die Bedienungsanleitung (User Manual E4) beschreibt jedenfalls ein normales System, Klima einschalten, Gebläse mindestens auf Stufe 1 und Temperatur mit dem Heizungsregler regulieren
Zitat
Heating and ventilation system
The temperature set to the temperature controller (D) is measured by a sensor, which automatically
adjusts the heating valve. The temperature is automatically adjusted when the fan selector switch (B)
is set at least to Position 1.
Close the directional air outlets to increase the air flow in windshield direction, this favors the demisting
effect.
Air conditioner (optional)
To start the air conditioner set the fan switch (B) at least to Position 1.
Switch the on/off selector (C) to 1 and set the required temperature using the temperature controller (D).
The max. cooling power is obtained when the temperature controller is entirely in the blue sector.
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Gruß Juergen