Center vent electronics control module task - GF83.40-P-2142-02I
Task
The position of the 3 selectors and the automatic detent position at the center outlet are read in by the center outlet electronics control module and conveyed to the AAC pushbutton control module via the air conditioning bus. The quantity of air and air temperature from the center outlet are controlled and regulated based on this data.
In automatic mode the function of the center outlet is designed so that the interior temperature desired by the operator is reached as quickly as possible and maintained. This control takes place under comfortable conditions for the occupants.
Blend flaps OPEN = Air downstream of heat exchanger to center outlet
Diverter flaps OPEN = Air direct from evaporator to center outlet
| Operating condition of center outlet in automatic mode (temperature adjuster engaged in position "A"), if interior temperature too high → Cooling mode | Heat exchanger temperature | Air from center outlet | Comment |
|---|---|---|---|
| Heating | > 40 °C | No air | |
| ↓ | 40 °C ↓ |
Blended air | Small volume of air |
| Mode change | 31°C | Cooler air | Volume of air increases |
| (transition from heating to cooling) | 29°C | ↓ | ↓ |
| 26°C | Cooler air | ↓ | |
| ↓ | ↓ | ||
| Cooling | <8 °C | Cold air | Large volume of air, diverter flaps may open |