Troubleshooting
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59
Alarm message
Action
Flow sensor fault
Replace expiratory flow sensor.
Flow sensor not calibrated
Perform a Learn Circuit.
High FiO
2
1.
Check the patient's status.
2.
Check and adjust the oxygen supply.
3.
Perform a Learn Circuit to recalibrate the oxygen sensor.
High Leak
1.
Check the patient's status.
2.
Inspect the circuit, expiratory valve and proximal lines for leak. When in use, check
for leaks around the mask.
3.
When using vented therapy, check the mask type setting.
4.
Perform a Learn Circuit.
High MVe
1.
Check the patient's status.
2.
Inspect the expiratory valve. If necessary, replace the expiratory valve.
3.
Perform a Learn Circuit.
High MVi
1.
Check the patient's status.
2.
Inspect the circuit and expiratory module for leaks.
3.
Perform a Learn Circuit.
High PEEP
1.
Check the patient's status.
2.
Inspect the circuit and expiratory valve for obstruction. When in use, check for
obstruction in proximal lines.
3.
Perform a Learn Circuit.
High pressure
1.
Check the patient's status and airway.
2.
Inspect the circuit for obstruction.
3.
Perform a Learn Circuit.
High Pulse Rate
Check the patient's status.
High Resp Rate
1.
Check the patient's status.
2.
Perform a Learn Circuit.
High SpO
2
Check the patient's status.
High Vte
1.
Check the patient's status.
2.
Inspect the expiratory valve. If necessary, replace the expiratory valve.
3.
Perform a Learn Circuit.
High Vti
1.
Check the patient's status.
2.
Inspect the circuit and expiratory module for leaks.
3.
Perform a Learn Circuit.
Incorrect circuit
1.
Check that the circuit is correctly connected and matches the circuit type selected.
2.
Inspect the circuit, expiratory valve and proximal lines.
3.
Perform a Learn Circuit.
Internal battery degraded
1.
Connect the Astral to mains AC power.
2.
Return the device for service to replace the internal battery.
The internal battery run time indicator may no longer be accurate and should not be relied
upon.
Last self-test failed
1.
Perform a Learn Circuit.
2.
If problem persists, return the device for service.
Low internal battery
Connect the Astral to mains AC power to allow the battery to recharge.
