How to wire my greentek hrv to kicks on the furnace fan on low of a heil furnace?
I had a airconditioner installed in August and for some reason they unhook my hrv so now the hrv turns on but doesn't request the furnace fan to come on. So now it's not circulating the air in my house properly. I notice that there is a red wire unhooked at the panel in the furnace but I don't know were it goes