Chrysler PT Cruiser Owner's Manual page 217

NOTE:
Recirculation Mode will not operate in Floor, Mix or
Defrost modes.
See "Circulation Control" in this section, for proper or
extended use of this position.
Circulation Control
Rotate this control to choose be-
tween outside air intake or recir-
culation of the air inside the ve-
hicle. A lamp will illuminate when
you are in recirculate mode. Only
use the recirculate mode to tem-
porarily block out any outside
odors, smoke, or dust and to cool
the interior rapidly upon initial
startup in very hot or humid
weather.
UNDERSTANDING YOUR INSTRUMENT PANEL 215
NOTE: Continuous use of the Recirculation mode may
make the inside air stuffy and window fogging may
occur. Extended use of this mode is not recommended.
In cold or damp weather, the use of the recirculate
position will cause windows to fog on the inside because
of moisture buildup inside the vehicle. For defogging,
select the Outside Air position.
NOTE: Recirculation Mode will not operate in Floor,
Mix or Defrost modes.
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