LG Dryer d80 Error Code — Cause & Fix | DecodeAppliance

What's Happening

The d80 code is a flow-sense warning indicating the dryer has detected that its exhaust duct is about 80% blocked. LG dryers with Flow Sense technology measure airflow at startup and during cycles. Blockages are most often caused by lint buildup deep in the duct run, a kinked or crushed flexible duct hose behind the dryer, a clogged exterior vent cap, or a duct run that is too long or has too many bends. Restricted airflow traps heat in the drum, causes poor drying performance, and significantly increases fire risk.

How to Fix It

Disconnect the dryer from power and pull it away from the wall. Disconnect the exhaust duct from the back of the dryer and the wall. Use a dryer vent cleaning kit (a long flexible brush) to clear lint from the entire duct run. Inspect the flexible duct hose for kinks, crushing, or holes and replace it if damaged — use rigid metal duct wherever possible. Check the exterior vent cap and clear any debris or bird nesting. Ensure the total duct length does not exceed manufacturer limits (typically 35 feet minus 5 feet per 90° elbow). Reconnect and run a timed dry cycle to confirm the code has cleared.

Frequently Asked Questions

What does d80 mean on an LG dryer?

d80 is an LG Flow Sense warning indicating the exhaust duct is approximately 80% blocked. It does not mean the dryer is broken — it means the venting system needs cleaning or correction before the dryer can work safely and efficiently.

How do I clear the d80 code on my LG dryer?

Clean the entire exhaust duct from the back of the dryer to the exterior vent cap using a dryer vent brush kit. Also replace any kinked flexible hose with rigid metal ductwork and make sure the exterior vent flap opens freely. Once airflow is restored, the code should clear on its own after a test cycle.

Is d80 on an LG dryer a fire hazard?

Yes, if ignored. Lint is highly flammable, and a blocked duct traps heat in the dryer and duct. The U.S. Fire Administration lists clogged dryer vents as one of the leading causes of residential dryer fires. Address a d80 code as soon as possible.

How often should I clean my LG dryer vent?

Most manufacturers and fire safety organizations recommend cleaning the full dryer duct at least once a year. If you have a large household, dry heavy items frequently, or have a longer duct run, cleaning every 6 months is better.

d80LG Dryer — LG Dryer d80 Error Code

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