Can I Get My Furnace Fan to Function Independently of Heating/Cooling?
August 8, 2014 12:35 AM Subscribe
We have this furnace
. In the summer it would be nice if we could run only the fan (We don't have central air), but according to the manual, Fan Only Mode requires the R and G thermostat contacts be wired. As you can see, only the RC/RH and W contacts are wired
. Would simply swapping the orange wire from RC/RH to RH/G create the circuit needed for sweet, sweet fan action, or will it be necessary to run a new wire from G to the control board in the furnace, therefore requiring professional help?
posted by Alvy Ampersand to Home & Garden (4 answers total) 2 users marked this as a favorite
And why the heck would the RC/RH be wired together in the first place if there isn't a cooling unit?