ResMed S9 AutoSet Information Manual page 3

Problem/Possible cause
SmartStart/Stop is enabled but the device does not stop automatically when you remove your
mask
Incompatible mask system being used.
The patient is using a nasal pillows mask
with a set pressure less than 7 cm H
Pressure rises inappropriately
Talking, coughing or breathing in an
unusual manner.
Mask cushion is buzzing against the skin.
Displays error message: High temperature fault, refer to user manual
Device has been left in a hot
environment.
Air filter is blocked.
Air tubing is blocked.
Humidifier setting is too high, resulting in
accumulation of water in the air tubing.
Displays error message: Check ResMed 30/90W Power Supply Unit and fully insert the
connector
The DC plug is partially inserted into the
back of the device or inserted too slowly.
A non-ResMed power supply unit is
connected to the device.
The power supply unit is being covered
by bedding.
Displays error message: Tube blocked, please check your tube
Air tubing is blocked.
Solution
Only use equipment recommended by ResMed.
Disable SmartStart/Stop.
O.
2
Avoid talking with a nasal mask on, and breathe as
normally as possible.
Adjust the headgear.
Allow to cool before re-use. Disconnect the power cord
and then reconnect it to restart the device.
Replace your air filter. Disconnect the power cord and
then reconnect it to restart the device.
Check your air tubing and remove any blockages.
Disconnect the power cord and then reconnect it to
restart the device.
Turn the humidifier setting down and empty the water
from the air tubing.
Fully insert the DC plug.
Remove the power supply unit and replace with a
ResMed power supply unit.
Make sure that the power supply unit is free from
bedding, clothes or other objects that could cover it.
Check your air tubing and remove any blockages.
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