What should I do if the Check Vent indicator is blinking?

A blinking Check Vent indicator means there is a serious restriction in your home's exhaust system, such as ductwork that is too long, has too many turns, or has a partial blockage due to lint buildup. The dryer can still be used in this condition, but drying times will be longer and energy consumption will increase. You should contact a duct cleaning service to have your exhaust system cleaned and inspected, as this is not covered by the dryer warranty. (Page 29)