Dishwasher Not Draining? A Comprehensive Guide to Troubleshooting and Repair

by Jasmine November 23, 2024

written by Jasmine November 23, 2024

How to Troubleshoot a Dishwasher That Won’t Drain: A Step-by-Step Guide

Plumbing-Related Drain Problems

Dishwashers often fail to drain due to plumbing issues outside the appliance itself. Check the following:

Garbage Disposal: Ensure it is clear of food buildup. Run the disposal thoroughly with plenty of water to resolve potential drainage problems.
Air Gap: Clean the air gap and the hose connecting it to the disposal or sink drain to remove any blockages.
High-Loop: Inspect the dishwasher’s drain hose. If it is not looped up higher than the level of the dishwasher, water may not drain properly. Return the hose to its proper position or install an air gap.

Appliance-Related Drain Problems

If plumbing issues are not the culprit, consider the following appliance-related causes:

Drain Screen: Check for clogs in the drain screen at the bottom of the dishwasher tub. Remove any obstructions, such as plastic lids, glass, or labels.
Filter: Clean the dishwasher filter according to the appliance manual’s instructions. Different models may have screens, removable filters, or require removing the bottom spray arm for cleaning.
Dishwasher Drain Hose: Disconnect the drain hose from the dishwasher pump. Clean the end of the hose and blow into it. If it is clogged, remove the clamp on the other end and clean the hose in a sink. If unclogging is unsuccessful or the hose is old and cracked, replace it.

When to Call a Professional

If your dishwasher is relatively new and the above fixes have failed, consider the following:

Dishwasher Replacement Parts: Check for faulty dishwasher components such as the check valve, piston and nut assembly, drain pump and drain motor, pump solenoid, belt (on belt-driven pumps), timer, door switch, or electronic control. These parts are widely available online.
Electrical Expertise: Checking many of these parts requires a multimeter and knowledge of electrical circuitry. It is advisable to leave this task to a professional unless you possess the necessary expertise.

Additional Tips:

If you have just installed a new garbage disposal, make sure the plug inside the drain hose nipple has been removed.
Regularly inspect the dishwasher’s drain hose for kinks or blockages.
Clean the dishwasher filter regularly to prevent clogging.
If the dishwasher is not draining properly after a cycle, check for any remaining water at the bottom of the tub. A small amount of water may be normal, but excessive water indicates a drainage issue.
If you are replacing a dishwasher, some appliance stores offer free installation and old appliance disposal as part of the purchase price.

Jasmine

Jasmine's journey began with a camera in hand and a heart brimming with stories. The world, for her, wasn't just a collection of sights and sounds; it was a vibrant tapestry woven with intricate details, each one waiting to be captured and explored. This inherent curiosity naturally led her to the written word, where she discovered the power of language to weave narratives that resonated with the soul. Jasmine's articles in LifeScienceArt's life section are a testament to this synergy. Her words dance across the page, painting vivid pictures that transport readers to the heart of the experience. Whether it's the quiet contemplation sparked by a morning sunrise or the electrifying energy of a bustling city street, Jasmine has an uncanny ability to translate the essence of a moment into words that resonate. But Jasmine's talents extend far beyond the written word. With a keen eye for detail and a photographer's soul, she sees the world through a unique lens. Her photographs are more than just snapshots; they're windows into hidden emotions and unspoken narratives. A single image, captured with Jasmine's signature touch, can evoke a kaleidoscope of feelings, prompting introspection and igniting a sense of wonder in the viewer. The way she plays with light and shadow, or the way she finds beauty in the ordinary, speaks volumes about her artistic vision. It's clear that Jasmine doesn't just see the world; she feels it, deeply and passionately. This depth of feeling is evident in her writing as well. Jasmine's articles are infused with a raw honesty that connects with readers on a personal level. She doesn't shy away from exploring the complexities of life, the joys and sorrows, the triumphs and failures that we all experience. But even when tackling difficult topics, there's an underlying optimism in her words, a belief in the inherent resilience of the human spirit. Jasmine's writing encourages readers to embrace the full spectrum of life's experiences, to find beauty in the unexpected, and to navigate the challenges with courage and grace. One gets the sense that Jasmine's own life is a continuous exploration, a constant search for new experiences and perspectives. Whether it's venturing off the beaten path to capture a hidden gem through her lens or delving into the depths of human emotion through her writing, Jasmine thrives on the journey itself. This inherent sense of adventure is infectious, inspiring readers to embark on their own explorations, both internal and external. Jasmine's work isn't just about capturing moments; it's about igniting a spark of curiosity and a desire to live life to the fullest. Perhaps the most captivating aspect of Jasmine's work is the sense of intimacy it evokes. Reading her articles feels like having a conversation with a close friend, someone who understands the nuances of life and isn't afraid to share their vulnerabilities. This ability to connect with readers on a personal level is what makes Jasmine's writing so powerful and enduring. It's a testament to her own authenticity and her genuine desire to connect with others through the magic of words and images.