Lg Dryer: water tank full error

Professional Repair Guide

What is this symptom?

Experiencing an LG Dryer water tank full error? This issue typically occurs in ventless/condenser models when the dryer halts operation due to a full condensate tank indicator, even after emptying it. Common causes include a legitimately full tank, improperly seated tank, blocked drain hose, or sensor malfunctions.

Urgency: Medium

Important Tips for Lg Models

  • LG dryers with condenser/ventless systems use a removable water collection tank and drain pump; incorrect hose height or trapped air in pump can trigger persistent 'water tank full' errors.

Possible Causes

Legitimate full condensate tank

How to Identify: Indicator lights when the condensate tank is filled and the dryer stops; water is present in the removable reservoir.

Part: Water collection tank

Incorrectly seated or improperly inserted water tank

How to Identify: Tank appears empty but the display still shows full; removing and reinserting with a click clears false indication.

Part: Water container seating/latch

Blocked or kinked drain hose or improper hose routing

How to Identify: Water doesn’t drain properly; hose has kinks or is positioned too high; residual moisture stays in base.

Part: Drain hose

Air trapped in drain pump or initial use pump priming issue

How to Identify: New unit or after long idle shows persistent error until pump is primed; external small volume of water poured into inlet temporarily fixes.

Part: Drain pump

Faulty condensate drain pump or sensor malfunction

How to Identify: Empty tank and proper hose routing yet error persists; water remains trapped in base or doesn’t drain; diagnostic needed.

Part: Drain pump / water level sensor

DIY Solutions

Empty and correctly reinsert condensate tank

Easy 2–5 minutes
  1. Turn off the dryer and ensure it is stopped.
  2. Remove the water collection tank/front reservoir.
  3. Empty water into a sink.
  4. Inspect and clean the tank edges.
  5. Reinsert the tank fully until you hear the locking click.
⚠️ Safety First: Ensure dryer is off before removing tank.

Unkink or reposition drain hose

Moderate 10–20 minutes
Tools Needed: Flashlight
  1. Turn off the dryer and pull it away from the wall.
  2. Inspect the drain hose for kinks or pinches.
  3. Ensure the hose runs downward to a drain and is not looped up high.
  4. Straighten or replace hose if damaged.
  5. Test another drying cycle.
⚠️ Safety First: Disconnect power before moving dryer.

Prime drain pump (for initial use)

Easy 5 minutes
Tools Needed: Measuring cup
  1. Remove the condensate tank.
  2. Slowly pour ~1.5 L of water into inlet to fill pump and hose.
  3. Reinsert tank and run a short cycle.
  4. Check if error clears.

Professional Repairs

Replace faulty condensate drain pump

Estimated Cost: $50–$150

Diagnose and replace water level sensor or control module

Estimated Cost: $80–$250

When to Call a Professional

Persistent error after emptying tank and correcting hose routing
Signs of pump malfunction or electrical noise
Visible leaks from internal components

Preventive Maintenance

  • Empty condensate tank after each cycle: Tank full errors and overflow
    Frequency: Each use
  • Check and straighten drain hose periodically: Drain blockages and persistent errors
    Frequency: Monthly

Frequently Asked Questions

Why is my LG Dryer water tank full error?
Common causes include a legitimately full tank, improperly seated tank, or a blocked drain hose.
How do I fix LG Dryer water tank full error myself?
Try emptying and reinserting the tank, unkinking the drain hose, or priming the drain pump.
How much does it cost to fix water tank full error?
Professional repairs can range from $50 to $250, depending on the issue.
When should I call a technician for water tank full error?
If DIY solutions fail or if the issue persists, it's time to consult a technician.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

70%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Clogged or dirty water tank filter
  • Faulty water level sensor
  • Malfunctioning control board

User Suggested Solutions

  1. Remove the water tank and clean the filter thoroughly. Ensure there are no obstructions in the tank. Reinsert the tank and run a test cycle.

  2. Test the water level sensor for continuity and replace it if it is faulty. This may require a multimeter for testing.

  3. Inspect the control board for any visible damage or burn marks. If necessary, replace the control board to resolve the issue.

Analysis based on 1 community discussions
View Sources

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

  1. LG condenser dryer water full error

Community Discussions

water tank full error

Disassemble and clean the dryer to resolve the water tank full error.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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