2907 is pointing to a low speed UCM event. The controller is seeing the car move more than 6” from a DZ while the doors show open.
I would expect to see some other faults with this fault. How old is this car? How do the belts and sheaves look?
The Fire service issue could be a clue to something also but I’d assume that was the building trying to recall the cars? You can check OCSS logs of the other car to confirm that.
If your confident it’s not a door issue, you can try making the car park at a different floor or even remove the problem floor from the CUDE mask temporarily to see if your issue moves or goes away.
