What should I do if the CHECK VENT indicator is blinking?

The CHECK VENT indicator signals a serious reduction in exhaust airflow, which is not a dryer failure but indicates blockages in your home's exhaust system. Check if the ductwork is too long, has too many turns, or has a partial blockage due to lint buildup. The ductwork should be checked and cleaned immediately by a duct cleaning service, though the dryer can still be used with longer drying times and increased energy consumption.