Automatic air conditioning push-button control module, function - GF83.40-P-2000GI
MODEL 163 as of 1.9.01 with CODE (580a) Automatic air conditioning
Function
The AAC push-button control module (N22) makes it possible to make adjustments coming from the driver such as:
- air quantity, by adjusting the blower switch setting (1)
- temperature by setting the temperature selector wheel (2)
- air distribution, by setting the air distribution switch (3)
- defrost function by pressing the defroster button (
)
- recirculated air mode by pressing the recirculated air push-button (
)
- automatic air distribution/blower speed by pressing the Auto
- switching off the cooling by pressing the AC button (
)
- activating the residual engine heat utilization system with the ignition switched off by pressing the REST button (
)
- heating the rear window by pressing the rear window heating button (
)
- switching off the air distribution to the rear compartment by pressing the rear compartment air distribution button (
)
The control module integrated in the AAC push-button control module (N22) looks after all system regulation and control functions such as:
- comparing preselected and actual temperatures and controlling the air temperature at the air outlets
- automatic switchover from fresh air to recirculated air mode
- electrical control of refrigerant compressor
- controlling the auxiliary fan or the electric suction-type fan motor/ air conditioning with integrated control
The AAC push-button control module (N22) has a diagnostic capability. Consequently, any faults which occur are stored in the fault memory which can be read with the help of the diagnosis assistant system (DAS).
When the AAC push-button control module is replaced (N22), variant coding must be carried out using the Diagnosis Assistant System (DAS).
The AAC push-button control module (N22) also performs the following actuations:
- direct: refrigerant compressor; heating water circulation pump; PTC heater booster (OM 612 only), rear window heater
- via the CAN BUS: auxiliary fan, electric suction-type fan motor/air conditioning with integrated control, blower control and air distribution in the rear compartment (automatic mode)
- via the AC bus: blower motor; 8 stepping motors for air distribution
The following sensor signals are read in by the AAC push-button control module (N22):
- direct: temperature sensor evaporator, pressure and temperature sensor refrigerant, in-car temperature sensor, center nozzle vent air temperature sensor, footwell and rear passenger compartment, sun sensor
- via the CAN BUS: Ambient temperature display temperature sensor, sensor for specified values in rear control panel
| Blower switch, location/task/design/function | GF83.25-P-2100GI | ||
| Temperature selector wheel, location/task/ design/function | GF83.25-P-2102GI | ||
| Air distribution switch, location/task/design/ function | GF83.25-P-2101GI | ||
| Defroster button, location/task/function | GF83.40-P-2139GI | ||
| Recirculating air push-button, location/task/ function | GF83.40-P-2145GI | ||
| Auto button, location/task/function | GF83.40-P-2147GI | ||
| AC OFF button, location/task/function | GF83.40-P-2107GI | ||
| Rest push-button, location/task/function | GF83.40-P-2148GI | ||
| Rear passenger compartment air distribution button, location/task/function | GF83.40-P-2173GI |