Datex-Ohmeda Anesthesia Delivery Unit S/5 Technical Reference Manual page 379

Message
in
Normal
Screen
Ventilator
communi-
cation
error
Ventilator
*
failure
Ventilator
*
failure
Ventilator
*
failure
Ventilator
*
failure
Ventilator
*
failure
Ventilator
*
failure
Ventilator
*
failure
Document No. 8502855
Message in Error condition /
diagnostic possible cause
page
N/A Ventilator
communication broken
with the A-ELEC module.
Beware of the Ventilator
communication error
alarm will be a sub alarm
to Ventilator failure
alarm.
pilot press err During the A-EV1 Self-
test was the pilot
"Low pilot press".
pressure outside the
On units with Main
specification range of
SW <6.1 SW
270 – 330 cmH
this range only applies to
Ventilator software
version 7.6 and onwards.
Sensor error Zero point out of range
Underflow or overflow of
sensor.
Press Compar err Comparison error
between circuit and
monitoring pressure
sensors
Inspiration valve Inspiration valve has not
closed when expiration
starts
Expiration valve PEEP valve does not open
quickly enough
Expir valve 2 Expiration valve does not
open quickly enough
EEPROM error Calibration data lost
or
broken CPU board
AUTO/ Mode evaluated from
MAN switch both micro switches
Recommended
action
If alarm is single check
communication cable
between the A-EV1 and
A-ELEC.
Replace Digipower board
A-ELEC or Ventilator CPU
board.
Calibrate pilot pressure
regulator.
Check pipeline gas
supply pressure.
O. Note:
2
Replace sensor or zeroing
valve
Check the circuit and
monitor sensor
calibration and replace if
needed
Replace valve
Replace valve or
membrane
Replace valve or
membrane
Replace EEPROM and
recalibrate. Note that this
always happens when a
new EEPROM is started
for the first time
N/A
Troubleshooting A-EV1
Err
log
x
x
x
x
C-53