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Troubleshooting Guide: Why Your LG Dishwasher is Not Draining Properly


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Written by TechVill Appliance Repair Ltd. Editorial Contributors

Having a dishwasher is a convenient and time-saving appliance in any kitchen. However, when it comes to a dishwasher not draining properly, it can be frustrating and can disrupt your daily routine. 

If you own an LG dishwasher and are experiencing drainage issues, this troubleshooting guide will help you understand the causes and provide solutions to address the problem.

Causes and Solutions for an LG Dishwasher Not Draining Water

Causes for an LG dishwasher not draining water can vary, but common issues include a clogged drain hose, a malfunctioning pump, or a blocked air gap. 

To address these issues, it is advisable to check and clear any debris from the drain hose to prevent any blockage, ensuring a smooth flow of water. 

Inspect the pump for damage, looking out for signs of clogs or standing water that might indicate an issue. 

Additionally, unclog any dirty pipes that may contribute to drainage problems. Ensure the air gap is free of obstructions to prevent a block in the system. 

Regular maintenance, such as unclogging pipes and promptly addressing standing water issues, along with proper usage, can help prevent these drainage issues and maintain the dishwasher’s optimal performance.

LG Dishwasher Not Draining Troubleshooting Guide

If you find your LG dishwasher failing to drain properly, addressing the issue promptly can help restore its optimal functionality. 

This troubleshooting guide is designed to assist you in identifying and resolving common reasons behind an LG dishwasher not draining water. 

From potential blockages in the drain hose to malfunctions in key components like the pump or air gap, we will explore various factors contributing to this problem and provide practical solutions to ensure your dishwasher operates efficiently.

1. Clogged LG Dishwasher Filter

If your LG dishwasher is not draining properly, a common culprit could be a clogged filter. 

The filter prevents debris from entering the drain pump and drainage system, helping to prevent potential clog. 

To address this issue, locate the dishwasher filter, usually found at the bottom of the appliance, and clean it thoroughly. Remove any accumulated food particles, grease, or debris. 

Regularly cleaning the filter can prevent future drainage problems and maintain the dishwasher’s efficiency.

2. Drain Hose Clogged or Kinked

A clogged or kinked drain hose can impede the smooth flow of water during the drainage process. To troubleshoot, inspect the drain hose for any blockages or bends. 

Remove the hose and flush it with water to clear any debris. Ensure there are no kinks or twists in the hose that might restrict water flow. 

Additionally, check the connection points for a secure fit. Straightening out the hose and ensuring a clear path for water to exit can often resolve drainage issues.

3. Faulty LG Dishwasher Drain Pump

A malfunctioning drain pump can significantly impact the dishwasher’s ability to drain water. To determine if the pump is the issue, first, access the pump, typically located at the bottom of the dishwasher. 

Check for any visible signs of damage or obstruction. If the pump appears damaged or fails to operate, it may need replacement. 

Consult your dishwasher’s manual for guidance on pump removal and replacement, or seek professional assistance if necessary.

4. Air Gap and Garbage Disposal Issues

Problems with the air gap or garbage disposal can hinder proper drainage in an LG dishwasher. Ensure the air gap, if present, is free from blockages and functioning correctly. 

If you have a garbage disposal, check that it is not clogged and is operating as intended. Run water through the disposal to clear any potential obstructions. 

Verifying the proper functioning of both the air gap and garbage disposal can contribute to effective water drainage in your LG dishwasher.

! Remember, safety is a priority, so always disconnect the dishwasher from power before attempting any troubleshooting or repairs. 

Troubleshooting a non-draining LG dishwasher can be challenging, but with the right knowledge and guidance, you can address the issue effectively. 

Understanding the causes and solutions for a dishwasher not draining properly is crucial in maintaining its optimal functionality. 

If you find yourself unable to resolve the issue on your own, seeking professional help from TechVill, a reputable appliance repair service provider, is recommended. 

With our expertise and experience, we can help you get your LG dishwasher back to working condition in no time.

Seeking For Help? Call TechVill

At TechVill, we understand the frustration of dealing with a dishwasher that refuses to drain. That’s why we offer same-day or next-day appliance repair services in Calgary, CA for various brands, including LG dishwashers. 

As an authorized appliance service provider, we have certified technicians who can fix major brands such as Kenmore, Maytag, Whirlpool, Frigidaire, Samsung, LG, and more. 

At TechVill, satisfaction of our customers is our top priority. We strive to provide transparent and clear communication throughout the repair process. 

Our services come with a service warranty, ensuring lasting results. As a small business that cares, we pride ourselves on delivering personal service and quick, reliable repairs and provide all the necessary information for our clients. 

Our positive customer reviews and repeat clients speak to our commitment to excellence.

Our certified journeyman technicians, on average with 10 years of experience, are equipped to handle repairs and installations, and they provide valuable advice on maintaining and choosing robust household appliances. 

We cover various appliance types, including washers, dryers, dishwashers, fridges, ovens, cooktops, and more. 

Our focus is on providing same-day or next-day repair solutions, ensuring that your appliances are up and running as quickly as possible.

TechVill’s professional repair services are available in various locations around Calgary, including Airdrie, Chestermere, Cochrane, Canmore, and Okotoks. 

Whether you’re facing an LG dishwasher not draining or any other appliance issue, you can rely on TechVill for prompt, efficient, and quality service.

If you’re experiencing appliance troubles or have questions about maintenance, TechVill is here to help with anything you need. 

Our dedicated team of certified technicians is ready to answer your inquiries, provide expert advice on appliance care, and swiftly address any repair issues. 

Trust TechVill for reliable and efficient service – because when it comes to your appliances, we’re here to handle anything and everything. Contact us today, and let us be the solution to your appliance needs.

FAQs on LG Dishwasher Not Draining

Water in the bottom of your LG dishwasher may be attributed to several factors, such as a clogged drain, a malfunctioning drain pump, a blocked filter, improper loading or overloading of dishes, or a faulty water inlet valve. 

To troubleshoot, check for visible debris in the drain, ensuring it is clear for proper water drainage. Inspect the drain pump for any signs of damage and replace if necessary. 

Clean the dishwasher filter located at the bottom of the appliance to prevent clogs. Arrange dishes properly to avoid obstructing water outlets, and verify the functionality of the water inlet valve. 

Regular maintenance and addressing these issues promptly can help prevent water accumulation, ensuring the efficient operation of your LG dishwasher. 

If problems persist, consider consulting the appliance’s manual or seeking professional assistance.

When facing LG dishwasher error codes related to draining issues, several common error codes may provide insights into the problem:

  • OE Error Code: The OE code indicates a drainage issue. Check for clogs in the drain hose, filter, or air gap. Ensure the drain hose is not kinked or bent, impeding water flow. Clear any debris or standing water in the dishwasher and run a diagnostic cycle.
  • E1 Error Code: An E1 error may signify a water inlet problem, impacting proper draining. Inspect the water inlet valve for any blockages, and ensure a steady water supply. Clear any debris from the valve and hoses to facilitate efficient water intake and drainage.
  • E3 Error Code: The E3 code often points to a problem with the drain pump or its operation. Check for obstructions in the pump or drain impeller. Ensure the pump is functioning correctly and replace it if necessary. Inspect the wiring for any faults that may affect pump operation.
  • E4 Error Code: An E4 code typically indicates a water overflow issue. Verify that the dishwasher is level and that there are no obstructions in the float assembly. A malfunctioning float switch may also trigger this error, requiring inspection and potential replacement.
  • FE Error Code: The FE code signals a fill error, suggesting an issue with water intake or drainage. Confirm that water pressure is adequate and check for clogs in the water inlet valve or hoses. Ensure the drain hose is properly installed to prevent water from backing up.

To address these error codes, follow the specific troubleshooting steps outlined in the dishwasher’s manual for each code. 

Regularly cleaning filters, checking hoses, and ensuring proper dishwasher maintenance can prevent recurring draining issues and associated error codes. 

If problems persist, seeking assistance from LG customer support or a professional technician may be necessary.

To perform a drain pump test on an LG dishwasher, follow these general steps:

  • Access the Dishwasher: Ensure the dishwasher is turned off and unplugged. Open the dishwasher door and remove the lower dish rack to access the bottom of the appliance.
  • Locate the Drain Pump: Identify the drain pump, usually located at the bottom of the dishwasher. Refer to your dishwasher’s manual for specific instructions on locating the pump, as its placement may vary.
  • Inspect for Debris: Check the drain pump for any visible debris or foreign objects that may be obstructing its operation. Remove any obstructions carefully using gloves or tools.
  • Test the Impeller: Manually rotate the impeller of the drain pump. The impeller is a small propeller-like device responsible for pumping water out of the dishwasher. Ensure it moves freely without any resistance.
  • Check for Blockages: Inspect the drain hose and the connection points for any blockages or kinks. Ensure the hose is free from obstructions and has a clear path for water to flow.
  • Run a Test Cycle: If your LG dishwasher has a diagnostic or test mode, initiate it to run a test cycle. Follow the specific instructions outlined in your dishwasher’s manual to activate the diagnostic mode. During the test cycle, observe the drain pump’s operation.
  • Listen for Unusual Noises: While the test cycle is running, listen for any unusual noises coming from the drain pump. Grinding or humming sounds may indicate a malfunctioning pump that needs replacement.
  • Check for Proper Drainage: Observe the water drainage during the test cycle. Ensure that water is being pumped out efficiently without any signs of standing water or slow drainage.
  • Consult the Manual: If your dishwasher has error codes or indicators, refer to the manual for guidance on interpreting these codes in relation to the drain pump. Error codes can provide specific information about the nature of the issue.

If the drain pump fails the test or exhibits signs of malfunction, consider contacting LG customer support or a professional technician for further assistance. 

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