GW601-K F & P water problem?

Hi,

My F & P washing machine won't fill with water anymore. Yesterday it would fill with water but it was really slow and it sounded like the water was straining to come out. My bf had a look (probably touched something) & now it just won't run any water into the tub.

Would love to know how I could fix this problem or check it somehow?

Are the wires connected to the hot/cold water valves/taps meant to be a certain way on the machine?