Chevrolet 2006 Epica Owner's Manual page 130

For quick cool down on hot days, press the AUTO
button and the system will automatically enter
recirculation mode and the temperature will be at
the full cold position for maximum cooling.
Using these settings together for long periods of time
may cause the air inside of your vehicle to become too
dry. To prevent this from happening, after the air in
your vehicle has cooled, turn the recirculation mode off.
The air conditioning system removes moisture from
the air, so you may sometimes notice a small amount
of water dripping underneath your vehicle while idling
or after turning off the engine. This is normal.
Outside Temperature: To display the outside
temperature, press the temperature control knob.
Pressing this knob again will cancel the outside
temperature display, otherwise the display will return
to the temperature inside of the vehicle after about
five seconds.
The outside temperature sensor is located near the
front bumper, so the displayed temperature may
be affected by road or engine heat while the vehicle is
idling or traveling at slow speeds. For this reason,
the displayed temperature will be most accurate at
speeds over 25 mph (40 km/h).
3-24
Sensors
The solar sensor (A) on your vehicle monitors solar
radiation and uses the information to maintain the
selected temperature by initiating needed adjustments
to the temperature, the fan speed and the air delivery
system. Do not cover the solar sensor located in
the center of the instrument panel, near the windshield,
or the system will not work properly.