Samsung Dryer Error Code LNT — Lint Filter Clogged (Smart Sensor)
What this means
The LNT error code appears on newer Samsung smart dryers with lint filter sensors. It is a maintenance reminder that the lint screen is excessively clogged, reducing airflow through the dryer. While the FILT code is a general reminder based on cycle count, LNT is triggered by actual airflow reduction detected by a differential pressure sensor or airflow meter.
Alternate codes: Lnt, LN
Step-by-step fix
4 stepsRemove and clean the lint filter
Pull out the lint filter from inside the dryer door or on top of the dryer. Remove all visible lint by hand or with a brush.
If you use dryer sheets, the lint filter can develop a residue that blocks airflow even when it looks clean.
Deep clean the lint filter (if needed)
Run water through the filter. If water pools on the mesh rather than flowing through, residue has built up. Scrub gently with a soft brush and mild dish soap, rinse, and let it dry completely before reinserting.
Perform this deep clean monthly if you use dryer sheets or fabric softener regularly.
Clean the lint filter housing
Use a long, narrow brush or vacuum attachment to clean inside the lint filter slot where lint can accumulate below the screen.
A vacuum crevice tool works well for reaching deep into the filter cavity.
Reset the code and run a test cycle
Reinstall the clean lint filter and start a new cycle. The LNT code should clear once the dryer detects improved airflow.
If the code persists after thorough cleaning, check the external dryer vent for blockage as well.
When to call a professional
This is a maintenance issue rather than a repair. If the LNT code appears even with a clean filter, the airflow sensor may be faulty — a technician can test it.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.