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Home >> Ford >> 1998 >> Econoline Custom >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Heater System) >> Operation >> Main System Controls >> Function Selector Switch
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Function Selector Switch

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The function selector switch can be placed in OFF, vent, floor, mix and defrost positions. The position of function selector switch determines whether function doors are open, partially open or closed. Function doors direct airflow to selected outlets. The 3 vacuum motors and doors are outside/recirculated air, defrost/panel and defrost/floor.