Hoover Quattro 1300 Washer/Dryer refills with water after finish!?

I have a Hoover Quattro System 1300 Powerjet Washer Dryer. I cannot remember how old it is but have not had problems before.

Occasionally it will not dry properly and clothes are wetter after the drying cycle than before starting. It now fills with water after all cycles are finished and when turned off.

Would be grateful for some advice.

Thanks