I've got a dover solid state 3 stop installed in 1982. It runs up on auto and up and down on inspection. When it runs down on auto from 3rd floor it goes into high speed but when it comes off top slowdown it stops and immediately goes back up to 3rd floor. When it leaves the 2nd floor it comes off the up slowdown for the 2nd floor stops and goes back up. When the car goes back up to the floor it started at it re tries the run and it keeps doing the same thing. I've replaced all cards, Checked slowdown circuits, leveling circuits, and everything else all the way back to the pins on the back of the card slots. Voltages all check out and slots the cards slide into look good as well. Has anyone had a issue with these units that could give me direction to go in
