nest thermostat dosn't come on

[Rich-1027]

I have connected the nest thermostat but it does't come on only has a green light 

[Kyjoh]

Are you a 4th generation? I have the same situation.

[Patrick_Caezza]

@Rich-1027 

Where are you located?

Can you post a picture of your original thermostat's wiring?

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