The most common cause of a Bosch dishwasher not draining properly is a blockage, so check your filter to see if there is food residue that is causing an obstruction. The second most typical reason a Bosch dishwasher stops draining is if either the filter or water pump is clogged with food debris. This guide will show you exactly how to check and clean these components.
This guide is intended for most major Bosch dishwasher models including:
DW44ZP
DW44ZP
DWHD64CP
DWHD64CP
DWHD64CP
DWHD64CS
DWHD64CS
DWHD64EP
DWHD64EP
SHE45M05UC
If you notice there is water still left that has not been flushed, an E24 error code indicates there is probably a blockage somewhere inside your Bosch dishwasher and this is what is stopping the appliance from fully draining.
One of the main reasons your Bosch dishwasher may not be draining properly is that the filter unit is blocked. The filter prevents food particles from depositing back onto clean dishes and clogging drains. As water and dishwashing liquid circulate through the dishwasher, bits of food are rinsed away, leaving them behind in the filter at the base of the dishwasher. Clearing the filter unit of this debris may help your dishwasher drain normally.
It is important to regularly clean your filter unit. If you are finding that your Bosch dishwasher is not draining, this is the best place to start.
The dishwasher pump is found in the bottom of your Bosch dishwasher and is responsible for forcing water into the spray arms. It also directs the water into the drain hose during the drain cycle. If the dishwasher pump is blocked, this may cause your dishwasher to stop draining properly.
The drain hose is responsible for draining water during the spin cycle. The drain hose is a large pipe found connected to the dishwasher and runs underneath your sink. If the drain hose is kinked or twisted, it will no longer drain the water. Smoothing out these bends and checking for any debris can help address this issue.
You can generally pull out your dishwasher’s hose using a pair of tongs, then clean out any clogs using a commercial drain cleaner. Once you have checked for and removed any clogs in your drainage hose, you will need to reconnect it to your dishwasher.
If you have a garbage disposal, run it; this may occasionally clear the back-up debris from your drain lines, allowing the water to flow out of the dishwasher. Since debris is often stuck in your drain, try cleaning it using a solution of equal parts baking soda and vinegar.
Mix together about a cup of each baking soda and vinegar, then pour the mixture in the standing water in the lower portion of your dishwasher. Run the hot wash cycle with vinegar in a standing cup in it, and then follow that up by dumping an equal amount of vinegar and baking soda–one cup each–into the bottom of the dishwasher. If a pool of water is sitting at the bottom of the dishwasher once the cycle is over, then you probably have a drainage problem caused by a blockage somewhere in your filter or in the tub.
A dishwasher that is clogged or overflowing could result in serious water damage in your home if it is not taken care of. A clogged dishwasher causes these problems because it cannot drain as well and water does not pass through it the way it is supposed to.
Some simple ways to prevent blockages that may cause your Bosch dishwasher to stop draining include:
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