Defrost

When DEFROST is selected:

• The air inlet door vacuum control motor is at no vacuum, admitting only outside air into the passenger compartment.
• The panel/floor door and panel/defrost door vacuum control motors are at no vacuum, directing airflow to the defroster duct and the side window demisters. A small amount of airflow from the side window demisters will be present.
• The heater control valve is at no vacuum allowing the flow of hot coolant to the heater core. Blended air temperature is available.
• The temperature can be adjusted to heat or cool the air below the outside temperature.
• The A/C compressor will operate if the outside temperature is above approximately 6°C (43°F).
• The blower motor is ON.