From the manual.
FE52, Tilting potentiometer wire breakage
The two values of the setpoint potentiometer for DS/LS tilting (arm 1 and arm 2) are outside the monitoring range of 8.5 - 11V on addition.
Check the wiring between the potentiometer and the LAS module. If this is OK, replace the potentiometer or lever.
The tilting function is blocked.
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