The unit only runs from the hall on access (with the LADS bypassed), not when all doors are closed (MRI). I wonder if there is an issue at the access key switch or the interlock wires are swapped and some sort of safety redundancy circuit is catching it. I don't know much about that CIO testing. Did this issue just suddenly occur do you know? And the resetting...is he using the two SW (2&3?) button commands or simply the "reset" button to try to clear the fault? Just asking.