Nest Randomly Blows Cold Air During Heat Cycle

[mfutterman]

So I bought a home in Jan 2023 and installed Nest in Feb 2023 - Things seemed okay in Summer, however when Winter came I noticed that when running the heat, once every other week it would all the sudden blow cold air during the heat cycle - it would display that it is still 'heating' with the orange screen, but cold air would come out (and would run nonstop). 

I called a HVAC repair and they cleaned my pilot light sensor - but the issue is continuing. When I open up my heating/AC unit and then close it (I guess restarting it) the issue seems to be fixed for a few days and the heat will come on again, but trying to figure out why this keeps happening. Is it the nest? the wiring? the furnace?

I have gas 'air handler' from Weather King - and attaching the wires for my original and how the nest looks now

Any help is greatly appreciated!

[Jake]

Hey there,

I wanted to follow up and see if I could be of any help. I found an article with some troubleshooting steps. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,
Jake

[mfutterman]

Hello yes  - i tried all those steps and it still seems every 2 week or so I need to reset things and then the heat will come normal again for a few days

[Lorispoon]

I am having same problem and have tried everything my house is freezing at 57 blowing cold air. Set it higher and no response. Everything is connected properly. I looked all the troubleshooting in threads still not working