that would
Or the control board. I've done everything on that list except checking the operation of the fill valve, although, as far as I can tell this is *not* happening:
"Sometimes this part (fill valve) can go bad and overfill the ice cube tray when it is not needed."
I know that because the first sign of a problem, after it makes a couple of trays of full size cubes, it makes canoes and little chips. That tells me that the ice maker isn't getting enough water, not too much. After one tray of those, I know the tube is frozen. You can see some canoes here:
And then there's the issue of the temperature swings within the freezer.
-7° to 12° with the dial set at 3, with 9 being the coldest and 0 being Off. That just doesn't seem right. That's why I mention the control board.
The unit as has been off/open all day, to be turned on first thing in the morning.