Lg Washer Dryer: not stopping water flow

Professional Repair Guide

What is this symptom?

Is your LG washer dryer continuously filling with water, even after the cycle has completed? This issue can lead to overflows and water damage. Common causes include a faulty water inlet valve, a malfunctioning pressure switch, or even control board issues. Addressing this promptly is crucial to prevent further complications.

Urgency: High

Important Tips for Lg Models

  • Incorrect drain hose placement can cause water to flow back into the washer giving impression of continuous fill
  • Official LG documentation notes water can remain in drum after cycle and water behavior may differ on washer/dryer combos

Possible Causes

Faulty water inlet valve stuck open

How to Identify: Water continues to fill even when cycle should have stopped or with power disconnected; water flows into drum without command

Part: Water inlet valve

Malfunctioning water level/pressure switch or pressure sensor

How to Identify: Washer doesn’t sense correct water level, overfills; pressure hose may be kinked, blocked, or cracked

Part: Water level pressure switch or air dome/pressure hose

Control board or electronic control malfunction

How to Identify: Other causes eliminated and washer still continues water fill; error codes may be present or intermittent electronics behavior

Part: Main control board (electronic control)

Drain hose installation or siphoning issue

How to Identify: Incorrect drain hose height can cause backflow or siphoning patterns misinterpreted as continuous fill; hose too deeply into drain

Part: Drain hose placement

DIY Solutions

Inspect and replace water inlet valve

Moderate 45-90 minutes
Tools Needed: screwdriver set, multimeter, bucket/towels
  1. Turn off water supply and unplug washer dryer
  2. Access back panel and locate water inlet valve
  3. Test valve solenoids with multimeter for continuity; if stuck open, obtain correct replacement
  4. Remove wiring and hoses, install new inlet valve, reconnect everything and test cycle
⚠️ Safety First: Disconnect power and water before servicing

Check and clear pressure hose or replace pressure switch

Advanced 60-120 minutes
Tools Needed: screwdriver set, flashlight, compressed air or small brush
  1. Unplug appliance and remove appropriate panels to access pressure tube and switch
  2. Inspect pressure hose for kinks, clogs, cracks; gently clear or replace hose
  3. Test pressure switch with blower and multimeter and replace if defective
  4. Reassemble panels and test washer dryer cycle
⚠️ Safety First: Ensure machine is unplugged

Professional Repairs

Control board diagnosis and replacement

Estimated Cost: $150 - $400

Professional diagnostic service for complex electrical faults

Estimated Cost: $100 - $200 (diagnostic)

When to Call a Professional

Water continues to fill after checking inlet valve and pressure system
Visible electronic error codes or control anomalies
Uncomfortable performing electrical/mechanical diagnostics

Preventive Maintenance

  • Regular cleaning of inlet hose filters: Clogs and debris that may affect inlet valve operation
    Frequency: every 3-6 months
  • Inspect pressure tube for kinks or damage: Pressure misreads causing overfill
    Frequency: every 6 months

Frequently Asked Questions

Why is my LG Washer Dryer not stopping water flow?
The top causes include a faulty water inlet valve, a malfunctioning pressure switch, or control board issues.
How do I fix LG Washer Dryer not stopping water flow myself?
Inspect the water inlet valve for issues, or check the pressure hose and switch for clogs or defects.
How much does it cost to fix not stopping water flow?
Professional repairs can cost between $150 - $400 for control board replacement or $100 - $200 for diagnostics.
When should I call a technician for not stopping water flow?
Call a technician if DIY solutions do not resolve the issue, or if electrical faults are suspected.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

65%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Faulty water inlet valve
  • Clogged or kinked water supply hose
  • Defective pressure switch or water level sensor

User Suggested Solutions

  1. Inspect and replace the water inlet valve. Disconnect the washer from power and water supply, remove the valve, and test for continuity with a multimeter. If defective, replace it with a new one.

  2. Check the water supply hoses for kinks or clogs. Disconnect the hoses and inspect for blockages or bends. Clear any obstructions and ensure hoses are properly positioned.

  3. Test the pressure switch for proper operation. Access the switch, clean any debris, and check for continuity. If faulty, replace the switch.

Analysis based on 1 community discussions
View Sources

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

  1. LG WM3488HW Washer/Dryer Combo FE error - only with hot wate...

Community Discussions

Water continues to flow in when starting wash on warm or hot, resulting in FE error.

Replaced hot water valve but issue persists.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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