My nest has been working fine for 5+ years. AC still works fine. Out of
the blue I received the E194 message but AC still working. Nest is not.
Please advise on how to trouble shoot or next steps
I have not changed the filter recently but I did 2 months ago. I just
pulled it out and reinserted it. I do have a C Wire Connected and when I
went to the Equipment screen it showed 'Equipment sensed on W1-Y1-G-C
and Wires inserted W1-Y1-C-G. under N...
