AIRPLANE
OPERATIONS
MANUAL
ELECTRICAL
MARCH 28, 2002
2-05-15
Page
1
Code
01
EICAS MESSAGES
TYPE MESSAGE MEANING
WARNING
BATT 1 (2) OVTEMP
Associated battery temperature
is above 70°C.
ELEC ESS XFR FAIL
Automatic transfer to electrical
emergency condition has
failed.
GEN 1 (2, 3, 4) OVLD
Associated generator current is
above 400 A.
GEN 1 (2, 3, 4) OFF
BUS
Associated generator is
disconnected from the
electrical network after
engine stabilization due to
generator channel failure or
button released.
APU GEN OVLD
APU generator current is
above 400 A.
CAUTION
APU GEN OFF BUS
APU generator is
disconnected from electrical
network, due to open ALC,
with APU RPM above 95%
plus seven seconds. This is
caused by generator channel
failure or button released.
APU CNTOR CLSD
APU Starting Contactor (ASC)
or Line Contactor (ALC) is
inadvertently closed.
DC BUS 1 (2) OFF
Associated DC Bus is de-
energized. If DC Bus 1 is
deenergized the inverter
becomes inoperative.
ESS BUS 1 (2) OFF
Associated Essential Bus is
deenergized.
SHED BUS 1 (2) OFF
Associated Shed Bus is
deenergized.
BATT 1 (2) OFF BUS
Associated battery is discon-
nected from the electrical
network.
BKUP BATT OFF BUS
Backup battery is discon-
nected from the electrical
network.
To Next Page
