I had the same problem with a triplex fst2.
Somehow I turned off the doors in the controller 😊

It has nothing to do with the HCC switch on the controller this is a different problem I already went thru all that. This should be something related with the landing system or the door open circuit because the dispatcher order the elevator to go where the push buttons are calling. THe problem is that the elevator DOES NOT OPEN THE DOOR. Any ideas are appreciated.

Check ur DO1,DO2 ,DEB, DE, relay contacts one of those contacts isn't making up correctly , if I remember correctly is contact 5 to 6 in DO1, but the work together so once u go true all of them u gonna get ur car door to work properly

Now here is my problem : equipment from 1970 -4 cars with a single dispatcher , car 1 , 2 , and 4 are working in a different way , they have to reach top or bottom floor to change direction , another words if u take the elev on the 5th fl trying to go down to the lobby , the car have to go all the way up to the top landing -does stop in the top floor but car door doesn't open stay there for 3 seconds and then goes down to answer ur call or any other one in the down direction hall or car station call, I don't have the prints is kind of hard to hit the problem cuz u need to check the cars operation after each adjustment and without prints is going blind !!😠😳 any ideas or experiences are welcome

Check with [email protected] for prints... If he doesnt have them try Electrodyne