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Removing my old Honeywell thermostat to replace with the nest. I live in Florida and my ac unit is 10 years old. I’m not sure if I have conventional heat or a pump. I took a picture of the old one but I cannot upload it.

  • Blue went to C
  • Green went to G
  • Yellow went to Y
  • Orange went to O/B or W
  • Red went to R with a silver little splitter thing to RC
  • White went to W2/AUX.

After following the nest instructions I could not get the unit to power on.

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    Post the photo to imgur and post a link here, then we can get it uploaded for you. Also, can you post photos of the wiring at your air-handler/furnace? – ThreePhaseEel Dec 1 '19 at 13:54
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    You won't be able to hook this up if you don't know basics like furnace or heat pump. It may be tiem to call a Nest installer. – Harper - Reinstate Monica Dec 2 '19 at 2:53
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    Red wire should go to Rc on the Nest if it has one (or just R), but the nest will need to be programmed to work with a conventional or heat pump. If you don't know, that's a problem. It's probably a heat pump based on the old wiring, but you need to know for sure. – JPhi1618 Dec 2 '19 at 16:33

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