During the work of finding the parasitic draw, the electrician may have disconnected the battery. This disconnection would have made your auto windows motor forget where the glass is. Also the clock will need resetting and maybe the radio presets too. In some cars the radio needs the security code re-entered. So when the electrician is saying he did no work on the window system, he is right.
Just a side note, my Toyota Passo needs 20 sec hold of the button. You might try a longer duration in the up and down position.