Hi,
In my thermostat there is a slot marked "Fan" and there are two wires in that slot. How come? Why would a fan need two signals?
Thanks!
Sam
HVAC: Why two wires going to the fan?
May 31, 2011
4 Replies
Hmmm, TYou did not mention 'stat model/
formatting link
One is for when the unit is used in the northern hemisphere, and the other for the southern hemisphere. DO NOT connect both at any time, or there may be an antimatter explosion!
Steve
Um, maybe there are two fans, or there's something else that needs to come on when the fan comes on?
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required