That one routed a water line to the machine, but included a manually operated valve. [Eod_punk] added a solenoid valve and level sensor in this project. The level sensor is submerged in the tank ...

A 3-way AC solenoid valve, wired directly to the buttons ... boiler and group head while a thermal cut-off fuse protects the machine from overheating in case of a malfunction.

Solenoid-triggered valves, like the water fill valves in washing machines, dishwashers and water softeners, shut off almost instantly. This not only causes the most ferocious hammering ...