Alarm and Prompt Messages Alarms and Messages
6 - 22 046-003777-00 A5/A3™ Operating Instructions
6.6.1.5 Ventilator Control Board Runtime Alarm
O
2
-N
2
O Ratio Error N
2
O flow is greater than 0.5 L/
min and greater than 4 times
O
2
flow for 1.6 seconds.
High Runtime No
Flowmeter Comm
Stop
Lost communication with
CPU board for 10 seconds.
When this alarm is triggered,
the fresh gas flow value will
be displayed as '---'.
High Runtime No
NO Fresh Gas Fresh gas flow is less than 50
mL/min for 5 seconds when
the machine is not in
Standby mode or Monitor
mode..
Medium Runtime Yes
Internal N
2
O Flow
Failure
The I2C communication
between the CPU and N
2
O
flow sensor has failed.
Low Runtime No
Internal O
2
Flow
Failure
The I2C communication
between the CPU and O
2
flow
sensor has failed.
Low Runtime No
Internal Air Flow
Failure
The I2C communication
between the CPU and Air
flow sensor has failed.
Low Runtime No
MESSAGE CAUSE
ALARM
PRIORITY
MACHINE
MODE WHEN
CHECKED
DISABLE IN
STANDBY
MODE
TABLE 6-7 Electronic Flowmeter Board Runtime Alarm Messages
MESSAGE CAUSE
ALARM
PRIORITY
MACHINE
MODE WHEN
CHECKED
DISABLE IN
STANDBY
MODE
Aux Control
Module Comm
Stop
Lost communication with
CPU board for 10 seconds.
High Runtime No
Ventilator Voltage
Error
5 V or 12 V voltage error High Runtime No
PEEP Valve Failure 1. PEEP valve voltage error
2. PEEP valve pressure
error
Medium Runtime No
Insp Valve Failure 1. Inspiratory valve voltage
error
2. Inspiratory valve flow
error
Medium Runtime No
Safety Valve
Failure
PEEP safety valve voltage
error
Medium Runtime No
Flow Sensor
Failure
1. Inspiratory flow is out of
range.
2. Expiratory flow is out of
range.
Low Runtime No
* 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
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