Econ (Economy) Switch
WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
By pressing the ECON switch, the display screen should indicate ECON and the compressor always turns OFF. With the compressor OFF, the system will not remove heat (cool) or de-humidify. The system will maintain the in-vehicle temperature at the set temperature when the set the temperature is above the ambient (out-side) temperature. The system will set the intake doors to the outside air position.