ResMed Astral Series User Manual page 71

Troubleshooting
Alarm message
Disconnection alarm
Flow sensor fault
Flow sensor not calibrated
High FiO
2
High Leak
High MVe
High MVi
High PEEP
High pressure
High pressure protection
High Pulse Rate
High Resp Rate
High SpO
2
High Vte
High Vti
Incorrect circuit adapter
Incorrect circuit attached
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Action
1. Check the patient's status and airway.
2. Inspect the circuit and proximal lines for disconnection or excessive leak.
3. Perform a Learn Circuit.
Replace expiratory flow sensor.
Perform a Learn Circuit.
1. Check the patient's status.
2. Check and adjust the oxygen supply.
3. Perform a Learn Circuit to recalibrate the oxygen sensor.
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.
1. Check the patient's status.
2. Inspect the expiratory valve. If necessary, replace the expiratory valve.
3. Perform a Learn Circuit.
1. Check the patient's status.
2. Inspect the circuit and expiratory module for leaks.
3. Perform a Learn Circuit.
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.
1. Check the patient's status and airway.
2. Inspect the circuit for obstruction.
3. Perform a Learn Circuit.
The hardware pressure safety limit was exceeded. If problem reoccurs, return the device
for service.
Check the patient's status.
1. Check the patient's status.
2. Perform a Learn Circuit.
Check the patient's status.
1. Check the patient's status.
2. Inspect the expiratory valve. If necessary, replace the expiratory valve.
3. Perform a Learn Circuit.
1. Check the patient's status.
2. Inspect the circuit and expiratory module for leaks.
3. Perform a Learn Circuit.
1. Check that the correct circuit adapter is installed for the selected circuit type.
2. Perform a Learn 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.