with the setting in ECON it means that the compresser is off, this means that the aircondtioning is not accauly turned on, thu the temp that will be coming in will be warmer as it is having to pass thru a hot engine bay, before coming out in the car, with the compresser switched on , the system will cool the car, as this is cooling the air after its been though the engine bay, also the system will not acctivate the compressor if the external temprature is below 14 deg, i think ,
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