Hmmm....you don't have a pressure chamber as such.
Pic 1 is the brake tank (fill unit). Pic 2 is the water softener unit (where you put the salt). The transfer hose runs from the sump to the first large bore inlet at the front of the brake tank. Take off the cover below the door & you'll see it.
Thanks Zipper, I had a poke around last night and found the hose going to the sump, which appeared to be clean, but what I decided to do to be sure was to take the waste hose off, and then remove pump and blow down it, which removed all of the water, and was clear.
I then turned the DW on and it did as normal, but I went back to it about 45 mins later and I opened the door and it was doing a cycle with warm water, which gave me hope (as I havent know it to get past cold fill), I decided to leave it on when I went to bed, but unfortunately this morning when I went into the kitchen it had not completed wash and was just draining again.
In your opinion zipper could it still be the flow meter (As all I have done is replace the reed switch)?