Zanussi Dishwasher overfilling with water

[keekster64]

I have an intermitent problem with my dishwasher over filling with water. Instead of an inch of water it just keeps filling up until it leaks out the front. If I put it back to the start of the cycle it will empty out. If I switch it to an alternative cycle, and then it will work again for a while. When it does it again I switch back to the other cycle for a bit. What could cause A. the overfilling, and B. the problem to be intermitent. Thanks

 

[Sleepyhead]

Partial blockage, some debris moving around causing a blockage, faulty pressure tube or a faulty pressure switch.

 

[keekster64]

Machine stopped mid cycle last night, timer knob stopped turning, when I advanced it slightly it made wirring noises, but did not turn. Could this be the source of the problem?

 

[Sleepyhead]

Nope. This is another problem. Depends on where it stops, could be lack of heat, could be faulty programmer.