A5/A3™ Operating Instructions 046-003777-00 6 - 23
Alarms and Messages Alarm and Prompt Messages
Check Flow
Sensors
1. Inspiratory reverse flow
2. Expiratory reverse flow
High Runtime N/A *
Pinsp Not
Achieved
Pinsp does not reach the
Pinsp setting in pressure
mode.
Low Runtime N/A *
Vt Not Achieved Vt does not reach the Vt
setting in volume mode.
Low Runtime N/A *
Auto Ventilation
Disabled
When system is in the Auto
Ventilation, Non functional
state
High Runtime N/A*
Automatic
Ventilation
Disabled
The machine is in the
automatic ventilation
disabled state.
Low Runtime No
Auto Ventilation
Disabled-Leak Test
Failed
Automatic Circuit Leak
Test failed, and the result is
"Manual Only".
Low Runtime No
Patient Circuit
Leak
1. Ppeak is less than
2cmH
2
O for continuously
30s during mechanical
ventilation.
2. Patient is not connected.
Medium Runtime N/A*
CO
2
Absorber
Canister Not
Locked
CO
2
Canister is not
mounted.
High Runtime No
O
2
Sensor
Disconnected
O
2
Sensor is not
connected.
Low Runtime No
Replace O
2
sensor The O
2
value is less than 5
%.
Medium Runtime No
Perform 100% O
2
Sensor Calibration
O
2
value is greater than
110 % or between 5 % and
15 % for 3 seconds.
Low Runtime No
Ventilator Comm
Stop
Lost communication with
the CPU board for 10
seconds.
High Runtime No
Drive Gas Pressure
Low
Drive Gas Pressure is low. High Runtime No
O
2
Supply Failure O
2
Supply Failure High Runtime No
Fresh Gas Flow
Too High
In VCV and SIMV-VC
modes, the fresh gas flow
is greater than or equal to
the desired flow.
Low Runtime N/A*
MESSAGE CAUSE
ALARM
PRIORITY
MACHINE
MODE WHEN
CHECKED
DISABLE IN
STANDBY
MODE
* N/A - Not Applicable. This alarm message does not exist within this mode and therefore cannot be
disabled or enabled.
TABLE 6-8 Ventilator Control Board Runtime Alarm Messages