Ventilation Fan

Fan Impeller And Fan Motor
The fan impeller is of radial type with a guide collar on its outer edge. The fan impeller is balanced with steel clips. The fan motor is a DC motor, whose speed can be regulated by changing the voltage across it.

When the speed of the fan is manually adjusted, this is noted on the ACC control module display by the LED for "fan up" or "fan down" lighting.

When the "fan up" or "fan down" buttons are pressed, fan speed changes by 2 A/s. If the button is held depressed, fan speed changes by 3 A/s. Max. fan current is approx. 20 A.

In the AUTO mode, fan speed is automatically controlled. In this case, the LED between the two used for manual control lights. In AUTO mode, fan speed changes by 1 A/s.

If fan speed is manually controlled, AUTO mode is disengaged. Other features remain unchanged.

If "HI" or "LO" cabin temperature has been selected, the fan will run at maximum speed, but can also be manually adjusted.