Hello, the machine is Lift the Cab.

I continuos with this problem, when i move the ignition switch to on possition, the machine show the code 7., this code reffer to Electronic Sterring Controller A3. But the sterring system in the machine is Enable, but the auxiliary functions of hydraulics and traction systems is disable.

¿Is possible, the A3 controller is failed although the direcction is enable? or in the connection in middle of A3 and A2 controller is the problem?

Thanks you
Sorry for my bad english

BT OP is normally sold as a VNA truck.
If it was rail guided then there will be roller wheels bolted to the lower corners of the chassis to guide it along the rails in a narrow asile.

If it was wire guided then when you lift the cab there will be a big bar bolted between the front chassis legs with a wire guidance aerial in the middle of it.

Which ever of the 2 possible systems could be fitted means the truck can guide itself down a narrow asile without the operator touching the steering wheel.

Dont see many OP sold as free ranging trucks but yours could be.

Does it lift the cab / forks ok?

Hello, thanks for your answer.

I dont understand what is wire guidance or rail guidance, is possible you can more information of this concepts.

The machine some times show in the display the code 4. and H. you can know what is it?

The steering system of the machine is enable, is the only active function, but the traction is disable. Is possible the problem is located in the steering servo?

Thanks for your time
Sorry for my bad english

Error code 7 is.
7: The steering servo A3 is giving an error
signal. See error code on A3.

Is you machine wire guidance or rail guidance?