ResMed Stellar Serie Guide De L'utilisateur page 35

Problem / possible cause
Pressure settings are too low for the air
delivery components being used.
Learn Circuit failed
• The circuit configuration is
inappropriate as the impedance
detected is too high.
• Too many components have been
included or the impedance of
accessories in use is above ResMed's
recommendation, eg, type of filter,
external humidifier, air tubing.
The delivered airflow is not humid/heated although the H4i humidifier is
in use
The humidifier is not properly attached.
The humidifier does not heat.
The humidifier does not work.
The water chamber is empty.
USB stick is not readable or writeable
The USB stick contains unreadable data,
does not have enough space available, is
not compatible with the device.
USB stick is defective.
FiO sensor calibration failure
2
FiO sensor is not attached properly.
2
FiO sensor is used or defective.
2
LCD: is displayed in the header.
Battery is not charging.
Solution
Perform the Learn Circuit function to
adjust the therapy pressure according to
your air tubing system.
Review the components included in the
circuit configuration and adjust as
appropriate, then rerun Learn Circuit (see
"Setup menu" on page 18).
Correctly attach the humidifier.
The device is currently powered by
battery use or not connected to the
mains.
Return the device and the humidifier for
servicing.
Fill the water chamber of the humidifier.
Consult your clinician.
Replace the USB stick after consulting
your clinician.
For the correct attachment of the FiO
sensor, see "Using the FiO2 monitoring
sensor" on page 10.
If the lifetime of the FiO
exceeded one year please replace the
FiO sensor and start calibration again.
2
• Ensure the ambient temperature
conditions are within the specified
operating range. If the problem persists
within the specified operating conditions
please return the device for servicing.
• Power off the device. Power on the
device again.
2
sensor has
2
Troubleshooting 29