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Problem/Possible cause Solution
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.
Water splashing on your face from the H5i
The water tub is overfilled. Check that the water level is below the maximum water level
mark.
Condensation is forming in the air
tubing and mask.
Turn the humidity level setting down via the menu.
Leaking water tub
The water tub may be damaged or
cracked.
Contact your service provider for a replacement.
The cleanable water tub is not
assembled correctly.
Check for damage and reassemble the cleanable water tub
correctly.
Air feels too warm/cold in the mask
The temperature of the ClimateLine
or ClimateLine
MAX
heated air tubing
is set too high/low.
Turn up/down the heated air tubing temperature via the menu.
Alarm is activated and the LCD screen display disappears
Power failure. Remove the patient’s mask until power is restored.
Power cord is disconnected or mains
power switch is turned off during
therapy.
Ensure the power cord is connected and the mains power
outlet (if available) is on.
Displays message: Tube blocked, please check your tube
Air tubing is blocked. Check the air tubing and remove any blockages. Disconnect the
power cord and then reconnect it to restart the device.
Displays message: Alarm module fault, please contact service provider
General failure of the device and/or
the alarm module. Therapy cannot
be started again.
Contact your service provider immediately.