Thanks for the information. Earlier, I changed the potentiometer and set it with an ohmmeter in the middle and the error 28 (KO steer sensor) was still displayed. The wires from the potentiometer to the inverter are good. In addition, the forklift has a limited speed (as if it were riding a turtle) and the microswitch does not activate the second and third sections of the control valve (the wires are also good). I wonder if the forklift will behave like this if it is in safe mode. Maybe the inverter zapi logic broken?
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.