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Problem/Possible cause Solution
The patient is using a paediatric
mask with a set pressure less
than 8 cm H
2
O.
Disable SmartStart/Stop.
Pressure rises inappropriately
Talking, coughing or breathing in
an unusual manner.
Avoid talking with a nasal mask on, and breathe as normally as
possible.
Mask cushion is buzzing against
the skin.
Adjust the headgear.
Cushion seated incorrectly
causing excessive leak.
Adjust headgear or re-fit cushion.
Displays message: High temperature fault, refer to user manual
Device has been left in a hot
environment.
Allow to cool before re-use. Disconnect the power cord and then
reconnect it to restart the device.
Air filter is blocked.
Replace your air filter. Disconnect the power cord and then
reconnect it to restart the device.
Air tubing is blocked.
Check your air tubing and remove any blockages. Disconnect the
power cord and then reconnect it to restart the device.
Humidity level setting is too
high, resulting in accumulation
of water in the air tubing.
Turn the humidity level setting down and empty the water from the
air tubing.
Displays 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.
Fully insert the DC plug.
A non-ResMed power supply
unit is connected to the device.
Remove the power supply unit and replace with a ResMed power
supply unit.
The power supply unit is being
covered by bedding.
Make sure that the power supply unit is free from bedding, clothes
or other objects that could cover it.