GE Aestiva 5 Service Manual

5 Alarms and Troubleshooting
1006-0939-0005-55-5
Apnea Alarm 
StandbyLow Normal condition after 
End Case, power-up, or 
ACGO change from On to 
OffMonitoring resumes after first 
breath (mechanical) or 2 
breaths within 30 seconds 
(non-mechanical).- - -
Apnea Alarm Off Low The cardiac bypass option 
is selected (alarm limit 
menu).Apnea alarms are normally 
turned off when this option is 
selected.- - -
Aux Gas Outlet On Medium 
(low after 
acknowledged)The outlet selection 
switch is set to the...

Aestiva 
5-61006-0939-000
5-6
Cal Flow Sensors Low The last flow sensor 
calibration failed.Calibrate the flow sensors. 
Look for water in the flow 
sensor tubes. Dry if 
necessary.Contact a qualified 
service 
representative.
Calibrate O
2 
SensorLow O
2%>110% Does the sensor measure 
21 %  O
2 in room air?Calibrate O
2 sensor.
Canister open Medium The canister release is 
open (large leak) without 
a bypass mechanism.Close the canister release. A switch checks the 
release position.
Cannot Drive...

5 Alarms and Troubleshooting
1006-0939-0005-75-7
Control Settings 
Input has FailedMinimum 
monitoring 
(Medium)Ventilator malfunction. Ventilate manually. 
Monitoring is still available.Contact a qualified 
service 
representative.
CPU Failure Minimum 
shutdown 
(High)Ventilator malfunction. Ventilate manually. 
Monitoring is not reliable.Contact a qualified 
service 
representative.
CPU Internal Error Minimum 
shutdown 
(High)Ventilator malfunction. Ventilate manually. 
Monitoring is not...

Aestiva 
5-81006-0939-000
5-8
Heliox Mode is On Low Control setting on 
ventilation setup menu.When Heliox is used, the 
ventilator must adjust volume 
calculations.- - -
High O
2Medium O2% > alarm high limit 
setting.Is the limit set correctly? What 
is the O
2 flow?
Did you just push Flush? Does 
the sensor see 21% O
2in 
room air?Calibrate O
2 sensor.
Replace O
2 sensor.
High Paw High Paw is greater than Plimit. 
The ventilator cycles to 
expiration.Are Plimit and other controls 
set correctly? Look...

5 Alarms and Troubleshooting
1006-0939-0005-95-9
Internal Ventilator 
Clock Too FastMinimum 
shutdown 
(High)Ventilator malfunction. Ventilate manually. 
Monitoring is not reliable.Contact a qualified 
service 
representative.
Internal Ventilator 
Clock Too SlowMinimum 
shutdown 
(High)Ventilator malfunction. Ventilate manually. 
Monitoring is not reliable.Contact a qualified 
service 
representative.
Invalid Circuit 
ModuleLow The system does not 
recognize the type of 
circuit module installed....

Aestiva 
5-101006-0939-000
5-10
Low Paw Medium Paw does not rise at least 
4 cm from the lowest 
pressure measured 
during the last 20 
seconds.Are circuit connections OK? 
Look at the Paw gauge on the 
absorber.Look for circuit 
disconnection.
Low Ve Medium Exhaled minute volume 

5 Alarms and Troubleshooting
1006-0939-0005-115-11
Monitoring Only  Medium A severe malfunction 
prevents mechanical 
ventilation. Other alarms 
may also occur. Ventilate manually. Cycle 
system power (On- Standby-
On). If the alarm clears, 
restart mechanical 
ventilation.Contact a qualified 
service 
representative.
No Circuit Module Low The patient circuit module 
is not installed.Install a module. Refer to the 
Setup section.Optical sensors look 
for tabs on the back 
of the module. Is the 
module...

Aestiva 
5-121006-0939-000
5-12
O2 Sensor out of 
circLow O2 sensor not installed in 
breathing circuit module; 
sensor not measuring gas 
in breathing circuit.Install a breathing circuit 
module and an O
2 sensor.- - -
On Battery - Power 
OK?Medium
(low after 
acknowledged)The mains supply is not 
connected or has failed 
and the system is using 
battery power.Ventilate manually to save 
power. At full charge, the 
battery permits approx. 30 
minutes of mechanical 
ventilation.Make sure power is...

5 Alarms and Troubleshooting
1006-0939-0005-135-13
Pres/Vol Mon 
InactiveMedium Outlet selection switch is 
set to auxiliary gas outlet.Connect the patient circuit to 
the auxiliary gas outlet or set 
the switch to the common gas 
outlet for normal operation.- - -
Pressure Limit 
Switch FailureMinimum 
monitoring 
(Medium)A pressure safety switch 
activated at a Paw 

Aestiva 
5-141006-0939-000
5-14
Sustained Paw High Paw > sustained pressure 
limit for 15 seconds
3.Check tubing for kinks, 
blockages, disconnects.Calibrate the flow 
sensors.
System Leak?  Medium Delivered volumes do not 
match set volumes.If you are using Heliox, select 
Heliox on the ventilator setup 
menu. Look for leaks in the 
manifold. Compare set to 
delivered volumes.Calibrate the flow 
sensors. 
Drain water buildup 
from the breathing 
system.
Vaux_ref Out-of-
RangeMinimum 
shutdown...