Bosch washing machine
You have a sticking water inlet valve, which is slowly letting water enter m/c.
If it is a hot and cold fill m/c, what you need to do is turn either the hot or cold tap off to the m/c, and see if the problem continues, if say you turn the hot off and it still comes into the washer, then you have sticking cold valve, replace with new one. if after turning cold off, and it still fills, then you need new hot valve fitting.
If it is a cold fill m/c only, then simply replace the cold inlet valve.
Plz rate my solution.