2006 Hummer H3 Owner's Manual - Page 139

Climate Controls Climate Control System #(Air Conditioning): Press the left knob on the control panel to turn the air conditioning system on or off. An indicator light on the button will come on to let you know the air conditioning is activated. When the system is on, this setting cools and dehumidifies the air entering your vehicle. The air conditioning will not function if the fan is turned off. If air conditioning is selected with fan off, the indicator will flash three times and then turn off. You may notice a slight change in engine performance when the air conditioning compressor shuts off and turns on again. This is normal. The system is designed to make adjustments to help with fuel economy while still maintaining the selected temperature. With this system you can control the heating, cooling, and ventilation of your vehicle. In-between modes are available by moving the right control knob between modes with symbols. The in-between mode will be a combination of the two modes that the control is selected between. Temperature: Turn the left knob on the control panel to adjust the temperature of the air in the vehicle. Turn the knob clockwise or counterclockwise to increase or decrease the temperature. 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. 9 (Fan): Turn the center knob on the control panel to control the fan speed. Turn the knob clockwise or counterclockwise to increase or decrease the fan speed. 3-21