Jason360 wrote:Any other ideas?
Beautiful machine.
The water-level sensor works like this: If there is water, there will be continuity between the autofill probe and the boiler/ground. Not much--somewhere in the 100s of kohms if I remember. If there is no water, it will be an open circuit, zero continuity. So if you disconnect the autofill probe entirely, it should fill endlessly.
So it could be a wiring problem. Autofill wire shorted to ground somehow, or a wire going to the autofill box or the solenoid could be loose. Check for voltage on the solenoid and the autofill box. Does the solenoid click or hum? If so, something is blocked in the plumbing. That's where I'd start. New solenoids or autofill boxes are pricey, but I've had luck on the coffeegeek for sale board getting them.