URGENT - Your Nest Thermostat is not getting consistent power

[Jmt0113]

I received this email a couple of days ago.

We noticed that your Nest Thermostat isn’t receiving sufficient power, which will cause the thermostat’s batteries to drain rapidly. If this continues, your thermostat will work but may experience the following issues:

• Reduced battery life, that may require replacements every few weeks
• Disconnection from Wi-Fi
• Disabled motion sensor
• Unexpected activation of heating and cooling

This can be fixed by installing a Google Nest Power Connector or properly installing a common wire (also known as a C-wire).

I have 3 Nest Thermostats.  How do I tell which one this is referring to?

Thank you!

[Patrick_Caezza]

@Jmt0113 

You should be seeing a message on the problem thermostat with an error code.

Do you have a C wire installed on any of them?