Ram Trucks 2015 3500 - Owner Manual - Manual (Page 410)

with maximum blower and warm temperature settings
for best windshield and side window defrosting.
NOTE:
The air conditioning compressor operates in MIX
and DEFROST, or a blend of these modes even if the A/C
button is not pushed. This dehumidifies the air to help
dry the windshield. To improve fuel economy, use these
modes only when necessary.
Recirculation Control
Push the Recirculation Control button to
choose between outside air intake or recircula-
tion of the air inside the vehicle. A LED will
illuminate when you are in Recirculation
mode. Only use the Recirculation mode to temporarily
block out any outside odors, smoke, or dust, and to cool
the interior rapidly upon initial start-up in very hot or
humid weather.
NOTE:
• If the RECIRCULATION button is pushed when the
system is in Defrost mode, the Recirculation LED
indicator will flash three times and then turn off to
indicate Recirculation mode is not allowed.
• 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 Recirculation
mode will cause windows to fog on the inside because
of moisture buildup inside the vehicle. For maximum
defogging, select the outside air position.
• The A/C can be deselected manually without disturb-
ing the mode control selection by pushing the A/C
button.
408 UNDERSTANDING YOUR INSTRUMENT PANEL