💡 If your thermostat has only one "FAN" output (on/off), you cannot use this controller directly. You need a separate speed selector switch or a different controller.
: He matched the thick Yellow, Green, and Blue wires from the controller to the motor. These would deliver the raw power to spin the wheel. yyk controller wiring diagram
For any YYK controller setup, the following four connection groups are the most critical: Main Power 💡 If your thermostat has only one "FAN"