my attic fan switch just gave out and we are attempting to wire a new
one in. The fan has hi/low/off but there are 2 red wires, 1 blue wire
and 1 black wire coming out of the new switch. The way it is wired
now, it will go on low and high but not turn off. He is unsure about
what to do with the blue wire? how should this be wired?