I'm seeking assistance with an issue on an old Westinghouse duplex elevator. One of the cars is failing to open both the front and rear doors when responding to car calls only. However, the doors do open from hall calls.
This particular elevator is the only one with both front and rear doors being used exclusively for the 1st floor landing. All other floors have inline front entrances.
When a car call is pressed, the elevator travels to the selected floor, levels, and stops, but the doors remain closed. (Door Open button does).
It appears that relay 45 or 45R ("Master Door Control"), depending on whether it's a front or rear call, never drops out, preventing the door open relay (44 or 44R) from activating. I find it odd that this issue is with both entrances so I'm looking for something in common between the front and rear doors that would prevent both from opening.
Any help would be much appreciated.
