Blue wire not working right

[Goofygang3]

When we hooked up the blue wire the nest lost power. Hooked up without and it says low power. Any ideas?

[AndersC]

Hi @Goofygang3,

Thank you for posting in the community. I'm sorry to hear your Nest thermostat is not getting power when connecting the blue wire. I appreciate you sharing your experience of hooking it up without the wire and then getting a low power message. I'm happy to help.

In order to determine the reason for this, please provide the information requested below:

• What is the model of your Nest thermostat?
• What type of heating, ventilation, and air conditioning (HVAC) system do you have?
• Is there a wiring report or error message on your thermostat, Nest app, and/or Google Home app when the blue wire is connected?
  • If so, what exactly does the error message say?
• Please provide a photo of the wiring connected to the base of your Nest thermostat.

Please keep me posted, I'll be waiting for your response.

Regards,

Anders

[Patrick_Caezza]

@Goofygang3 

Post a picture of the original thermostat's wiring here?

If the camera icon isn't present yet, you can use the imgur.com upload site and post the link it provides here.