ResMed S9 AutoSet Information Manual page 2

Troubleshooting
If there is a problem, try the following suggestions. If the problem cannot be solved, contact your
equipment supplier or ResMed. Do not attempt to open these devices.
Problem/Possible cause
No display
Power is not connected.
The DC plug is partially inserted into the
back of the device.
Insufficient air delivered from the device
Ramp time is in use.
Air filter is dirty.
Air tubing is not connected properly.
Air tubing is blocked, pinched or
punctured.
Mask and headgear are not positioned
correctly.
Incorrect air tubing selected.
Device does not start when you breathe into the mask
Breath is not deep enough to trigger
SmartStart/Stop.
There is excessive leak.
SmartStart/Stop is disabled.
Device does not stop when you remove your mask
SmartStart/Stop is disabled.
2
Solution
Ensure the power cable is connected and the power
outlet (if available) is on.
Fully insert the DC plug.
Wait for air pressure to build up or change ramp time.
Replace air filter.
Note: Replace the air filter every six months (or more
often if necessary).
Check air tubing.
Unblock or free the air tubing. Check the air tubing for
punctures.
Adjust position of mask and headgear.
If you are using the SlimLine or Standard air tubing
ensure that you have the correct air tubing selected via
the menu.
Take a deep breath in and out through the mask.
Adjust position of mask and headgear.
Air tubing not connected properly. Connect firmly at both
ends.
Enable SmartStart/Stop.
Enable SmartStart/Stop.