SLK 350 (171.456) V6-3.5L (272.963) (2006)
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Control Module HVAC: Description and Operation
GF83.40-P-2181-01SK Control and Operating Unit Comfort Automatic Air Conditioning, Task
GF83.40-P-2181-01SK Control And Operating Unit Comfort Automatic Air Conditioning, Task
- with CODE (581) Comfort automatic air conditioning
Component Identification
Task
The comfort AAC control and operating module (N22/7) actuates all air conditioning functions for the vehicle interior.
The comfort AAC control and operating unit (N22/7) in the center console provides the following controls:
^
Separate warm/cold interior temperature selection for left and right
^
Switching the air conditioning system on and off
^
Manual blower control
^
Manual air distribution
^
Automatic blower control and air distribution
^
Air recirculation mode
^
Activation of residual engine heat utilization with ignition switched off
^
Windshield defrost function
^
Rear window heater
The comfort AAC control and operating module (N22/7) performs the following actuations:
^
Directly: the duovalve
^
Via the AC bus: the blower regulator, the fresh air and recirculated air flap actuator motor, the left and right footwell flaps actuator motor, the left
and right defroster flaps actuator motor and the fresh air flaps actuator motor
The following sensor signals are received by the convenience AAC pushbutton control unit (N22/7):
^
Direct: the left heat exchanger temperature sensor, the right heat exchanger temperature sensor, the evaporator temperature sensor, the in-car
temperature sensor (N22/7b1) and the sun sensor
^
Via the AC bus: the C-AAC multifunction sensor
Illustration of individual operating facilities
Blower regulation switch (1) and automatic regulation switch (2)
The blower capacity and air distribution can be manually or automatically adjusted using the blower regulator switch (1) and the automatic regulation
switch (2):
^
Manually by rotating the blower control switch (1) around the automatic control switch (2). The setting is displayed via the respective LED ring
^
Automatically by pressing the automatic control switch (2). The setting is indicated by the function LED.
Defrost button (3)
The temperature is set to "maximum" and the air flow is distributed to defroster and lateral nozzles. All the other flaps are closed. The blower voltage is
controlled depending on the coolant temperature.
Left (4) and right (7) temperature rockers
The target temperature for the driver and front passenger sides can be separately adjusted using the left (4) and right (7) temperature rockers. The
