Nest thermostat randomly changing temperature

[Hjengelson]

Our thermostat will randomly turn the heat up to 71°F. We do use a schedule but 71° isn't on there at all. It's 69° when we're home, and 65° during the day (while we're at work) and at night. Also nowhere in the log does it show a temperature change. It shows when it changes for the schedule but nothing else. It's been doing this only for the last couple of months. We've had this thermostat for almost 3 years. We live in Minnesota so this is costing us big time during the winter if we aren't paying attention to the temps. Does anyone have a good solution?! I haven't found one so far.

[Jeremyg]

Hi @Hjengelson,

Thanks for reaching out to the community. I am sorry to hear that your Nest thermostat is changing the temperature randomly, but no need to worry; I will be happy to help you.

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?
• Have you done any troubleshooting steps before contacting us? 
• When did the issue first occur?
• "What is the make and model of your HVAC equipment?
• Do you see a blinking LED light? If so, is it red or green?

I'll be waiting for your response; any additional details you can provide will be helpful.

Best regards,

Jeremy.

[Hjengelson]

• We have the classic Next Thermostat.
• There are no error messages.
• We have reset everything and remade the schedule.
• I don't know a specific date, but it just started happening this winter. We turned on the heat for the first time the end of October.
• I don't know the make and model of our furnace off hand.
• I assume you're referring to a blinking light on the furnace, and I don't think so, but I don't know off hand.

[Jeremyg]

Hi @Hjengelson!

Thanks for the update and letting us know that information that is going to help me to better assist you.

Here are some general tips to exhaust all the possible issues:

• Open the Nest app.
• Tap Settings 
• Home/Away Assist 
• Home or Away 
• Select the thermostat.
• Switch off automatic switching.

Let me know how it goes and keep me posted.

Best regards,
Jeremy.