Thank you for contacting us, RayC77.
We apologize for any delay you may have experienced.
We understand you're encountering an issue with your Nest Thermostat potentially not detecting the AC wire. To assist further, we recommend the following steps:
- Review your Nest Thermostat's wiring diagram. This diagram will detail the correct placement for each wire connected to the thermostat.
- Verify the AC wire's connection. Ensure the AC wire is securely attached to the designated terminal, typically labeled "Y" or "Y1" on your Nest Thermostat.
Safety First: Always remember to turn off the power at the breaker box before making any adjustments to your thermostat's wiring.
If these steps don't resolve the issue, please don't hesitate to provide additional details about your specific situation. We're committed to helping you achieve a successful connection.
Best regards,
Douglas.
