Have you replaced the DZ modules? LVE module? The faults seem to be DZ related.
Also check DZ wiring at the controller terminals (they can magically become loose) and on the car top.
I’m not sure of the color changes you mention, but with the RVU set up to catch any of those faults, you might see a logical reason for it as you scroll forward and back. When the RVU screen goes RED let’s say on the 104 fault, is that when the COMM etc LED’s go YELLOW?
Out of Service with doors open typically means an error has occurred three times within a predetermined amount of time, so the car goes SRVPROT to take it out of the group.
You’ve got original prints?
