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BernardJ · 03-01-2022

Hi all.I have a system with 4 wires (R; W; Y and G).I have no C wire but I don't want to lose the fan control, so I want to connect a 24V transformer to the Nest Thermostat (that have only 6 connectors R,W,Y,G,C and OB).One of the transformer's wires...

BernardJ · 03-06-2022

Yes - There is a C terminal at the HVAC but it has no wire attached to it.I will give it, that Nest Connector, a try.Thanks 

BernardJ · 03-05-2022

I thought the the Nest Power Connector simply does what I did - replacing the G for a C.You are saying that it works differently so I will keep the fan control of my system = I can run only the fan to circulate the air and such????

BernardJ · 03-05-2022

An update...After the first transformer (24V 500mA) "got" the error message, during the setup process, that the C wire doesn't "push" anything and after switching the 2 transformer wires from R to C over and over again, with the same result, I ordere...

BernardJ · 03-02-2022

Thanks.

BernardJ · 03-01-2022

Sportfrog.I REALLY appreciate your help - thanks A Lot. I did see that video - it describes 2 wire system, that doesn't use the R on the thermostat.That got me confused.Now, that you confirmed the transformer uses the same R on the thermostat, all is...

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Connecting a 24V Transformer to the Nest Thermostat

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Re: Connecting a 24V Transformer to the Nest Thermostat

Re: Connecting a 24V Transformer to the Nest Thermostat

Re: Connecting a 24V Transformer to the Nest Thermostat

Re: Connecting a 24V Transformer to the Nest Thermostat