LG Washing Machine: not draining properly

Professional Repair Guide

What is this symptom?

Experiencing issues with your LG washing machine not draining properly? If your washer fills and runs but leaves water in the drum, you might see error codes like OE. Common causes include a clogged drain pump filter or improper drain hose installation. Address these issues quickly to avoid further complications.

Urgency: Medium

Important Tips for LG Models

  • Official LG support highlights clogged drain filter and hose issues and specific installation height concerns

Possible Causes

Clogged drain pump filter

How to Identify: Standing water in drum after cycle; debris visible in filter housing; water drains after filter cleaning

Part: Drain pump filter

Improper drain hose installation or height

How to Identify: Too high/low hose placement relative to LG specs; siphoning or poor pump performance

Part: Drain hose installation

Control or sensor issues (e.g., water level sensor)

How to Identify: No mechanical blockage yet still no drain; error codes not solved by other fixes

Part: Control board/water level sensor

DIY Solutions

Clean drain pump filter

Moderate 15-30 minutes
Tools Needed: towel, bucket
  1. Unplug washer from power
  2. Open access panel at front bottom
  3. Place bucket/towels under(filter area)
  4. Unscrew and remove drain pump filter cap
  5. Clean out lint/debris and rinse filter
  6. Reinstall filter and close panel then test drain cycle
⚠️ Safety First: Ensure power is off to avoid electrical shock

Inspect and straighten drain hose

Easy 10-20 minutes
Tools Needed: flashlight, possibly bucket
  1. Unplug washer and pull away from wall
  2. Visually inspect drain hose for kinks or sharp bends
  3. Straighten any kinks and ensure hose is free of obstructions
  4. If needed, disconnect hose and flush to clear debris
  5. Reattach securely and test washer
⚠️ Safety First: Have bucket ready when disconnecting hose; unplug first

Check for hose blockages inside

Moderate 20-40 minutes
Tools Needed: bucket, long brush or plumber snake
  1. Turn off and unplug washer
  2. Disconnect drain hose at both ends
  3. Use brush or snake to clear internal blockages
  4. Flush hose with water
  5. Reconnect hose and test
⚠️ Safety First: Ensure proper reconnection to avoid leaks

Next step

Choose the next step for not draining properly

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Drain Hose

Carries waste water from the drain pump to your home's standpipe or sink drain.

$15 - $30 · Easy · 15-30 mins

Check fit & price
Possible related component

Pressure Switch

Detects the water level inside the tub and signals when to start or stop filling.

$25 - $65 · Easy · 15-30 mins

Check fit & price
Possible related component

Main Control Board

The central brain of the appliance that controls all components, cycles, and timings.

$120 - $280 · Medium · 20-40 mins

Check fit & price
Model number required

Model-compatible Washing Machine parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Washing Machine Cleaner Tablets

Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.

View maintenance supply
Maintenance supply

Braided Washer Inlet Hoses

A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.

View maintenance supply
Maintenance supply

Washer Drain Hose Holder

Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace faulty drain pump

Estimated Cost: $80 - $250

Professional diagnostic for control/sensor issues

Estimated Cost: $120 - $400+

When to Call a Professional

Water remains after cleaning filter and inspecting hose
Unusual noises from pump or visible motor failure
Error codes indicating pump/motor faults

Preventive Maintenance

  • Clean drain pump filter: Clogs that lead to drainage issues
    Frequency: every 1-3 months
  • Inspect drain hose for kinks: Blockages and improper drainage
    Frequency: quarterly

Frequently Asked Questions

Why is my LG Washing Machine not draining properly?
Common causes include a clogged drain pump filter, improper drain hose installation, or rare control/sensor issues.
How do I fix LG Washing Machine not draining properly myself?
You can clean the drain pump filter, inspect and straighten the drain hose, or check for blockages inside the hose.
How much does it cost to fix not draining properly?
Professional repairs can cost between $80 - $250 for a drain pump replacement and $120 - $400+ for diagnostics.
When should I call a technician for not draining properly?
If DIY fixes don't resolve the issue or if you suspect control/sensor problems, it's best to call a technician.

References & Sources

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

  • Clogged drain hose or filter
  • Faulty drain pump
  • Malfunctioning control board or relay

User Suggested Solutions

  1. Check and clear the drain hose and filter. Disconnect the washing machine from power, locate the drain filter (usually at the bottom front), and remove it to clean out any debris. Also, inspect the drain hose for kinks or clogs.

  2. Test the drain pump for functionality. Access the drain pump by removing the back panel or front panel (depending on model). Check for blockages and test the pump with a multimeter to ensure it is receiving power.

  3. Inspect the control board and relays. If the machine is stuck in a draining cycle, tap on the control board relays gently to see if it resolves the issue. If not, consider replacing the control board.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. LG WT4870CW washing machine won't stop draining cycle

Community Discussions

won't stop draining cycle

The issue was likely a stuck relay on the control board, which was resolved by tapping on the relay.

Source: Reddit r/appliancerepair

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