Lg Washer Dryer: incorrect water line connections

Professional Repair Guide

What is this symptom?

If your LG Washer Dryer is experiencing incorrect water line connections, you may notice improper water temperature during washing or rinsing cycles, potential IE errors, or overall performance issues. This is often due to hot and cold water hoses being reversed or misaligned at the inlet valves. Ensure your connections are correct to restore optimal function.

Urgency: Medium

Important Tips for Lg Models

  • LG washers and washer‑dryer combos require correct matching of hot/cold hoses to their inlet ports; reversed hoses can cause warm laundry even in cold cycles. (

Possible Causes

Hot and cold water inlet hoses reversed

How to Identify: Laundry feels warm when cold cycle expected; test cold setting and feel incoming water temperature; IE (no water supply error may occur if flow restricted. Hoses attached opposite of marked hot/cold supply valves.

Part: Water inlet hoses and inlet ports

Hoses connected correctly to faucets but misaligned at washer inlet valves

How to Identify: Cold water line physically on hot inlet port and vice versa even if faucets have correct supply; check labels/colors on washer and hoses. (

Part: Washer water inlet valve connections

Kinked or crushed inlet hoses restricting proper flow

How to Identify: Slow fill or IE error and visible bends/kinks in hoses near back of machine. (

Part: Water inlet hose

DIY Solutions

Reconnect water inlet hoses correctly

Easy 10-20 minutes
Tools Needed: adjustable pliers, bucket/towels
  1. Turn off both hot and cold water supply valves.
  2. Place bucket/towels to catch water, unscrew both inlet hoses at washer and faucets.
  3. Match the red hot water hose to the washer’s hot (red/H) inlet port and hot faucet; match the blue cold hose to cold (blue/C) inlet port and cold faucet.
  4. Hand tight‑en connections then give an extra 1/4–1/2 turn with pliers, avoiding overtightening.
  5. Turn on water supply and check for leaks; run a cold wash to confirm correct water temperature.
⚠️ Safety First: Shut off water supply before disconnecting hoses to avoid flooding.

Straighten or replace kinked inlet hoses

Moderate 15-30 minutes
Tools Needed: bucket/towels, possibly new hoses
  1. Turn off water supply and disconnect inlet hoses.
  2. Inspect hoses for kinks or crushes; straighten any bends or replace if damaged.
  3. Reconnect hoses properly to hot/cold inlets and supply valves.
  4. Turn on water supply, check for leaks, and test filling function.
⚠️ Safety First: Check hose condition; cracked or weakened hoses should be replaced to prevent future leaks.

Professional Repairs

Replace defective water inlet valve assembly

Estimated Cost: $50 - $150 for parts

When to Call a Professional

Persistent wrong temperature or IE error after correcting hoses multiple times
Leaks from internal inlet valve area
Suspected faulty solenoid or water inlet valve assembly

Preventive Maintenance

  • Inspect water inlet hoses: Kinks, wear, and incorrect connections that can lead to poor fill performance or temperature issues. (
    Frequency: annually
  • Replace inlet hoses every 5 years: Hose failure and leaks. (
    Frequency: 5 years

Frequently Asked Questions

Why is my LG Washer Dryer incorrect water line connections?
Common causes include reversed hot and cold hoses, misalignment at valves, or kinked hoses restricting flow.
How do I fix LG Washer Dryer incorrect water line connections myself?
Turn off water supply, disconnect hoses, and reconnect them to the correct hot/cold inlets.
How much does it cost to fix incorrect water line connections?
Professional repairs typically cost between $50 - $150 for parts if the water inlet valve needs replacement.
When should I call a technician for incorrect water line connections?
Call a technician if you're unable to fix it yourself, or if problems persist after correcting the hose connections.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

85%
DIY Success Rate Difficulty: DIY

Common Issues Reported by Users

  • Hot and cold water supply lines are reversed during installation.
  • Incorrect labeling or misinterpretation of water inlet connections on the washer dryer.
  • Faulty or damaged water inlet valve causing improper water flow direction.

User Suggested Solutions

  1. Shut off the water supply, disconnect the hoses, and reconnect them correctly according to the color coding (usually blue for cold and red for hot). Ensure the connections are tight to prevent leaks.

  2. Check the washer dryer manual for specific instructions on water line connections. Follow the diagram to ensure proper installation.

  3. If the water inlet valve is suspected to be faulty, replace it by turning off the power, removing the back panel, and disconnecting the old valve. Install the new valve and reassemble the unit.

Analysis based on 1 community discussions
View Sources

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

  1. Installer switched hot and cold lines on my washer and dryer

Community Discussions

hot and cold lines switched

Using the steam function should not damage the dryer despite the incorrect connections.

Pro needed View on Reddit →

Source: Reddit r/appliancerepair

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