LG Washing Machine: overfilling
What is this symptom?
Experiencing overfilling issues with your LG washing machine? This problem occurs when the machine continues to fill with water, exceeding the normal level and potentially causing overflow. Common causes include a faulty water inlet valve or a malfunctioning water level pressure switch. Understanding these issues can help you address the problem effectively.
Important Tips for LG Models
- Incorrect drain hose setup can cause water to flow back into drum and simulate overfilling; check according to LG install guidelines
Possible Causes
Faulty water inlet valve that fails to close
How to Identify: Machine continues to fill with water even when it should stop; shutting off power does not stop water flow when valve mechanically stuck open.
Part: Water inlet valve
Malfunctioning water level pressure switch or sensor
How to Identify: Water level isn’t correctly detected, causing the machine to overfill; error codes (e.g., FE/PE may display on some models.
Part: Water level pressure switch / sensor
Blocked or kinked pressure hose feeding the level sensor
How to Identify: Incorrect water-level readings causing overfill; hose blockage or kink detectable upon inspection.
Part: Pressure hose to water level sensor
Incorrect drain hose installation causing water backflow
How to Identify: Water appears to fill machine even when not running due to water returning from drain; hose inserted too deeply or clogged.
Part: Drain hose
Excessive incoming water pressure
How to Identify: Water enters washer even at power off if water pressure exceeds valve closure capability.
Part: Incoming water supply/valve
DIY Solutions
Check and adjust drain hose position
- Turn off water supply and power.
- Inspect drain hose height and ensure it meets manufacturer recommendation (not inserted too deep into standpipe).
- Clear any visible clogs in drain hose and ensure proper connection.
Inspect pressure hose and water level sensor connection
- Disconnect washer from power and water.
- Remove access panel to reach pressure hose from drum to sensor.
- Check hose for blockages, kinks, or disconnections and clean or reconnect as needed.
- Reassemble and test machine water fill behavior.
Next step
Choose the next step for overfilling
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Water Inlet Valve
Controls the flow of hot and cold water into the appliance.
- Typical part-only price
- $25 - $60
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Pressure Switch
Detects the water level inside the tub and signals when to start or stop filling.
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
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.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
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.
Washing Machine Cleaner Tablets
Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.
Braided Washer Inlet Hoses
A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.
Washer Drain Hose Holder
Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Professional Repairs
Replace water inlet valve
Replace pressure switch or level sensor assembly
When to Call a Professional
Preventive Maintenance
-
Inspect and clean pressure hose and sensors: Incorrect water level detection leading to overfill
Frequency: annually -
Check water inlet valve and hoses: Valve sticking due to debris or pressure issues
Frequency: annually
Frequently Asked Questions
Why is my LG Washing Machine overfilling?
How do I fix LG Washing Machine overfilling myself?
How much does it cost to fix overfilling?
When should I call a technician for overfilling?
References & Sources
- LG support on water backflow issues Official
Community Analytical Insights
Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions
Common Issues Reported by Users
- Faulty pressure switch
- Clogged or kinked pressure hose
- Malfunctioning water inlet valve
User Suggested Solutions
-
Inspect and replace the pressure switch if faulty. Disconnect power, locate the pressure switch, and test it with a multimeter. Replace if it does not show continuity.
-
Check the pressure hose for clogs or kinks. Disconnect the hose from the pressure switch and the drum, and clean or replace it as necessary.
-
Test the water inlet valve for proper operation. Disconnect the water supply, remove the valve, and check for blockages or test it with a multimeter. Replace if defective.
Limited-source guidance; percentages and success-rate claims are not shown
View
Sources
Data compiled from real discussions on r/appliancerepair and r/Appliances:
Community Discussions
Washer overfilled with water and door blew open
Pressure hose was likely disconnected or the pressure switch was bad.
Source: Reddit r/appliancerepair
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