Rear Control Switch

CIRCUIT OPERATION
For the rear control switch to operate the rear blower motor the front control switch must be in the ON position. Circuit C50 from the rear control switch connects to the ON terminal of the front control switch. In the ON position, the front control switch connects circuit C50 to ground on circuit Z1.

When the rear control switch is in the LOW position and the front control switch is in the ON position, ground passes through the temperature switch, and both resistors to circuit C60. Circuit C60 connects to the rear control switch. From the rear control switch, ground passes through circuit C50 and the front control switch to circuit Z1.

When the rear control switch is in the MEDIUM position and the front control switch is in the ON position, ground passes through the temperature switch, and one resistors to circuit C65. Circuit C65 connects to the rear control switch. From the rear control switch, ground passes through circuit C50 and the front control switch to circuit Z1.

If the rear control switch is in the HIGH position and the front control switch is in the ON position, the ground path is on circuit C70 through the rear control switch. From the rear control switch, ground passes through circuit C50 and the front control switch to circuit Z1. In the HIGH position, current does not flow through the blower motor resistors.