Blower function - GF83.10-P-2102-02PC

WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2007 Mercedes-Benz C350, 2007 Mercedes-Benz C280, 2007 Mercedes-Benz C230, 2006 Mercedes-Benz C55, and 2006 Mercedes-Benz C350. However, it is still accessible from the selected car via links, so may be relevant.

Operation

The comfort AAC control and operating module C-AAC (N22/7) sends a control voltage of 0 - 100 % over the AC bus to the blower regulator (A32n1). This regulates the operating voltage for the blower motor (A32m1) depending on the control voltage applied from 0 to 100 %.

This facilitates control of the blower motor speed from 0 - 100 %. The blower motor regulator (operating voltage) is influenced by the following factors:

blower motor output setting (AUTO/manual)
Control functions (EC or AC OFF, REST (residual engine heat utilization), air distribution duct)
Mode status (heating, cooling)
Intensity of sun
Coolant temperature
Vehicle speed
Fresh air/recirculation flap setting
Position of activated carbon filter flap
Flap positions
Circuit 15 (blower motor (A32m1) ON), starter running (blower motor (A32m1) OFF)

The blower motor output can be increased in relation to outside temperature.

In order to ensure that the windows are not fogged up when outside temperatures are low and the passenger compartment temperature level doesn't drop, the blower motor output is increased at outside temperatures of -10 °C to -15 °C by a maximum of 15 %.