Controls

CONTROLS

The left knob (1) is used to select the TEMPERATURE REQUIRED (between 18 and 30°C): it is connected to a potentiometer which detects the different angular positions and transmits a signal to the electronic control unit for a total of 15 different positions (one per degree centigrade) of which the two extreme positions are "LO" and "HI" which correspond respectively to the request for the highest amount of cool air and the highest amount of warm air. The centre knob (2) adjusts AIR VENTILATION: this too, is connected to a potentiometer which detects the different angular positions and transmits a signal to the electronic control unit. There are four possible flow rates that can be set manually in a permanent manner (1, 2, 3 and 4), while in the "AUTO" position it is the system itself that automatically selects the most suitable temperature for reaching or keeping the required temperature.

NOTE: Position "0" indicates minimum ventilation: the fan is off and only a light flow of air will go through the vents.

NOTE: There are two different maps inside the control unit which correlate the air flow rate and the fan speed: the presence of the pollen filter on the outside air inlet lowers the flow rate - at the same fan speed - in the "dynamic air" condition compared with "recirculation".

The right knob (3) selects FLOW DISTRIBUTION of air to the passenger compartment which can take place in five different ways:
selection takes place manually through a cable which controls the movement of the distribution ports.

When the button (4) is pressed, it enables operation of the COMPRESSOR (air cooling circuit); when the button is released operation is cut off.

Engagement takes place completely manually: only in the "MAX DEF" mode is the compressor still engaged with the button released.

When button (5) is pressed, it engages the AIR RE-CIRCULATION function from inside the passenger compartment; when the button is released it allows the inlet of "dynamic" air from outside.

Engagement takes place entirely manually: only in the "MAX DEF" mode is recirculation cut off also with the button pressed.

"MAX DEF" function

When the distribution knob is turned completely clockwise - it activates - through a special microswitch - the "MAX DEF" function for quick defrosting which involves:

• maximum air flow rate;
• mixing with the highest amount of heat available
• recirculation off, regardless of the position of button (5);
• compressor enabled, regardless of the position of button (4).