Are you able to do a vane reader check?
It passes 4, stops at 5 then goes down to 4 to answer the car call. So the call sounds like it’s latched in the cars system, but doesn’t see it traveling up. What about from 5 down, does the call at 4 get answered normally?
New smoke detectors. Is the main recall floor wired for alternate floor recall?
Do the Miprom parameters for Fire Main and Alternate match what the new detectors are programmed to do?
And if they don’t work properly, and the building is occupied, you’ve got a real problem on your hands.