I have an Otis 211 hydraulic elevator that is currently in the pit with a readout of STLU on the display in the controller. Even though the safeties and door circuits appear fine it will not run up on inspection. I have been told that I need to do a hard fault reset in the controller to get the elevator to move. Does anyone have information on how this is done? I would also appreciate any input if there are other ideas as to what may be wrong with the elevator.
