Error message E194

[Nathalie]

Out of the blue A/C stopped working. It gives error message E194 how can I fix this? 

[EdwardT]

Hi Nathalie,

Thanks for reaching out. The message that you're getting means that your Nest Thermostat is not detecting any power from the Y wire. If you haven't yet, please follow the steps on this link to isolate the issue.

Thanks,

Edward

[EdwardT]

Hi Nathalie,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[MelbaDT]

Hi, 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the Community.

Best, 

Melba