Remove all dishes, the bottom rack, and potentially the lower spray arm to gain full access to the floor of the tub. Clear Standing Water:
First, the dishwasher was emptied completely. For safety, the power was switched off at the breaker to ensure no accidental start-ups. Armed with a large cup and a thick sponge, the standing water was bailed out until the white plastic basin was visible again. Step 2: Extracting the "Heart" (The Filter) how to clean out a dishwasher drain exclusive