AIR COND / PNEUMATIC
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PUSH IN: Allows automatic operation by the AMS. Turns on both recirculation fans, according to system logic.
PUSH OUT: Turns off both recirculation fans.
PUSH IN: Allows automatic operation by the AMS. Opens the respective pack flow control valve.
PUSH OUT: Manually closes the respective pack flow control valve.
NOTE: During first engine start, Emergency Ram Air Valve Built-In Test (BIT) commands PACK 1 OFF.
PUSH IN: Allows automatic operation by the AMS. Commands the respective engine bleed valves, according to system logic.
PUSH OUT: Manually closes the engine bleed valves.
Controls cockpit temperature relative to the knob position.
Controls passenger cabin temperature relative to the knob position.
ATTND position: Enables the flight attendant panel(s) to control the cabin temperature. An “ENABLED” led turns on in the flight attendant panel(s) indicating they have control of the temperature.
PUSH IN: Allows automatic operation by the AMS. This position opens the cross-bleed valve, according to system logic.
PUSH OUT: Manually closes the cross-bleed valve.
PUSH IN: Allows automatic operation by the AMS. Commands the APU bleed valve, according to system logic.
PUSH OUT: Closes the APU bleed valve.
