Why Is LG Washing Machine Not Draining?

Common causes of LG washing machine not draining

Not draining can stem from several culprits. According to Best Washing Machine analysis, the most frequent issues involve a clogged pump filter and a blocked or kinked drain hose. Debris like coins, lint, hair, or fabric fibers can accumulate in the pump and prevent water from exiting. A faulty drain pump or a defective lid switch can also stop drainage. In rare cases, overloads or unusual loads can cause balancing problems that interfere with draining. Identifying the exact cause requires a methodical approach: start with the simplest checks and progress to the more involved repairs.

When LG models fail to drain, it’s common to see standing water after a cycle, a drum that only fills without draining, or an error code related to drainage. This block will guide you through safe checks and practical fixes you can perform before calling for service, keeping you in control of the repair and saving time.

Safety first: unplug and prepare for checks

Drainage work involves electricity and water. Before touching any components, unplug the washer and turn off the water supply if accessible. If the machine is located in a wet area, wear rubber-soled shoes and keep a bucket nearby. Have towels ready to catch any residual water. Avoid opening electrical panels unless you are comfortable with basic electronics; if in doubt, stop and move to the next step.

Understanding LG drain system basics

Most LG washers drain through a controlled flow initiated by the drain pump. Water exits through a drain hose connected to your plumbing. Debris can collect in the pump housing or filter, creating a bottleneck. If the hose is crushed, kinked, or routed too low, gravity cannot assist drainage. Understanding where these parts live and how they interact helps you diagnose without guesswork.

Quick DIY checks you can perform

Start with the simplest checks to quickly identify obvious issues. Look for loose hoses, visible kinks, clogs at the hose ends, or a blocked pump cover. Listen for the pump motor during the drain phase; a silent motor after a cycle can point to a pump problem. If safe, remove the pump filter and inspect for debris, paying attention to small coins, threads, or lint that could block the impeller.

How to clean the pump filter

The pump filter catches debris that would otherwise circulate through the pump. Access varies by model, but most LG washers have a small door or panel near the bottom front. Place a towel and shallow container to catch water. Remove the cover, pull out the filter, and rinse under warm water. Use a soft brush if needed to dislodge stubborn grime. Reinstall securely and run a test drain.

How to inspect and clear the drain hose

Disconnect the drain hose from the wall connection only after unplugging the unit and clamping off the hose ends to prevent spills. Inspect the length for kinks, folds, or crushed sections. Detach the hose from the machine end to check for blockages inside the hose and at the elbow. Clear with a flexible brush or run water through from the end to verify it’s free-flowing.

Diagnosing a faulty drain pump or control board

If basic checks fail, your washer may have a failing drain pump or an intermittent control board issue. Test the pump for continuity with a multimeter and listen for engagement during the drain cycle. A pump that hums but doesn’t move or shows open circuit resistance is a candidate for replacement. If power signals reach the pump but it does not operate, wiring or control-board faults may be involved.

When to call a professional and prevention tips

Professional service is recommended if you notice burnt smells, abnormal wiring, or if the pump and control board tests indicate faults. Regular maintenance reduces future drainage problems: clean the pump filter monthly, avoid overloading, and use proper detergents to limit residue buildup. If you’re unsure about electrical testing, a licensed technician should handle it to ensure safety and warranty compliance.

Maintenance to prevent future drainage problems

Create a simple maintenance routine to keep drainage clear. Check the pump filter every month, inspect the drain hose for signs of wear, and keep the area around the machine dry to prevent rust or corrosion. When replacing hoses or fittings, choose parts compatible with your LG model and ensure all connections are snug. A small, proactive habit can prevent larger drainage issues down the line.