Bosch dishwasher does not take water : solution

I have a Bosch dishwasher, model SGU47M05SK, which suddenly stopped taking water in. It goes through the wash cycle in normal time, but without water. As suggested in several internet tips, I poured water inside the dishwasher manually, which should "wake up" the water intake. However, the water pump removed the water within seconds after start, but did not continue taking water in by itself.  

The solution that worked in my case (this is also described in the user's manual):
1. Unplug the dishwasher's power cord
2. Close water
3. Open water connector to Aquastop device, and remove grains of sand or rust from the two filters inside the connector
4. Open water
5. Plug back the dishwasher's power cord
6. Start the dishwasher