Since you only have 5 wire thermostat wire we will have to improvise from the standard wire color code but if you wire it EXACTLY as I state below it will work perfectly! Below at the air handler connections, when I say outdoor unit red, white, green etc... I mean the actual thermostat cable wires themselves in the cable itself at the air handler going to the outdoor unit, not the actual factory wires at the outdoor unit. Please ask if you don't understand any part of this wiring scheme! It can be a little confusing since we only have 5 wires to connect with!
At the thermostat location wire:
Red to R
Yellow to Y
Blue to B
Green to G
White to E and use a small piece of wire to jumper over to Aux.
At the outdoor unit location wire:
Red to factory Red
Blue to factory Blue
Yellow to factory Yellow
White to factory purple
Green to factory Brown
Now for the tricky part. At the air handler wire:
*Thermostat Red to Outdoor unit Red to Factory Red (all three together)
*Thermostat White to Outdoor unit White to Factory White/Black and Factory White/Blue (all four together)
*Thermostat Green to Factory Black/Green
*Outdoor unit Green to Factory Brown
*Thermostat Blue to Outdoor unit Blue (no factory connection in air handler)
Thermostat Yellow to Outdoor unit Yellow (no factory connection in air handler)
***Pay special attention to the green field thermostat wires at the air handler. They both connect to different wires at the air handler and NOT to each other!
This wiring scheme should work like a champ in both cool, heat and emergency heat. It will also turn on the aux heat when the outdoor unit goes into defrost like it's supposed to!
Phewww that was a LOT of typing! :P
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