I’m having a very intermittent problem with the car faulting out on a safety fault (F6) but have physically checked all safety devices as well as replaced the IO board and relays twice. Smartrise has not provided much help saying it is difficult troubleshoot such an intermittent issue. I have spent many hours on site running the elevator for hours with out it shutting down once. It a very odd issue and I think it might software related. Thanks