2003 ASTON MARTIN DB AR1 Q Owners Guide

C - Driving
1-C-24

D - Heating, Ventilation & Air Conditioning
1-D-1
Contents
The Air Conditioning System .............................................................. 1-D-2
Air Conditioning Controls .................................................................. 1-D-5

D - Heating, Ventilation & Air Conditioning
1-D-2
The Air Conditioning System
Note: Air conditioning performance will be degraded due to the general nature
of this vehicle.
The air conditioning system is used to maintain a selected temperature level
within the passenger compartment. The system has heating, ventilation and
air conditioning functions. The system offers other functions such as
humidity control, rapid demisting and defrosting of the windscreen and
recirculation of internal air to avoid drawing unpleasant fumes into the
vehicle.
Heating/Cooling
Incoming air may be heated or cooled to a chosen temperature and then
distributed within the passenger compartment through a number of fixed
and adjustable vents. Once set, the chosen conditions will be maintained by
the computer controlled air-conditioning system.

D - Heating, Ventilation & Air Conditioning
1-D-3
Ventilation
The air from the air-conditioning system is fed into the passenger compartment
through a distribution system with several outlets. The diagram below
illustrates the principal outlet positions.
Face Level Vents
The face level vents are controllable and can be adjusted, horizontally or
vertically. Air supply to these vents is closed off in heating and defrost modes.
To direct the air from any of the face
level vents, rotate the central thumb
wheel left/right or up/down.

D - Heating, Ventilation & Air Conditioning
1-D-4
Door Mounted Vents
The door vents are also controllable and can be set to suit the occupants
requirements.
A lever at the top of each door vent controls the distribution and volume of
air.
In the mid position, unrestricted airflow is available from the door vent and
the side window vent.
Moving the lever towards the window symbol progressively closes off the
door vent and biases airflow to the side window vent.
Moving the lever towards the
•symbol progressively closes off the airflow
to both side window and door vents. This lever position may be used during
demist operations to ensure maximum airflow to the windscreen.

D - Heating, Ventilation & Air Conditioning
1-D-5
Air Conditioning Controls
The air conditioning controls are located on two panels mounted either side
of the clock on the centre console.
Left Panel
The left panel contains the temperature and fan speed controls.
Temperature Control
This control sets the desired in-car temperature for the
system. Incoming air is cooled and then heated or
blended as required to maintain the in-car temperature
at the set level within the operating range of the system.
Fan Speed Control
This five position switch is used to set the fan speed: Off
(Fan symbol), 1-Low, 2-Medium, 3-High and Defrost.
In Defrost mode the fans run at high speed and supply
air to the windscreen and side screen vents only.
When the system is switched Off, (Fan symbol) the
complete system is OFF. The external air inlets are
closed, cutting off fresh air supply from outside the car.

D - Heating, Ventilation & Air Conditioning
1-D-6Defrost (A/C Off)
In defrost mode, the system is automatically switched
to high fan speed and maximum heat with no air
conditioning. The hot air is directed to the screen and
door vents only. The door vents may be closed to
direct maximum air flow to the screen.
Right Panel (A/C Mode Switch)
The right panel contains the mode switch and temperature differential
controls.
The mode switch settings are:
Economy (A/C off)
Manual Control
Auto Control
Demist
Recirculation
ECON (Economy)
In the ECON position, the air conditioning compressor is switched off.
Incoming air can be heated if required and the fan speed can be adjusted
to increase or decrease the airflow in the vehicle. This mode puts minimum
load on the engine and gives the best fuel economy with no air conditioning
(no cooling or dehumidifying of incoming air).

D - Heating, Ventilation & Air Conditioning
1-D-7 MAN (Manual)
In Manual mode, the air delivered from the vents
remains at the temperature set on the temperature
control regardless of the temperature inside the
passenger compartment. In this mode, incoming
air is also dehumidified and blended.
AUTO Control
This is the automatic mode of operation in which
the heating and cooling functions of the system
operate automatically, as required, to maintain
the selected in-car temperature. In this mode,
incoming air is also dehumidified and blended.
Note: If the incoming air requires little heating or cooling when in AC mode, the
centre vent will close reducing the air flow in the upper part of the passenger
compartment. If more airflow is required, the Demist function can be used to
provide the same temperature level but with increased air flow to the windscreen
vents.