No this has nothing to do with the work Patrick did on the EX HEPI controller and IOC....no really...
Noticed the EX Pressure was not okay on the Operator Overview NUC. Patrick and JeffB confirm zero pressures and zero reback from the VFD. Patrick states that the pressures went to zero and the VFD readback zero'd at 1628utc Saturday. The pump station can sit in this state for days/weeks with little consequence. We don't know if the fluid level tripped the power or if the VFD had an overvoltage error. Historically, these are the only two scenerios bringing us here. Either way, will need to go to the end station to determine that and to reset things regardless of which. Patrick, has put the controller into a state ready for restarting, whenever that happens. Will open an FRS ticket.:https://services.ligo-la.caltech.edu/FRS/show_bug.cgi?id=14546