If your Whirlpool dishwasher isn’t draining, your first instinct might be to contact an appliance technician. There are, however, many things a DIYer can do at home before taking this step—you may be able to get your dishwasher working again without even spending a cent!
This guide walks you through some simple causes and solutions for a Whirlpool dishwasher that isn’t draining. Read on to find out what to do.
This guide applies to all major models of Whirlpool dishwashers, including:
7DP840CWDB0
7DP840CWDB1
7DU840CWDB0
7DU840CWDB1
7DU900PCDB0
7DU900PCDQ0
7DU900PCDQ1
7DU900PCDQ2
7TUD4000EB0
WDF520PADM7
WDT710PAYM3
WDT710PAYM5
WDT710PAYM6
WDT720PADM0
WDT720PADM1
WDT720PADM2
WDT750SAHZ0
WDT780SAEM1
WDT780SAEM2
WDT970SAHZ0
WDTA50SAHZ0
Dishwasher filters capture food particles and other pieces of debris to prevent them from entering the dishwasher’s internal mechanisms. If you don’t clean the filter regularly, it can get completely blocked, which contributes to drainage issues. If this is your issue, you may see visible debris building up around the filter, notice an odor coming from the filter, or extra water pooling in your dishwasher.
To fix this:
The drain hose removes dirty water from your dishwasher and channels it into your household drainage system. If the hose is blocked by debris, or if the hose is kinked, water won’t be able to drain properly, which can lead to pooling. Another sign of a drainage hose issue is a loud noise when your dishwasher is on the drainage part of the cycle. This indicates the machine is struggling to drain.
To fix this issue:
In some dishwasher setups, the garbage disposal unit and dishwasher share a drain. If this is the case with your Whirlpool dishwasher, the clogged garbage disposal can prevent your dishwasher from draining. Signs of this include an unpleasant smell coming from the garbage disposal, and you’ll hear a loud noise when your dishwasher is trying to drain.
To fix this:
An essential component of some dishwasher setups is the air gap, which prevents dirty water from back flowing into the dishwasher. If there is an issue with the air gap, water from the garbage disposal can flow into the dishwasher, leading to pooling water and an unpleasant smell. Another sign of an air gap issue is a bubbling or gurgling sound during drainage.
To resolve this issue:
A drain pump is responsible for pumping dirty water out of your Whirlpool dishwasher interior. If it’s faulty or blocked, water won’t be properly expelled, which leads to pooling. If you’ve eliminated all other issues, and you notice an unusual noise during the drain cycle, the drain pump could be the culprit.
To check the drain pump:
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