I have an intermitten issue, this is a 4 stop duplex with basment operation. This is only happening on 1 elevator, on a down hall call the elevator will get to the floor open the doors and sit there with the doors open like is as stuck button. "Dhst "is not dropping out which leaves "xhst" up which leaves "nt" up which is what is keeping the doors open. I am having aa hard time figuring my way threw the "dhst" circuit to ground to find out what is keeping everything up. Again only happens on one of the cars, and it may run 8 to 20 times before it fails.
