Troubleshooting - ResMed AirSense 11 Manual

Troubleshooting

If there is a problem, try the following suggestions. If you are not able to fix the problem, contact your local
ResMed dealer or ResMed office. Do not open the device.
General troubleshooting
Problem/possible cause
Air is leaking from around the mask
Mask may be fitted incorrectly.
The patient is getting a dry or blocked nose
Humidity level may be set too low.
There are droplets of water in the mask and air tubing
Humidity level may be set too high.
Tube temperature may be too low
The patient is getting a very dry mouth
Air may be escaping through the patient's mouth.
The patient feels that too much air is being delivered from the device
Ramp may be turned off
The patient feels that not enough air is being delivered from the device
Ramp may be in progress
Ramp start pressure may be too low
No display
Backlight on the screen may have turned off. It turns
off automatically after a short period of time
Power may not be connected.
Therapy has stopped but the device is still blowing air
Device is cooling down
Humidifier tub is leaking
Humidifier tub may not be assembled correctly.
Humidifier tub may be damaged or cracked.
The patient is not getting enough air/oxygen flow is disrupted
Tubing or humidifier tub may be blocked
The patient's therapy data has not been transmitted
Wireless coverage may be poor.
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Solution
Make sure the mask is fitted correctly. See the mask user guide for fitting
instructions or run the Mask Fit function.
Increase the Humidity Level.
Decrease the Humidity Level.
Increase the Tube temp
Increase the Humidity Level.
The patient may need a chin strap to keep the mouth closed or a full face
mask.
Use the Ramp Time option.
Wait for air pressure to build up or turn Ramp Time off
Increase Ramp start pressure.
Press the Start therapy /standby button located at the top of the device or
touch the screen.
Connect the AC adaptor and make sure the plug is fully inserted.
Device blows a small amount of air in order to avoid condensation in the
air tubing. it will stop automatically after 30 minutes.
Check for damage and reassemble the humidifier tub correctly.
Replace the humidifier tub.
Check for blockages. Reconnect the tubing and reassemble the humidifier
tub correctly.
Advise the patient to place the device where there is coverage (ie, on
their bedside table, not in a drawer or on the floor).
The wireless signal strength icon
bars are displayed, and poor coverage when fewer bars are displayed.
indicates good coverage when all