Duegal23
Jul 28, 2010, 04:04 AM
Usually there are four wires (red,white,green and yellow)on the control terminal on a furnace. I came across this Janitrol Furnace which has only three terminal wires (red,white and green) no yellow. My question is how can I connect an AC Compressor controls (yellow and common) if there is only three wires one the furnace?