GF83.10-P-2000MCU Ventilation system, function

GF83.10-P-2000MCU Ventilation System, Function







N23 Heater/AC operating unit

The ventilation system prevents the windows from misting up and ensures that there is a uniform, pleasant temperature in the vehicle interior.

Function requirements:
^ Circuit 15 On

The ventilation allows the following operating modes:
^ Fresh air mode
^ Air recirculation mode (with code (I01) Air conditioning Plus)

The following components are actuated by the heater/AC operating unit:
^ Blend air flap actuator (M16/8) (with code (I01) Air conditioning Plus)
^ Air recirculation flap actuator motor (M39) (with code (I01) Air conditioning Plus)

Fresh air mode
The fresh air is drawn in through the air inlet in the front maintenance flap and passed on into the heater or air conditioner housing (with code (I01) Air conditioning Plus) via the pollen filter. Depending on the preselection via the air distribution rotary switch, the fresh air is passed on via the blend air flap into the vehicle interior through the air ducts and air outlets (arrows). On vehicles with code (I01) Air conditioning Plus, the blend air flap is actuated via the blend air flap actuator, which is actuated by the heater/AC operating unit depending on the following information:
^ Specified temperature set on the temperature preselection slider switch
^ Interior temperature
^ Temperature on evaporator
^ Coolant temperature

On vehicles without code (I01) Air conditioning Plus, the blend air flap is adjusted mechanically by the temperature preselection slider switch in the heater/AC operating unit by means of a cable. Depending on the actuation of the blend air flap, it opens or closes the air passage through the heater heat exchanger. The blower switch (S98/1) integrated in the heater/air conditioning control unit can be used to regulate the air flow over the blower motor (M2).

Air recirculation mode (with code (I01) Air conditioning Plus)
By actuating the air recirculation switch (N23s3) on the heater/AC operating unit, the air recirculation flap actuator motor is actuated, which closes the air recirculation flap. As a result, supply of outside air is prevented; the air only circulates in the vehicle interior and unpleasant odors and harmful gases are kept out. The visual feedback of air recirculation mode takes place via the light-emitting diode integrated in the air recirculation switch.