? does this lift requires a service tool...so you can check if you missing a floor count also ,what type of sensors your using ..my guessing you are using type u sensors since is from spain or bistable switch..also do you have information on that lift ..like diagrams manual etc.. what I would do y friend is hired a tech from that company who installed that lift and pay them to fix your problem...that way your client will be happy and you wont loose that account ...best luck
