Nest only controlled with Alexa, not physically

[Geradu]

I have a nest thermostat (not learning).  When I change the temperature on the actual  device it does not kick on the a/c. Instead the screen goes blank and on tapping the screen, the old setting presents (nothing happened). 
Using Alexa, the thermostat works and activates no problem. 
how do I fix it?

[aatienza]

Hey Geradu,

I’m sorry to hear you’re having trouble with this. No worries, we'll check this out. When did it start happening? Could you check if all the wires are properly seated? Do you see a blinking LED light? If so, is it red or green? What are the power readings in Settings > Technical Info > Power? Also, what country are you located in?

Thanks,

Archie

[janthadeus]

Hi folks,

Checking in — have you tried the suggested steps provided by Archie? If so, how did it go? Let us know if you need more help.

I appreciate your help, Archie.

Thanks,

JT

[janthadeus]

Hi there,

Just checking in to make sure that you've seen our responses. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.

Best,

JT