You need to go into the dash display and look for fork height after you find fork height hit horn button this will show you the fork height when truck restarts as you lift you can watch to see if encoder is counting correctly if not remove from pulley it is held in with Allen set screws and see if you can manually turn the encoder to see approx 2 in display if counting off replace with new to install just go back in dash and do the same when you manulley turn to see about 2 for fork height reinstall in top pulley and tighten and watch as you go up to make sure it is working but you must go into program to do this

was there a resolution for this issue? im having the same problem

Buenas tardes, quisiera saber si pudiste encontrar la solución a tu problema, te cuento que tengo le mismo problema en mi montacargas.

You can check the encoder by taking voltage readings at the encoder plug. You should get 5 volts across the supply and negative. Test from negative to one of the signal wires you should see a toggle on/off. Have you checked to see what the height indicator shows on the display? If it is showing max lift height you need to unmounts the encoder and rotate it so it shows full lowered.