When standing water refuses to drain from the bottom of your residential dishwasher tub, you must follow a structured troubleshooting process to clear the blockage. First, bail out excess water and remove the lower dish rack and cylindrical filter basket to check for trapped food debris. Second, inspect the garbage disposal inlet knockout plug if the dishwasher is newly installed. Third, check the drain hose for kinks. You can troubleshoot drainage failures easily. You can verify that your corrective action is successful when clearing trapped food pulp out of the sump filter and running a forced drain cycle causes the standing water to pump out completely through the kitchen sink drain.
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