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Sorted dishwasher problem had to drag the whole thing out to discover I had managed to undo the water inlet hose that is attached to the top spray arm. There is not much to them when you see them out no casing like a washing machine this made it easier to fix the problem. Will not do that again as it was so much hassle to get the thing in and out of its space. Kitchen fitters instal these things and don't bother what happens when it needs taken out for repair.