Black Mould Spots from dishwasher

[BooMeowson]

Some items (stoneware plates, cutlery) seemed to have black mould spots on. We emptied the dishwasher, ran it on the hottest cycle and washed the plates etc again and the spots are still there.

Any advice how to better clean the dishwasher, and anything "infected"?

have you taken out and cleaned all the filters, and topped up the salt reservoir?

Do you know how to take off the spinning arms and shake out any particles?

Have you cleaned round the edge of the door and its frame, especially the rubber seal, and the one at the bottom, which may have perished?

If yes to all of those, we can think about plumbing. Please describe the route the waste hose takes, and how it goes into the drain. Is the water supply from a loft tank, or from the watermain?

make and model may help.