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Nest thermostat

HectorAOlivera
Community Member

‎10-31-2023 04:03 AM

I have a hot water boiler and a central air conditioning for heating a cooling in my house. I been upgrading the thermostats in my house from the basement to my second floor with nest thermostats . The first two are been use for heating only connected to a taco zone controller where I get my C wire from. 

Now I'm facing trouble wiring my last thermostat that controls heat in my top floor and my central ac for the all house. I been suggest by the home app based on the wires I have to use nest learning 3rd gen. but when I install the thermostat in the base does not recognized  C wire. I checked for 24 v and C wire is fine.

I been looking everywhere for information about this situation and  did not get anywhere. Does anyone had this problem solved?

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RenzJ
Community Specialist
Community Specialist

‎11-02-2023 12:35 PM

Hi HectorAOlivera,

 

Thanks for posting here in the Google Nest Community forum. We'd be happy to take a look into this for you. This doesn't happen normally for a heating and cooling system, but we need more information before we can conclude. Please answer the following:

  1. Are you from North America or Europe? 
  2. What type of Nest Thermostat do you have? 
  3. Send a picture of your current wiring and your zone control board wiring.
  4. When did you purchase the last thermostat? 
  5. Is this the first time you set it up, or  has this been setup before? 

I look forward to your response.

 

Cheers,

Renz

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