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Why is dishwasher filling with water?

Published in Dishwasher Troubleshooting 3 mins read

Your dishwasher is likely filling with water primarily because the water isn't properly draining out.

Understanding Why Water Remains in Your Dishwasher

When your dishwasher tub contains water, especially after a cycle, it's most often a drainage issue rather than the machine continuously filling when it shouldn't be. The water fills for the wash cycle, but then it gets stuck because the drainage system is blocked or inhibited.

The Primary Culprit: A Clogged Filter

According to common issues, the most likely reason for water remaining in your dishwasher tub is a dirty filter. The dishwasher filter is designed to catch food debris and prevent it from recirculating or clogging the pump and drain line.

  • How it gets blocked: Tough food particles, such as popcorn kernels or wet chunks of paper from container labels, can easily get lodged in the filter.
  • The effect: When the filter is clogged, it prevents water from draining out of your dishwasher efficiently, or sometimes at all. This leaves water standing in the bottom of the tub.

Other Potential Factors

While a clogged filter is a leading cause referenced for drainage problems, other issues can contribute to water being present:

  • Improper Detergent Use: The reference notes to "make sure the overflowing isn't caused by using dish soap in the dishwasher." Using regular dish soap instead of automatic dishwasher detergent creates excessive suds. These suds can overflow the detergent dispenser area and, more importantly, can impede the pump's ability to drain water effectively, sometimes causing water to remain or appear excessive.

Addressing Water Issues in Your Dishwasher

The first step in troubleshooting water standing in your dishwasher tub, especially if it's linked to drainage problems described in the reference, is to inspect and clean the filter.

Steps to Take:

  1. Locate the Filter: Consult your dishwasher's manual to find the filter location (usually at the bottom of the tub).
  2. Remove and Inspect: Carefully remove the filter assembly. Check for visible debris like food particles, paper, or other foreign objects.
  3. Clean Thoroughly: Rinse the filter under running water to remove all particles. Use a soft brush if necessary to dislodge stubborn debris.
  4. Check for Soap Issues: Ensure you are only using detergent specifically designed for automatic dishwashers and using the correct amount.

By addressing the filter blockage and ensuring proper detergent use, you tackle the most common reasons water fails to drain, causing the appearance of the dishwasher "filling" or holding water.

Common Causes Why Water Remains (Based on Reference) Initial Check/Solution
Dirty Dishwasher Filter Blocks drainage path; prevents water from leaving the tub. Inspect and clean the filter.
Using Dish Soap Causes excessive suds that impede drainage or cause overflow appearance. Use only dishwasher detergent.

Cleaning the filter is a simple maintenance step that can resolve many drainage issues and keep your dishwasher running smoothly.

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