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zoro07
Community Member
since ‎10-30-2024
‎11-11-2024

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Nest thermostat gen 3 error E77

10-30-2024
Hi all, I am trying to setup my nest thermostat 3rd gen and getting an error E77 that wire Y1 is not connected.I do not have any Y wire connected to my old thermostat. Could some one please help me understand the right setup of my nest thermostat.