Air Systems - EICAS Messages

Message Level Light Condition
APU BLEED VAL Advisory VALVE APU Bleed Valve position disagrees with the commanded position.
L/R
BLD DUCT LEAK
Caution DUCT LEAK A high temperature Bleed Air Leak is detected.
BLEED ISLN VAL Advisory VALVE Bleed Isolation Valve position disagrees with the commanded position.
CABIN ALTITUDE Warning CABIN ALTITUDE Cabin Altitude excessive.
CABIN AUTO INOP Caution AUTO INOP Automatic Pressurization Control has failed or the cabin altitude mode selector is in manual.
AFT/FWD CABIN TEMP

MID CABIN TEMP

Advisory INOP A fault in the Zone Temperature Controller or Trim Air switch OFF.
L/R
ENG BLEED OFF
Advisory OFF Engine Bleed Air Valve is closed for a system fault.
L/R
ENG BLEED VALVE
Caution BLEED Engine Bleed Air Temperature excessive.

Note: The associated engine Bleed Air Valve and the HP Bleed Valve are automatically closed. The system can be reset and the valves enabled to open by selecting the associated Engine Bleed Air Switch OFF then ON.

L/R
ENG HIGH STAGE
Advisory HI STAGE Engine Bleed System Pressure is excessive and the high pressure bleed air valve has automatically locked closed.
EQPT OVHT Advisory OVHT Forward Equipment Cooling system inoperative.
FLT DECK TEMP Advisory INOP Duct overheat, fault in the Zone Temperature Controller or Trim Air switch off.
L/R
PACK OFF
Advisory PACK OFF Pack Valve is closed.
L/R
PACK TEMP
Advisory INOP

Automatic Control System fault or overheat.

TRIM AIR Advisory OFF Trim Air switch off.
FWD EQPT SMOKE Advisory SMOKE Smoke detected in the forward Equipment Cooling ducts.
L/R
RECIRC FAN
Advisory INOP Fan is failed or is not operating.

Anti-Ice and Rain