Sounds like it's draining but no water in ??? keeps going?

Got up this morning and it was making a pumping noise as if still draining. The filter had some bits in so removed bits and put it back together, if I put some water in it drains straight out so it is still pumping!!!

Any idea how to reset it?? I've tried turning it off for 10 mins at wall and have tried selecting various programmes but to no avail!

Beko D2731FW