Air Conditioning - Hummer 2007 H2 Owner's Manual

Air Conditioning

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(Air Conditioning): Press this button to turn
the air conditioning (A/C) compressor on and
off. The snowflake symbol will appear on
the display when the A/C is on.
Pressing this button when the outside temperature
is too cool for air conditioning to be effective will
make the snowflake symbol flash three times
and then turn off to let you know that the air
conditioning mode is not available. If the air
conditioning is on and the outside temperature
drops below a temperature which is too cool for air
conditioning to be effective, the snowflake
symbol will turn off to let you know that the air
conditioning mode has been canceled.
When air conditioning is selected or in AUTO
mode, the system will run the air conditioning
automatically to cool and dehumidify the air
entering the vehicle. If you select A/C off while in
front defrost, defog or recirculation, the A/C
snowflake symbol will turn off, but the A/C
compressor will still run to help prevent fogging.
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On hot days, open the windows long enough to let
hot inside air escape. This reduces the time it takes
for your vehicle to cool down. Then keep your
windows closed for the air conditioner to work
its best.
On cool, but sunny days while using manual
operation of the automatic system, use bi-level to
deliver warm air to the floor and cooler air to
the instrument panel outlets. To warm or cool the
air delivered, turn the temperature knob to the
desired setting.
In AUTO mode the system will cool and dehumidify
the air inside the vehicle. Also while in AUTO
mode, the system will maximize its performance
by using recirculation as necessary.
Heating
On cold days when using manual operation of the
automatic system, choose floor mode to deliver
air to the floor outlets. To warm or cool the
air delivered, turn the temperature knob to the
desired setting.
If you want to use the automatic mode, press
AUTO and adjust the temperature by turning the
temperature knob.
The heater works best if you keep the windows
closed while using it.