Auxiliary High Blower Speed

When the High blower speed is selected, the auxiliary blower motor switch applies a ground for the auxiliary blower motor. Voltage is routed from the auxiliary blower motor, through the high blower motor control circuit, to achieve the desired auxiliary blower speed. The circuit is grounded by the high blower motor control circuit, auxiliary blower motor switch and ground circuit. The HVAC control processor monitors the high blower speed on the high blower motor control circuit.