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Nest Gen 4 will not work, but Gen 2 does

Subject: Nest Gen 4 Setup Issue – RH/RC Voltage Error (E402)Hello,I’ve been troubleshooting an issue with my Nest thermostat but haven’t found a solution. My Nest Gen 2 worked flawlessly for years, but since the app was discontinued I had to upgrade ...

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ehs1331 by Community Member
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Resolved! How to Restore Your Nest Devices After Deleting the App

It’s okay — this happens more often than you think. Try reinstalling the Nest app and logging back into the same Google/Nest account that was originally linked to your devices. Your Nest Guard and other devices should automatically reappear once the ...

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