Thermostat wiring
First off, thanks to Soundguy. He has provided lots of useful advice! Second, sorry for asking someone to hold my hand on this, but I have heard incorrect furnace wiring can be a costly error! I...
Forum Discussion
Blue 12V - (not used...wire cap it)
Red 12V + (connect to Rc and then connect jumper from Rc to R)
Yellow (connect to Y....compressor)
White (connect to W----furnace)
NOW you have to make decision on the Green & Grey wiring
Green is a/c fan high speed and Grey is a/c fan low speed
You would have to install a mini switch to be able to switch between hgh or low
OR just wire one of them to the 'G' terminal
I used just the High (no switch) because a/c should use high fan (low fan with a/c can cause a/c unit to freeze due to low air flow)
Red 12V + (connect to Rc and then connect jumper from Rc to R)
Yellow (connect to Y....compressor)
White (connect to W----furnace)
NOW you have to make decision on the Green & Grey wiring
Green is a/c fan high speed and Grey is a/c fan low speed
You would have to install a mini switch to be able to switch between hgh or low
OR just wire one of them to the 'G' terminal
I used just the High (no switch) because a/c should use high fan (low fan with a/c can cause a/c unit to freeze due to low air flow)
