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[LG Dios dishwasher] A sound is heard when water is drained.

Troubleshooting

Do you hear a gulping or whirring sound when the dishwasher drains water through the drain hose?

Causes and Symptom

  • The drain hose has become narrow as a result of the entry of foreign objects.
  • A drain pump is operating.

The water used in washing dishes in the dishwasher goes through the drain hose and the drain pipe to the sewer.
At this time, if foreign objects build up in the drain pipe, the pipe will be narrowed and thus water flow to the sewer will be obstructed.
Specifically, water gathered in a sharp bend of the pipe may make a gulping sound when it passes.
In addition, the drain pump may make a whirring sound when it pumps water.


Dishwasher drain hose connected to sewer pipe

Try this

Does your sink make a gulping sound and not drain water smoothly?

➔ Clean the drainpipe with a specialized tool or cleaner.

Connecting the drain hose of the dishwasher to the drain hose of the sink may block the piping of the sink as food waste and other foreign objects gather inside it.
If you hear a loud gulping sound or see that the sink drains water slower than usual, clean the drainpipe with a specialized tool or cleaner.

Piping cleaning with pipe cleaner

Wait! Here are more tips
If the drain pipe of the sink is short, water from the end of the drain pipe may hit the bottom of the sewer and make a gulping noise.
In this case, you can reduce the noise by adjusting the length of the drain pipe.
Contact a plumbing service to have the drain pipe extended.
Adjusting the length of the drain reduces the sound of the drain

Do you hear a whirring sound while water drains?

➔ This sound comes from the drain pump motor when it pumps water and will disappear when draining is finished.

Selecting Wash and pressing the Start button also starts the drain pump.
The drain pump installed in the dishwasher may make a whirring sound when it pumps water.
When washing is completed and the water inside the pipe is completely drained, the noise will disappear.

Drain pump motor running

This guide was created for all models, so the images or content may be different from your product.

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