Nest thermostats insta

[jm7525]

I have being trying to install this thermostat but I cannot get it to work 

I do have o let two wires on my old thermostat as follows:

Jumped wires RC and RH connected to a red wire and a white wire 

[CoolingWizard]

When you took the picture of the old thermostat backplate and the wire, you had only 2 wires a Red wire on Red and a white wire on ??????  Chances are you have a heating only system and your thermostat is controlling your heating system I’ll be at a gas furnace or a oil burning furnace. The key is the red wire is connected to the white wire when heat is desired. That tells me that you’re white wire is probably connected to the W terminal.

The nest thermostat needs to have power in order to run the thermostat. This requires there to be a common wire attached to the C terminal coming from the HVAC equipment. Do me a favor and tell me what model nest thermostat do you currently have that you’re trying to install?

The AC Cooling Wizard

[Markjosephp]

Hello folks,

Thanks for the input, @CoolingWizard.

@jm7525, how's it going? The Nest Thermostats don't use jumper wires, but if your current thermostat has a jumper wire, do not enter it into the Nest Thermostat. Also, I did find a helpful article to learn more about the common, or C, wire. Please let us know if you have more questions.

I'll look forward to your response.

Regards,
Mark

[Jake]

Hey jm7525,

I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

[Jake]

Hey there,

I wanted to check in with you, and let you know that I will be locking the thread in 24 hours.

Best regards,

Jake