Heat and fan are fine, but AC not working.
No C wire on thermostat or furnace - DoItYourself.com Community Forums
Nest thermostat not seeing the C wire but it's there... | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK® 8000 Series thermostats THP9045A1098 - Amazon.com
No C Wire on Thermostat but Two C Wires on Furnace - Home - Wyze Forum
What If My Thermostat Doesn't Have a C Wire? | JTech Mechanical
How To Identify A Thermostat Common Wire (C Wire) & What It Does For Smart Thermostats - YouTube
No "C" wire housing on the the wall, any idea where the red and blue wires go? : r/thermostats
Google Nest Power Connector - C-Wire Substitute - Compatible with Nest thermostats GA02493-US - The Home Depot
Emerson Sensi 7-day Programmable Wi-Fi Smart Thermostat, No C-Wire Required for Most Systems ST55 - The Home Depot
Old furnace with no "C" terminal for wifi thermostat - Home Improvement Stack Exchange
How to install Nest Thermostat on an old furnace with no C wire? - The Nomad Studio
nest thermostat C wire not detected : r/Nest
No C wire terminal on new Honeywell Thermostat - What to do? - DoItYourself.com Community Forums
Thermostat C wire connection on Trane - DoItYourself.com Community Forums
What if I don't have a C-Wire? – Smart Thermostat Guide
Honeywell home ventilation system with no c wire for thermostat. How can I substitute the g for the c without blowing a fuse? - Home Improvement Stack Exchange
Smart thermostat with no C-wire? : r/smarthome
Nest Thermostat No C Wire Problem and Solutions - YouTube
No C-wire? Install a Nest thermostat at your own risk – Smart Thermostat Guide
Thermostat C Wire - How to check if you have one
Wiring issue - no control board at Furnace for C-wire adapter - Cameras - Wyze Forum
What's a C-wire, and why should you care? - CNET
Thermostat C-Wire: Everything You Need to Know
What's a C-wire, and why should you care? - CNET
