“going from nest to honeywell RTH9585WF my nest has 6 wires - YELLOW (Y); BLUE (C) ;WHITE (W) ;GREEN (G); RED (R) ORANGE( *O) can I use all these wires? if so where does the orange wire go?”

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• Hi Vicky, all of your wires will be used. It looks like your system may be a heat pump application with backup heat. If so, Y to Y, C to C, W to W2/ Aux, G to G, R to R, O to W-O/B terminal. -Joey

  Answered by Resideo Team 1 year ago

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