Auxiliary Medium Blower Speed

When the Med blower speed is selected by the front auxiliary HVAC control assembly, the blower motor switch provides a path to ground for the med speed blower motor relay coil using the auxiliary blower motor medium speed control circuits, ground circuits, the rear auxiliary HVAC control assembly, and the splice pack. When the coil is grounded, the switch inside the relay is pulled over and power is delivered to the auxiliary blower motor resistor. Voltage is dropped across a portion of the resistor to achieve the proper blower speed. The auxiliary blower motor is grounded through the ground circuit and a splice pack.

Utility vehicles with the sunroof option will only have the front HVAC control assembly. When the Med blower speed is selected, the blower motor switch provides a path to ground for the med speed blower motor relay coil using the auxiliary blower motor medium speed control circuit and the ground circuit. When the coil is grounded, the switch inside the relay is pulled over and power is delivered to the auxiliary blower resistor. Voltage is dropped across a portion of the resistor to achieve the proper blower speed. The auxiliary blower motor is grounded through the ground circuit.

When the Med blower speed is selected by the rear auxiliary HVAC control assembly, the front auxiliary HVAC control assembly must be placed in the REAR CNTL position, allowing a path to ground. Ground is provided for the med speed blower motor relay coil using the auxiliary blower motor low speed control circuit, auxiliary blower motor control circuit, auxiliary HVAC control processor, auxiliary HVAC switch supply voltage circuit, front and rear HVAC control assemblies, ground circuits, and a splice pack. When the coil is grounded, the switch inside the relay is pulled over and power is delivered to the auxiliary blower motor resistor. Voltage is dropped across the entire resistor to achieve the proper blower speed. The auxiliary blower motor is grounded through the ground circuit and a splice pack.