21+ Hvac Fan Relay Wiring Diagram. The furnace fan relay wiring diagram is a critical tool for maintaining a safe and comfortable temperature in your home. Ensure all connections are secure and follow the wiring diagram.

12v switched wire to green wire at. Understand the different components and their functions in the wiring diagram. The fan relay wiring diagram tells you how the fan switch, limit switch, thermostat, and other components are connected.








