Datex-Ohmeda 7100, Technical Reference Manual

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5 Troubleshooting
1006-0836-000 02/03 5-13
System Leak? User Alarm Leak detected between
ventilator and patient
circuit.
If you are using Heliox, select
Heliox on the ventilator setup
menu. Look for leaks in the
absorber system.
Problem with flow sensors?
Calibrate the flow sensors.
Drain water buildup from the
breathing system and inspect
for leaks (repair).
Inspect or replace flow sensors.
The primary cause for
this message is
that the bellows
has emptied.
Refill the bellows.
This message
combines the
“Unable to Drive
Bellows” and
“System Leak?”
messages in the
Aestiva 7900
Ventilator.
Perform the
Breathing System
Leak Tests.
Vext_ref
Out-of-Range
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
VBUS Fail
Out-of-Range
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Ventilate Manually User Alarm A severe malfunction
prevents mechanical
ventilation and
monitoring.
Other alarms may also
occur.
Ventilate manually.
Use a stand-alone monitor.
Cycle system power (On-
Standby-On).
If the alarm clears, restart
mechanical ventilation.
Replace:
• Control Board.
Verify Low
◊
E
Limit User Alarm The audible circuit leak
alarm is off (Alarm
Settings menu) but the
low
◊
E
alarm is not
consistent with the
ventilator settings.
Set the low
◊
E
alarm.
Volume Apnea User Alarm No mechanical breaths or
spontaneous breaths
> 5 mL in last 30
seconds.
Check patient.
Bag as needed.
Check for disconnects.
If the patient is on a heart lung
machine, select Cardiac
Bypass on the alarm menu.
Vol Apnea > 2 min User Alarm No mechanical breaths or
spontaneous breaths
>5 mL in last 120
seconds.
Check patient.
Bag as needed.
Check for disconnects.
If the patient is on a heart lung
machine, select Cardiac
Bypass on the alarm menu.
Message Alarm/Error Cause User Action/Concerns Service Repair