How to Troubleshoot a Dishwasher That Won't Drain

A dishwasher that fails to drain correctly is tricky to diagnose because there are lots of possible reasons for the problem, and some don't even involve the dishwasher. You can sort out drainage problems with the help of several possible components on the appliances itself. Tools and supplies you have to include bucket and sponge, screwdrivers and the Replacement drain hose (if needed). First of all, check the drain screen to make sure nothing is clogging it.

Clear plastic lids, glass, labels, and bits of plastic can cover the drain, and they can be hard to see unless you look closely. Clear the Filter - Dishwashers use a variety of different filter designs. Some have a simple screen, some have removable filters below the screen, and some require removing the bottom spray arm for a thorough cleaning. Check the appliance manual for instructions on how yours should be cleaned.

Check the Dishwasher Drain Hose that is like a plastic tube that runs from the bottom of the dishwasher. Now you have to turn off the power to dishwasher by pulling out its plug or switching off the breaker to the dishwasher circuit. Remove the toe- kick panel and clean the end of hose then blow into it. If the hose is plugged and you can't blow through it, remove the clamp on the other end of the hose, and then clean the hose out in a sink.

If you can't unclog the hose, or if it is old and cracked, replace it. If you are unable to do all the fixes call an Appliance Repair Expert who can do all kinds of diagnosis. It is important if you don't have enough knowledge because checking many of these parts requires a multimeter and some knowledge of electrical circuitry.