LG Dryer F0 Error: Lint filter missing or unseated
LG dryer error — here’s what you need to know. The F0 error code on your LG dryer indicates Lint Filter Missing or Improperly Seated. This is a Low severity issue. What Does F0 Mean on an LG Dryer? The F0 code means the dryer’s control system has detected that the lint filter is not […]
~98%
DIY Fixable
From create-lg-dryer-extra.sh
Typical Repair Cost
2 – 5 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Do not bypass or ignore the F0 error. Running a dryer without a lint filter allows lint to reach the heating element and exhaust duct, creating a serious fire hazard over time.
Can I reset the code?
Yes. Correctly insert the lint filter and the F0 code will clear automatically when the sensor confirms the filter is present. No additional reset steps are needed.
When to stop immediately?
Stop if you notice: The lint filter is missing and cannot be located — do not run the dryer until a replacement filter is installed., F0 persists even with the filter correctly inserted, indicating a sensor or wiring fault that needs diagnosis..
Symptoms You May Notice
Dryer will not start when Start is pressed
The machine powers on and accepts cycle selection but refuses to begin tumbling, preventing any drying from occurring until the filter situation is corrected.
F0 code displayed immediately at cycle start
The error appears right when Start is pressed rather than during the cycle, confirming the filter sensor check happens before the cycle begins.
Lint filter visibly absent from its slot
Opening the dryer door and checking the filter slot reveals the filter was not reinserted after the last cleaning.
Filter is present but sits loosely or at an angle in the housing
The filter was reinserted but not pushed fully down into the housing track, leaving a gap that the sensor interprets as missing.
Possible Causes
Lint filter not reinserted after cleaning
The filter was removed for cleaning and accidentally left out, allowing the sensor to detect its absence and block cycle start.
DIY PossibleFilter inserted incorrectly
The filter is placed upside-down or at an angle so it does not reach the sensor contact point inside the filter housing.
DIY PossibleDamaged filter frame or faulty filter sensor
A cracked filter frame prevents full insertion, or the detection sensor inside the housing has failed and triggers F0 even with the filter correctly installed.
Requires ProfessionalSafe Checks You Can Do
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1
Check and reinsert the lint filter
Open the dryer door and locate the lint filter slot (typically on the inside of the door frame or just inside the drum opening). Remove the filter if present, clean it under warm water if clogged, dry it thoroughly, and reinsert it fully until it sits flush and level.
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2
Verify the filter is oriented correctly
The filter has a correct top and bottom — look for orientation arrows or asymmetric frame tabs that indicate which end inserts first. Push down gently but firmly until the filter is fully seated with no rocking.
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3
Inspect the filter frame for damage
Examine the plastic frame of the filter for cracks or warping that prevent it from sitting flat. If the filter frame is damaged, order a replacement filter by the dryer's model number before running another cycle.
When to Call a Professional
Contact a qualified technician if:
- F0 persists after inserting a known-good filter, confirming the presence sensor or its wiring has failed.
- The filter housing slot is damaged or bent so no filter can sit flush, requiring housing repair or replacement.
- Excessive lint buildup is found inside the dryer cabinet from prior operation without a filter, requiring professional cleaning of the heating element and exhaust path.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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