LG Dryer: water tank full error
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.
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
- Turn off the dryer and ensure it is stopped.
- Remove the water collection tank/front reservoir.
- Empty water into a sink.
- Inspect and clean the tank edges.
- Reinsert the tank fully until you hear the locking click.
Unkink or reposition drain hose
- Turn off the dryer and pull it away from the wall.
- Inspect the drain hose for kinks or pinches.
- Ensure the hose runs downward to a drain and is not looped up high.
- Straighten or replace hose if damaged.
- Test another drying cycle.
Prime drain pump (for initial use)
- Remove the condensate tank.
- Slowly pour ~1.5 L of water into inlet to fill pump and hose.
- Reinsert tank and run a short cycle.
- Check if error clears.
Next step
Choose the next step for water tank full error
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
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
- Typical part-only price
- $15 - $30
- 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.
Model-compatible Dryer 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.
Dryer Vent Cleaning Kit
Helps remove routine lint buildup from an accessible dryer vent path. It does not diagnose or repair an E-code or failed component.
Lint Trap Cleaning Brush
A narrow brush for routine cleaning around an accessible lint screen and housing.
Dryer Vent Hose Kit
A replacement exhaust duct option for visibly crushed or damaged external venting. Check diameter, length, local code, and installation clearance.
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 condensate drain pump
Diagnose and replace water level sensor or control module
When to Call a Professional
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?
How do I fix LG Dryer water tank full error myself?
How much does it cost to fix water tank full error?
When should I call a technician for water tank full error?
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 or dirty water tank filter
- Faulty water level sensor
- Malfunctioning control board
User Suggested Solutions
-
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.
-
Test the water level sensor for continuity and replace it if it is faulty. This may require a multimeter for testing.
-
Inspect the control board for any visible damage or burn marks. If necessary, replace the control board to resolve the issue.
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
water tank full error
Disassemble and clean the dryer to resolve the water tank full error.
Source: Reddit r/appliancerepair
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