Nest thermostat

[Bodean5]

Our heat won’t come on~ been freezing all night… it’s an error message saying E298

[Nuyurk]

Mine too. My thermostat shows it on @ 74 degrees but it’s not on. It’s freezing in my house. What is causing this to happen?

[David_K · Accepted solution]

Google has good guidance on how to troubleshoot this:
Troubleshoot a "No power" alert on a Nest thermostat (E298, E448 or M20 help code) - Google Nest Hel...