Hi,

C30= The load on the forks has exceeded the truck's classified lift capacity. / Ensure the load to be lifted does not exceed the classified lift capacity
Check that lifting is not performed against the mechanical stop.
This applies to both fork lifting and support arm lifting.
Ensure the mast sections and lifting chains move freely
Check pressure sensor o/p [B1:INP.PRESSURE LIFT] voltage ≈ 0,5V with no load & lowered forks / support arms
Perform a Max. load calibration