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Home >> Saab >> 1999 >> 9-3 Base, 2D Hatchback, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Automatic >> Operation >> Automatic Climate Control (Acc) Control Module >> Defrost Mode

Defrost Mode

When front defrost button is pressed one time, ACC system will set fan blower motor speed to 18-amps, A/C ON (ECON OFF), air distribution to defrost position, normal temperature control, recirculated air to OFF position, heated rear window is turned ON, AUTO goes off, and full display. If front defrost button is pressed a second time, air distribution remains in defrost position and all other functions are restored if they have not been manually changed since front defrost was initially selected.

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