed. The Y015 valve section must be replaced.

7. 7

   Reprogramming

   If a new Y015 valve is installed, it must be registered to the CAN bus and programmed for Position 1 (Yellow) using the EOL (End of Line) program in the FENDIAS diagnostic software.