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Mandela64
Community Member
since ‎10-23-2022
‎11-02-2022

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Need help with existing wiring for Nest Upgrade

10-23-2022
Hello,The existing thermostat controls a gas boiler (Rh & W) and attic air handler (4TEE3F31B1000AA)/ compressor (4A7A6024B1000AA). Looking to see if the blue is my common wire and the brown wire I believe should actually be on Y2. Tracing the wires ...