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Dishwasher Not Draining? Basic Checks Guide

Try these simple steps if there's standing water in your dishwasher after a cycle.

Before You Call: Simple Dishwasher Drainage Checks

Finding dirty water pooled at the bottom of your dishwasher is unpleasant. Before calling for repair, perform these basic checks focusing on common blockage points like the filter, drain hose, and sink connection.
Important: This guide covers checking accessible filters and hoses. It does not cover repairing or replacing the internal drain pump or control board.

⚠️ SAFETY FIRST! READ BEFORE PROCEEDING! ⚠️

ALWAYS turn off the power to the dishwasher at the circuit breaker before attempting to clean filters or inspect hoses.
Have towels and a shallow pan or bucket ready to catch dirty water when checking filters or hoses.
Be careful of sharp objects (like broken glass) potentially caught in the filter area.
If you are unsure or uncomfortable performing any step, STOP and contact a qualified professional.

Step-by-Step Basic Checks for No Draining

  1. Clean the Dishwasher Filter

    Turn off power first! Locate and remove the dishwasher filter(s) at the bottom of the tub (check manual). Clean them thoroughly under running water, removing all food debris and gunk. A clogged filter is a very common cause of poor draining. Reinstall correctly.

    Clean the Dishwasher Filter

  2. Check the Drain Hose

    Turn off power. Locate the corrugated drain hose running from the dishwasher (usually under the sink). Check its entire length for sharp kinks or visible clogs. Ensure it's securely connected.

    Check the Drain Hose

  3. Check Connection Point (Garbage Disposal / Air Gap)

    Where does the drain hose connect under your sink?

    - If to Garbage Disposal: Ensure the disposal is not clogged. Run the disposal briefly (with water running) to clear it. Sometimes, the knockout plug inside the disposal's dishwasher inlet wasn't removed during installation – this requires disconnecting the hose and removing the plug (professional help recommended if unsure).

    - If to Air Gap: The air gap is a small cylinder usually mounted on the sink deck. Unscrew the cap and check for debris buildup inside. Clean it out if necessary.

    Check Connection Point (Garbage Disposal / Air Gap)

  4. Check Kitchen Sink Drain

    Ensure your kitchen sink itself is draining freely. A clogged sink drain can prevent the dishwasher from draining properly.

Dishwasher Still Not Draining? Time for Professional Help

If you've thoroughly cleaned the filter, checked the drain hose for kinks, ensured the disposal/air gap connection is clear, and the sink drains well, yet the dishwasher still holds water, the problem likely lies with the drain pump (either clogged internally or failed) or the control system.
Replacing a drain pump or diagnosing control issues involves electrical components and handling water. For safety and effectiveness, this repair should be performed by a qualified appliance repair professional.

Get Your Dishwasher Draining Again!

Need expert help with a non-draining dishwasher? Connect with experienced technicians who can diagnose and fix the problem quickly.

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