Nest lost connection to power?

[Wdonahue]

Nest blinking orange and green. What does this mean? Said that my nest lost connection to power, but nothing else in my house tripped. Can’t get it to restart now 

[David_K]

If it's lost power, you might need to repair your heat link with your thermostat.

Heat Link lights and what they mean - Google Nest Help
How to pair the Nest thermostat and Heat Link - Google Nest Help