4
Problem/possible cause Solution
Mask cushion is buzzing against the
skin.
Adjust the headgear.
Cushion seated incorrectly causing
excessive leak.
Adjust headgear or re-fit cushion.
Displays error message: Heated tube fault, replace tube
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.
There is a fault in your ClimateLine air
tubing.
Discontinue using your ClimateLine air tubing and contact
your clinician/service provider. Use SlimLine, Standard or
3m air tubing in the interim.
Displays error message: Humidifier fault, replace humidifier
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.
There is a fault in your H5i heated
humidifier.
Discontinue using your H5i and contact your
clinician/service provider.
Displays error 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. Discconect 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.
Humidifier setting is too high, resulting
in accumulation of water in the air
tubing.
Turn the humidifier setting down and empty the water
from the air tubing.
Displays error message: Check ResMed 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.
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