What does the FlowSense indicator light mean and what should I do when it comes on?

The FlowSense indicator light means the dryer has detected clogging or blocking of the exhaust ducts, which decreases drying efficiency and can also cause fire. First check if the lint filter is full and clean it, then check if the duct is clogged and clean it if necessary. Make sure ductwork is not crushed or restricted, and avoid long runs of ducts or runs with multiple elbows or bends. (Page 21)