The E23 error code there is a draining issue. This happens when the drain hose or filter gets clogged or blocked, or when the drain pump is faulty. Uncap the filter at the dishwasher’s bottom. Apply a sponge to the area around the drain hole. Please, remember: sharp objects like bones, pieces of glass, etc., may be stuck in the drain hole. It is advisable to use a flashlight. Turn the impeller with your hands to ensure it spins freely. Remove the drain pipe and check it for blockages. Make sure it is not kinked or twisted. Remove excess water from the machine. Use a bucket or tray. Put the hose back onto the drain pipe and recap the filter. Put two or three teaspoonfuls of bicarb into a cup of vinegar and put the mix in a plastic container. Then put it into the dishwasher. Close the door, press on it slightly and run a short cycle. Let go of the door when the cycle is launched (after about a minute).