is it possible to get airflow in a166 with the climate comtrol off? also does compressor only come on when econ is selected. i can hear my copressor engaging on startup even when temp select is 22 deg in auto mode and outside temp is 10 deg:
OK - I will assume that the 'climatisation' works in the same way for the 166 as for the 164 - I don't think there are any differences.
- Auto mode always runs the compressor/air-con, even if the desired temperature is greater than external temp. The heating will be regulated automatically to obtain desired temp - fan will only run at higher speeds once the heater (and engine) has warmed up. This aircon-and-heating provides a dehumidifying capability (demists windows faster in winter). The only exception is when outside air temp. drops to around 5-degrees C. The air-con will then cycle as necessary to prevent the evaporator from freezing-up.
- Econ mode cuts off the compressor/air-con. This also switches the automatic temperature regulation to operate on a different 'map' (curve), since the air will not be cooled by the air-con before being heated. I suggest choosing 'Econ' a few minutes before arriving home, so that evaporator has chance to dry before car is parked. You may find that windows become steamed-up with this evaporator moisture - either during the drive after 'Econ' being pressed, or after being parked.
- Econ mode precludes the automatic use of recirculation (the system sometimes does this to attain set temperature faster). You can select recirculation manually (to take in air from inside the car rather than outside), but you will find that the windows steam up rapidly!
- OFF closes the recirculation flap and turns the fan off. This means that you get NO airflow, AND no fresh air, so the windows will steam up - sometimes quite suddenly - possibly dangerous if driving on a motorway at the time.
Turning the ignition off will turn the climatisation off - so when parked-up, the windows steam up AGAIN - I'm sure there's room for a joke there somewhere, so I'll leave it to your imagination - yes, my 164 windows are often steamed-up, but no, I'm the only one in the car...