Hi Backyard,
Thanks for posting here in the Google Nest Community. Let’s check this out. Please answer the following:
- Are you from North America or Europe?
- Gather Nest Thermostat power readings in Settings > Technical Info. (VOC, VIN, LIN, and Battery Level.)
- Send us a photo of the Nest thermostat wiring and control board wiring.
- Have you checked the HVAC unit door if it’s properly closed?
- Is there a wire connected to the C terminal of the Nest thermostat base?
- Do you have a multimeter?
- Any error code or error message showing on the Nest Thermostat display?
I look forward to your response.
Best,
Renz