LG d90 — Exhaust Duct 90% Blocked
What This Code Means
Severe duct blockage — 90% restriction detected by Flow-Sense. The dryer will continue to run but at risk of overheating, tripping the thermal fuse, and potentially causing a fire.
Common Causes
- Heavy lint buildup over years without cleaning
- Duct elbows packed with accumulated lint
- Damaged duct allowing lint to escape and pack in the wall cavity
DIY Steps to Try First
- Stop the dryer immediately.
- Clean the lint trap.
- Inspect and clean the full duct run before restarting.