Fault Phenomenon: Bomag BF800C paver after activating automatic leveling, the screed does not adjust following the reference.

Troubleshooting Process:
– Checked sensors: tilt or ultrasonic sensor not connected.
– Checked solenoid valves: leveling proportional valve coil open circuit.
– Checked power supply: leveling system fuse blown.
– Checked mode: not switched to automatic mode.

Root Cause: The proportional solenoid valve coil for the automatic leveling system is burnt, unable to receive electrical signals to adjust the cylinder.

Required Parts: Replace leveling proportional solenoid valve coil.