I don't think I was given one in the notices sent to me. I can't attach the emails or screen shot, so here is a copy of the emails I've been receiving, and that I've been responding to.
RE:
Hi,
We've identified an issue with your new Nest Thermostat and its ability to draw power from your heating or cooling system. Unfortunately, the issue cannot be fixed on your device, but we’d like to replace your thermostat for free. It's the least we can do for the inconvenience.
To receive your free replacement, please contact our customer support team at support.google.com/googlenest/gethelp. When speaking with support, please provide the thermostat's 14-character serial number that can be found on the bottom of the device above the QR code.
We apologize again for this inconvenience and look forward to helping you.
- The Google Nest team
