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"Starting Soon", cooling 16 minutes an hour only?

BHG525
Community Member

‎02-23-2024 01:48 PM

Hi! I recently changed out a thermostat in an apartment (the old thermostat worked fine, and the system worked fine/cooled perfectly). The new thermostat seems to work, but in a very limited way. It will not cool below 72 or 73 degrees it seems. It's stuck in a "cooling starting soon" countdown, and then when it hits zero, it starts again. The temperature seems to always be around 73 degrees, and the energy consumption shows that it cools for 16 or 17 minutes every hour...it's very bizarre!

 

The wiring is thick enough gauge, connected tightly, and the thermostat batteries have been changed to confirm there is enough power.  I've tried deleting the thermostat and readding it...still no luck. Any ideas?

 

 

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3 REPLIES 3

BHG525
Community Member

‎02-23-2024 01:49 PM

It seems like the fan is not kicking on either, even if I set it to turn on manually. I know the wiring is fine and the fuses are fine because I tried to old thermostat again and it worked fine. When I reconnected the nest, the same problem persisted.

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BHG525
Community Member
In response to BHG525

‎02-23-2024 01:56 PM

Sorry for the repeat messages- the math of 16-17 minutes an hour makes sense, the system is trying to kick on after each "starting soon" message. The really odd thing in the thermostat isn't kicking on the fan, and I know the wire is fine. Is it possibly just a bad thermostat?

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Markjosephp
Community Specialist
Community Specialist
In response to BHG525

‎02-28-2024 09:57 AM

Hello BHG525,

 

Thanks for reaching out. It sounds like you've already performed some troubleshooting steps, but there are a few more things you can check and try to narrow down the issue:

 

  • Ensure that your Nest Thermostat is compatible with your HVAC system. Tell us the make and model of it so we can also check it for you.
  • Even if the wiring seems fine, double-check that it is connected to the correct terminals on the Nest Thermostat. Ensure that the wires are securely attached and in the correct positions. Share with us a photo of your old thermostat and Nest Thermostat's wiring setup.
  • The Nest Thermostat typically requires a C-wire for continuous power. Make sure your system has a C-wire and is properly connected to the thermostat. Some HVAC systems may not have a C-wire, and there are alternative solutions if needed.
  • Check the settings on the Nest Thermostat to ensure it is configured correctly for your HVAC system. Verify that the cooling setpoints and other settings are appropriate.
  • Try performing a factory reset on the Nest thermostat and then reconfiguring it. This can sometimes resolve software-related issues.

 

It's also worth noting that the Nest thermostat may take some time to adapt and optimize its settings based on your usage patterns. However, if the issue persists after trying these steps, it's possible that there could be power-related issues with your system.

Let us know how it goes.

Best regards,
Mark

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