Installing That , Guide from Google says Not compatible with our "Heat
Pump system ,we have (R) wire/ / (Y)/ (G)/ (W2))/(O)/ ( C or Gray )/may
I hook up to this unit & have proper function
Thank you for your response , got in touch w/ Nest , installed, and
found (no main power coming from switch @ furnace , arranged for an HVAC
tech to come and diagnose & repair, looking forward to using this unit .
