LG Washer Dryer: moisture accumulation, burnt smell
What is this symptom?
Experiencing moisture accumulation and a burnt smell from your LG washer-dryer combo? These issues commonly arise due to lint buildup, poor ventilation, or overheating components, leading to musty odors and potential appliance damage. Understanding the causes is crucial for effective resolution.
Important Tips for LG Models
- New LG washer/dryer units may emit temporary burnt smell during early cycles as insulation and internal components heat up
- LG washer/dryer combos require regular Tub Clean cycles to prevent musty odors from moisture and biofilm
Possible Causes
Lint buildup on heater or in venting system causing overheating and burnt odor
How to Identify: Strong burnt smell during drying cycles, restricted airflow, longer dry times, visible lint accumulation
Part: Dryer heating element, lint filter, exhaust vent
Moisture/mildew and mold growth due to residual water and poor ventilation
How to Identify: Musty odor, visible moisture on gasket or drum, repeated condensation after cycles
Part: Drum, door gasket, internal seals
New appliance off‑gassing or temporary smells from heated rubber/plastic
How to Identify: Burnt smell only in first few cycles with a new unit that then fades
Part: Rubber gasket and internal components
Overheating motor or electrical component failing
How to Identify: Burnt electrical odor (rather than lint, unusual noises, intermittent operation
Part: Drive motor, wiring harness
DIY Solutions
Clean lint filter and exhaust vent thoroughly
- Unplug the machine; remove and clean the lint filter
- Vacuum lint trap housing and use a flexible vent brush to clean the dryer vent duct back to exterior
- Ensure exhaust vent is free from kinks or obstructions
Run monthly tub/drum clean cycles to reduce moisture and odor
- Add manufacturer‑recommended cleaning solution or 1 cup white vinegar to the drum
- Select and run the Tub Clean/high‑temperature cycle
- Leave door open after to allow complete drying
Improve ventilation around machine
- Ensure adequate space (6+ inches) around the unit
- Leave the door open after use to allow airflow
- Check room ventilation
Next step
Choose the next step for moisture accumulation, burnt smell
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
Dryer Lint Filter
Captures lint from exhaust air before it reaches the dryer vent path.
- Typical part-only price
- $15 - $55
- DIY difficulty
- Easy
- Estimated time
- 5 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.
Heating Element
Heats the water or air inside the appliance to the required temperature.
Door Gasket
Creates a watertight seal around the door to prevent leaks during operation.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
Model-compatible Washer 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.
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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 worn drive motor or blower belt and idler pulley
Internal vent and heater housing deep clean / repair
Electrical harness or control board repair
When to Call a Professional
Preventive Maintenance
-
Clean lint filter after every load: Lint buildup and reduces fire risk
Frequency: after each use -
Deep vent cleaning: Blocked airflow and overheating
Frequency: annually -
Run tub/drum clean cycle: Mildew and musty odors
Frequency: monthly
Frequently Asked Questions
Why is my LG Washer Dryer moisture accumulation, burnt smell?
How do I fix LG Washer Dryer moisture accumulation, burnt smell myself?
How much does it cost to fix moisture accumulation, burnt smell?
When should I call a technician for moisture accumulation, burnt smell?
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 venting system causing moisture buildup and overheating.
- Faulty heating element leading to overheating and burnt smell.
- Damaged door seal allowing moisture to escape and accumulate inside the panel.
User Suggested Solutions
-
Inspect and clean the venting system. Disconnect the dryer, remove the vent hose, and clear any lint or debris. Reattach and test the dryer.
-
Check the heating element for damage. If burnt or malfunctioning, replace the heating element. Disconnect power, remove the back panel, and replace the element with a new one.
-
Inspect the door seal for tears or damage. If damaged, replace the door seal to prevent moisture escape. This typically involves removing the door and replacing the seal.
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
moisture inside panel during dry cycle, burnt plastic-y smell
Washer/dryer replaced by LG technician due to moisture issue.
Source: Reddit r/appliancerepair
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