2889443 - E6020 AIR CONDITIONING - Description (Automatic Air Conditioning)
Description
An automatic system manages the climate
control of the passenger compartment, i.e. temperature and ventilation
with recirculation and air flow orientation.A dedicated control unit manages
system operation by controlling:
- air temperature at outlets;
- fan speed;
- activation of the compressor (air refrigeration circuit);
- activation of air recirculation;
- "rapid demisting" function;
The control unit sets the above parameters
in order to adjust passenger compartment temperature to the required
level.The climate control is operated by
acting on the three knobs in the dashboard:
- the left knob controls the mixing of the hot and cold
air;
- the right knob, mechanically operated via a cable, controls
the opening of the flaps which regulate the distribution of air
flows;
- the centre knob adjusts the air ventilation.
The air recirculation button and the button
for switching on the air conditioning compressor are located in
the lower part of the control panel.The control unit supplies information on
interior and exterior temperature via special sensors.After processing the information, it adjusts
passenger compartment air intake speed by means of the fan motor
and air temperature by a mixer actuator. It also controls interior air
circulation via a specific actuator.
When required, the ECU automatically activates
the cooling circuit and dehumidifies the air by operating the air
conditioner compressor (
See E6021 COMPRESSOR ENGAGEMENT
).
For more details,
see DESCRIPTION AND OPERATION: 5040C air conditioner box and
components
.
The control panel is lit up when the side
lights are on.The fan circuit is protected by a specific
fuse, in the junction unit under the dashboard, controlled by the
passenger compartment air fan relay, located in the duct/distributor
unit.The fan only operates when the ignition
is switched ON.