Answer to "Error code E2 F2"Thank God that this worked. I could see that water and I think coffee had gotten in along the top edge from a counter top spill. There was water spots and rust above and below the control panel and circuit board. I could see corrosion on the teeth of the circuit board where the power connectors snapped on. A light sanding with a pink eraser, coated with dielectric grease, reassembled and it worked. To clean properly you need to get the circuit board all the way out of the plastic housing. Go slow and be careful undoing all the clips and tabs. To prevent future ingress of water from the counter top I used some foil tape to seal the edge between the door and the top edge of the control panel display.