Anti-Ice Panel

Engine Anti-ice Switch

Engine Anti-ice SwitchDESCRIPTION - Each engine nacelle is anti-iced by pneumatic bleed air. The engine anti-ice ducting is independent of the pneumatic system ducting. Each engine anti-ice valve is electrically controlled by the respective ENG ANTI ICE switch and is pneumatically operated. The engine must be running for the valve to open. When either engine anti-ice valve is open:

  • Maximum N1 is limited
  • Continuous ignition is provided
  • Minimum idle RPM is increased.

The valves open with a loss of electrical power.

ON - The ENG ANTI ICE Switch controls the engine anti-ice system. When selected ON:

  • The ON light illuminates blue
  • ENG A. ICE message appears on ECAM MEMO display
  • Engine anti-ice valves open if pneumatic supply is available

OFF - When selected to OFF the ON light extinguishes and the respective engine anti-ice valve closes.

FAULT - The ENG ANTI ICE FAULT Light illuminates amber if the engine anti-ice valve position disagrees with selected position. The FAULT light also illuminates momentarily when valves are in transit.