Dishwasher not cleaning? That sign tells you that it is time for dishwasher cleaning. If you have a dishwasher you should use it regularly. This way food (and other) debris wont choke up your dishwasher. Regular use also reduces the need for cleaning. Manual of your dishwasher should have clear instructions how to clean and maintain your dishwasher. Follow the instructions of your manual when you are cleaning your dishwasher. Cleaning dishwasher First empty your dishwasher and check all spinning arms. Make sure that water can run through them, and holes of the spinning arms are all open. If you see any debris remove them. Wipe the door and the gasket. And after that check that drain of your dishwasher is clean. You can also use vinegar or dishwasher cleaning products to remove calcium form your dishwasher. When doing this, check your manual what methods are recommended for your dishwasher.