Last night the LZV100 seemed to work properly for a short while.  I turned on the power and the LH100 and LH90 blinked "Off/Stop" (it hasn't been doing that).  When I pressed the emergency stop button to start up, things worked fine until the first time a short occurred (a freight car derailed on a turnout).  When I reset, things stopped working.

I recall that under normal conditions, the system is in emergency stop mode with the handhelds flashing on startup.  Is that correct?