Indesit DG 6100W Dishwasher keeps stopping through wash cycle?

I have a Indesit DG 6100W Dishwasher. The problem is that it starts the wash and then after approx. quarter way through wash just gets stuck on the cycle (just circulating dirty warter) The Tablet dispensor door has also stopped working although this about a month ago so not sure if connected.

Please, please, please any help would be good. Have just had to by new tunble dryer through fault and can not afford new dishwasher....

Thanks