R55 Air Vents - how does one set them so they bring in outside air?
#1
#3
Yes the default is to allow outside air in the front vents but it does go thru the heating/cooling system. Unlike some other cars that will allow fresh un-conditioned air thru by bypassing the heater/cooling cores.
If you need to set it to recirculate then there is a button for that on the heating/AC controls.
If you need to set it to recirculate then there is a button for that on the heating/AC controls.
#6
I have the Climate Control system and I seem to have a third option: Auto Recirculate (the recirculate arrow with a little A by it). What does that mean?
Second Question: When the system is set to recirculate, does the interior air go through, or bypass, the system air filter? Just Curious.....
Second Question: When the system is set to recirculate, does the interior air go through, or bypass, the system air filter? Just Curious.....
#7
I have the Climate Control system and I seem to have a third option: Auto Recirculate (the recirculate arrow with a little A by it). What does that mean?
Second Question: When the system is set to recirculate, does the interior air go through, or bypass, the system air filter? Just Curious.....
Second Question: When the system is set to recirculate, does the interior air go through, or bypass, the system air filter? Just Curious.....
Last edited by Shoof; 10-18-2009 at 04:13 PM.
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#8
#10
Does anyone know how the auto recirc actually works? I read the manual (not much help), and pressed buttons on the HVAC control panel until it went into the mode, and I still have no idea what it might be using as a control point. In "green" buildings they use CO2 sensors. That doesn't seem likely in a car. I'm confused.
#11
This is straight out of the MINI Wiring Diagrams and Maintenance Manual.
Open Quote:
WDS Wiring Diagram SystemThe AUC function is activated via the recirculated-air button. The operating mode is shown in the display. Pressing the recirculated-air button once activates the automatic recirculated-air control mode. Pressing the recirculated-air button again activates the recirculated air mode.
Sensor for automatic recirculated air control
The AUC sensor is fitted on the micro-filter compartment. The AUC sensor detects the following pollutant emissions:
-
- Hydrocarbons (CH)
- Carbon monoxide (CO)
- Nitrogen oxides (nitrogen monoxide NO, nitrogen dioxide NO2)
Microfilter
A microfilter with activated carbon is built into the IHKA. The activated carbon filter makes an additional contribution to cleaning the fresh air that enters of gaseous pollutant emissions. The state of the microfilter is not picked up.
System functions
Recirculated-air mode
In the recirculated air mode, in the event of a high pollutant load, e.g. in a traffic jam, the supply of fresh air can be blocked. The air in the vehicle interior is permanently recirculated. With recirculated air mode, the oxygen in the vehicle interior is used up. Furthermore, in the recirculated air mode the relative humidity in the vehicle interior can increase, which can lead to fogging over.
To ensure adequate fresh-air supply, the recirculated air mode has a time limit (30 min recirculated air mode -> 30 s partial fresh-air mode -> 30 min recirculated air mode -> etc.).
The recirculated air mode is activated as follows:
- the recirculated-air button on the operating unit is pressed
- AUC detects an ambient condition
AUC mode
In the recirculated-air control (AUC) mode, automatic switches are made between fresh air and recirculated air mode depending on the quality of the ambient air.
If the AUC sensor measures a rise in the pollutant emissions in the environment, the IHKA control module automatically activates the recirculated air mode. To ensure adequate fresh-air supply, the recirculated air mode has a time limit:
- at outside temperatures below 0 °C:
2 min recirculated air mode -> 1 min fresh-air mode -> 2 min recirculated air mode - > etc. - at outside temperatures of 0 °C to 6 °C:
3 min recirculated air mode -> 1 min fresh-air mode -> 3 min recirculated air mode - > etc. - during operation without air-conditioning function at outside temperatures above 6 °C:
4 min recirculated air mode -> 1 min fresh-air mode -> 4 min recirculated air mode - > etc. - during operation with air-conditioning function at outside temperatures above 6 °C:
12 min recirculated air mode -> 1 min fresh-air mode -> 12 min recirculated air mode - > etc.
End Quote:
#14
Our Audi works the same way, it's supposed to switch to recirculate if you get behind a diesel truck for example, I've never seen it do it on it's own tho....
to the OP, set the rotary **** to the dash vent position (about 9 o'clock) and kick the fan up a notch or two, but I've found the best way to get fresh air into the car is to open the windows!
to the OP, set the rotary **** to the dash vent position (about 9 o'clock) and kick the fan up a notch or two, but I've found the best way to get fresh air into the car is to open the windows!
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