This switch controls the wing anti-ice system on the left and right sides simultaneously.
OFF: ON light goes off. Wing anti-icing control valves close.
ON: Blue light and ECAM MEMO “WING A. ICE”. Wing anti-ice control valves open if a pneumatic supply is available. On the ground the wing anti-icing control valves open for 30 s only (test sequence). WAI appears on the EWD when the thrust levers are in the TOGA or FLX/MCT detent.
FAULT: Light comes on amber, and ECAM caution, if:
The position of the anti-icing control valve is not the required position, or
Low pressure is detected.
ENG ANTI ICE pb
OFF: No light. Engine anti-ice valves close.
ON: Blue light and ECAM MEMO “ENG A. ICE”. Engine anti-ice valve opens if bleed air is available. When the valve is opened and the anti-ice ENG pushbutton switch is selected ON continuous ignition is selected. This makes the IGNITION memo appear on the ECAM. NAI appears on the EWD when the thrust levers are in the TOGA or FLX/MCT detent.
FAULT: Amber light and ECAM caution, if the position of the anti-icing valve disagrees with the ENG pushbuttons selection.
PROBE/WINDOW HEAT pb
AUTO: Probes/Windows are heated automatically- in flight, or on the ground (except TAT probes) provided one engine is running.
ON: Light comes on blue. Probes and windows are heated permanently.