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Blue "C" wire is connected to "Y" on old thermostat. New thermostat has separate "C" hookup. Where does the blue wire go - "Y" or "C"? : r/Nest
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Thermostat Wire Color Codes You Need to Know | AireServ
Installed new honeywell thermostat. AC won't stop. | DIY Home Improvement Forum
4 Wire Thermostat Wiring Color Code — OneHourSmartHome.com
Nest thermostat not showing cool. Only heat. I unfortunately did not take a pic of the old thermostat. I do have central air but I'm supposed to have a yellow wire but
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Nest installation - Missing Yellow (Y) wire on thermostat : r/Nest
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Why is the white wire not connected, and the yellow wire is joined to the white connection on my thermostat? : r/hvacadvice
Basic Thermostat Wiring - How to Wire HVAC Thermostat - YouTube
