One of our units (Gas turbines) which is having Mark Vie control system (it was upgraded last year from Mark IV) is under shutdown now.
Recently we did a small modification in logic (changed one input from used to unused only), then we made a download command then we got some diagnostics alarm for one PDIO Pack:
"Contact Input () not responding to self test mode"
As per manual and Toolbox ST help, solution for this alarm is to replace the I/O Pack, and we already did but problem was not solved.
Moreover we got new diagnostic alarm for all modules which is:
"Configuration mismatch with auto reconfiguration server"