So, after posting here I have been waiting to get a callback to this elevator but nothing happened. I went to the building two days ago for the monthly maintenance visit and it is running fine. The superintendent confirmed that it’s been running fine this whole time.

I am wondering if maybe removing the processor board and the EPROM and then re-seating the EPROM and re-installing the processor board was the trick. Maybe a bad connection somewhere. Just have to wait and see.

I checked the selector, shoes are in good shape, and the car does have around four inches of levelling into the floor.

Thanks very much for the replies and advice, I’ll update this thread if any problems come back.