Steris V116 S2 failed to engaged.
Did you call tech service at Steris. They can sometimes be helpful depending on who answers the phone.
only reason I ask is if you give them serial number they know what build you have. I was assuming there was not a boiler on this unit.
Sounds like a fuse on your I/O board, not sure which one, but just go through all of them by doing a continuity test on them. Like one of the guys said, if your door is not sealed with S35, then S2 will not activate, and that's for safety. You wouldn't want to have the door open and activate steam to chamber.
Is the door pressure switch being made. If s35 activates and the pressure switch isn't tripped S2 will not engage.