Hi @AIvonne,
Thanks so much for reaching out to the community. I'm sorry to hear that your thermostat isn't working and it's so warm in your house. I can understand how frustrating that must be, especially since it was working just fine yesterday. I'd be happy to help you figure out what's going on.
To provide the most accurate information, could you please answer the following questions?
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What type of Nest Thermostat do you have?
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When did you install the Nest Thermostat?
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When did the issue start?
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What type of HVAC system do you have?
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Do you see error codes on the screen of the thermostat?
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When was the last maintenance service and cleaning?
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Have you set up a temperature schedule for your thermostat?
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Have you done some troubleshooting steps? If so, can you list them?
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Could you please send me a picture of the thermostat wiring?
I look forward to your response so we can find a solution for you soon.
Regards,
Gabriela
