Working on a Dover WCR. Car runs fine and operates normally. If you give it an up and down corridor call it will cancel the first call but will keep door open and hang up on the 2nd call removing it from service? Will do this on any floor and is a newer job just took on service. Any Dover guys have a direction to look too?

I'd look into the car stop (CS) relay circuits

Just went through a number of problems on with not canceling an up hall call,opening the front door on the rear floor, and door open timer bad. Had to change the 1a2 relay, 2u1,2u2 relays. Could be something in the hall call circuit, maybe cs or cc I forget the the other 2 but they have black coils. Gets some relays and and start swapping. Check new relays before installing because I got burned on one,also be careful removing and look at the base for broken connections on front and wires on back.