Nest Thermostat problem its lit but when i try to heat home blowing cold air

[lauracosmetics]

Thermostat and heatinmg system worked 3 weeks ago . 

this last 2 week its lit but my system blowing out cold air 

Help!!!

[CoolingWizard]

What type of cooling and heating system do you have? 

[MelbaDT]

Hey folks, 

Thanks for helping, CoolingWizard. 

lauracosmetics, I'm chiming in to ensure that everything is good here. If you still need help, please provide the answer to the question posted above. Also, include a photo of your original thermostat's wires and how your Nest thermostat now is wired. 

Best, 

Melba

[MelbaDT]

Hey lauracosmetics,

How's it going with your thermostat now? Still need our help with it?

Best, 

Melba

[MelbaDT]

Hi, 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.

Best, 

Melba

[CoolingWizard]

The reason I was asking about your heating system, is if in fact your thermostat was working a few weeks ago, that is, cooling was cooling and heating was heating, and now it suddenly quit heating, that’s a sign that there’s a problem with your HVAC system.