I went through the set up and got as far as the wiring which I was told to contact Nest support to confirm compatibility. Based on what I’ve found X2 is the same as W2 but the set up still said I needed to contact support. We loved our Nest thermostat at out last house and really want and need one in this house. Current thermostat sucks
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Try this wiring.
Black - X2 to * (set as emergency heat)
White - W1 to W2/AUX (set as AUX heat)
Red - RC to Rc (jumper to R not needed)
Orange - O to OB
Yellow - Y to Y1
Green - G to G
Blue - B to C
Do a reset to factory defaults before you set it up again
Patrick_Caezza, thanks for lending a hand — your response is detailed and complete as always.
Lindsijoe, I hope you've got the answer you're looking for. Let us know if there's anything else.
Just checking in to make sure that you've seen my response. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.