Electrolux ESI 602 dishwasher, no water in and humming noises?

When I switch my dishawasher on it comes on and starts the washing process, releases the soap but when the pump is supposed to start pumping water it the machine just hums... You can also hear water moving around the inside of it sometimes.

If I fiddle with the lock so i can see inside when it's on.... and by turning the dial around, every now and again the water will come through and you can hear it gurgling.

Just before it stopped working it started making a loud hollow noise if that's any help also!

Many thanks.
Anthony