Dryer shows E12 and stops; may be associated with very long drying times.

Safety first: Disconnect power before moving the dryer or removing the vent hose.

• Inspect vent hose: Pull the dryer away from the wall and check the vent hose for kinks, crushing, or lint buildup. Remove the hose and clean thoroughly.
• Check external vent: Go outside and inspect the wall vent or grille. Remove any lint, nests, or obstructions. Ensure the flap opens freely when air flows.
• Shorten hose if possible: Use the shortest, straightest route for the vent hose to improve airflow.
• Clean internal duct: If accessible, vacuum lint from the internal exhaust duct and fan housing.
• Test run: Reconnect the hose, restore power, and run a timed cycle. If E12 reappears, the airflow sensor or thermal protection devices may need further diagnosis.