Thank you Jim !! Until today, the orange light was on, boiler pressurized and hot, even though I couldn't get the group to fill or pull a shot.
Today, the light went off, even though the tank was full, and the machine lost the pressure, so I shut it off.
I have taken off the top (did the mod for draining everything out of the front... also have pulled the guts out of the group to clean the original greasy goop)
This was all a few years ago when I first acquired the machine. Since then, I really haven't done anything except pull shots and smile.