Hi @Steventipton!
Thanks for reaching out to the community. I am sorry that your thermostat keeps switching off overnight, but no need to worry; help is here. I need to know a few things about your thermostat in order to provide you with a better resolution.
- What Nest thermostat model do you have? For your reference, you can check out this article on how to tell which Nest thermostat you have.
- Does the thermostat display show any error codes or messages?
- When did the issue first occur?
- When was the thermostat installed?
- Previous troubleshooting steps?
I'll be waiting for your response; any additional details you can provide will be helpful.
Best regards,
Jeremy.
