Nest Thermostat causing reversing valve to chatter.

[ericmshaw]

I’m on my second Nest thermostat - first one failed, and this one seems to have failed also. When the thermostat calls for cooling the reversing valve begins to chatter. I was able to troubleshoot it to the Nest output.  Is there a fix for this issue?

[Patrick_Caezza]

How did you narrow it down to the Nest?

[ericmshaw]

It was pretty easy - I replaced it, and the problem stopped.