USSC Pellet Stove (Convection/Room) Blower. The convection blower is responsible for circulating air around the stoveand intoroom.If the blower is not working as it should, the amount of heattransferred from the unitinto your home may be reduced. A malfunctioning blower can also cause high-limit switches to trip and error codes. If the fan hasbeen cleaned thoroughly andis not moving the same volume of airasit once did, it may need to be replaced.