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GF0210_082
. If one pack is OFF, one OFV is driven close with preference to aft OFV over forward OFV
(i.e. if forward OFV is already closed, the aft OFV will not then be driven close).
GF0210_083
Rev 12, Aug 14, 2006 Flight Crew Operating Manual Volume 2
AIR CONDITIONING AND PRESSURIZATION
The following represents the EICAS symbols and logic for the BLEED and AIR CONDITIONING synoptic pages. The symbols are shown in serviceable and failure conditions.
GF0210_084
Volume 2 Flight Crew Operating Manual Rev 12, Aug 14, 2006
CABIN DELTA P
CABIN ALT Indicates that cabin differential pressure is greater than 10.85 psid.
AUTO PRESS FAIL
Indicates that both channels of the pressurization control are inoperative.
EMER DEPRESS
Indicates that EMER DEPRESS switch has been selected ON.
L . R BLEED LEAK
Indicates that a bleed leak has been detected in the L or R bleed ducts.
L . R BLEED SYS FAIL
Indicates that the affected bleed system has failed.
L . R PACK AUTO FAIL
Indicates that the affected automatic pack control is inoperative.
L . R PACK TEMP
Indicates that the manual temperature selection is out of range.
Indicates that a leak has been detected in the trim air ducts.
XBLEED FAIL
Indicates that the bleed crossfeed has failed, open or closed.
FGF0210_007b
Rev 12, Aug 14, 2006 Flight Crew Operating Manual Volume 2
AIR CONDITIONING AND PRESSURIZATION
AUTO PRESS FAULT
Indicates that one channel of the cabin pressure automatic control is inoperative.
AV FANS FAIL
Both fans are
failed in flight.
AV RACK FAN FAIL
Avionics rack fan has failed.
AVIONICS FAN FAIL
Avionics exhaust fan has failed.
CAB ALT LEVEL HI
Indicates that CABIN ALTwarning and caution levels have been reset for high altitude landingand take-off.
OUTFLOW VLV 1.2 FAIL
Indicates that the affected
outflow valve has failed.
TRIM AIR FAULT
Indicates that there is a trim air fault.
BLEED MISCONFIG
Indicates that the bleed air configuration is incorrect for operation.
HUMIDIFIER FAIL
Indicates that the humidifier in the cooling pack has failed.
L . R BLEED FAULT
Indicates that there is a loss of redundancy in the bleed system.
L . R PACK FAULT
Indicates that the affected pack
has a fault.
MAN PRESS FAULT
Indicates that one of the two
altitude limiters is inoperative. If
the airplane is above 20,000 feet,
the affected outflow valve, will
close automatically.
RAM AIR FAIL
Indicates that the ram air valve is failed in last selected position.
RECIRC FAN FAIL
Indicates that the recirculation fan has failed due to an underspeed.
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