ResMed Stellar 150, Stellar 100 and 150 manual Other troubleshooting

Problem / possible cause	Action
LCD: External DC Power Use!
The device is powered by an external	Check if the AC power cord is properly
battery.	connected to the device if you want to
	run from mains power.
	Note: The alarm will be cleared
	automatically after one minute.

Other troubleshooting

Problem / possible cause	Solution
No display
Power failure. The device stops delivering	Remove the mask or the catheter mount
air pressure.	from the tracheostomy tube until power
	is restored.
Power not connected or device is not	Ensure the power cord is connected and
switched on.	press the switch at the back of the device
	once.
Treatment pressure seems low
Ramp time is in use.	Wait for air pressure to build up.
Air filter is dirty.	Replace air filter.
Air tubing is kinked or punctured.	Straighten or replace tubing.
Air tubing is not connected properly.	Connect the air tubing firmly at both
	ends.
Mask and headgear not positioned	Adjust position of mask and headgear.
correctly.
Plug(s) missing from access port(s) on	Replace plug(s).
mask.
Pressure required for treatment may	See your clinician to adjust the pressure.
have changed.
There is a large impedance (eg,	Perfom the Learn Circuit function.
antibacterial filter) in the air circuit.
Humidifier control dial set too high,	Turn humidifier control down and empty
resulting in accumulation of water in the	the water from the air tubing.
air tubing.
Treatment pressure seems high
Pressure required for treatment may	Consult your clinician.
have changed.
There is a change in the impedance in the	Perform the Learn Circuit function.
circuit configuration.
The device does not start when you breathe into the mask
SmartStart/Stop not on.	Consult your clinician.
Breath is not deep enough to trigger	Take a deep breath in and out through the
SmartStart.	mask.
There is excessive leak.	Adjust position of mask and headgear.
Plug(s) missing from port(s) on mask.	Replace plug(s).
Air tubing is not connected properly.	Connect firmly at both ends.
Air tubing is kinked or punctured.	Straighten or replace tubing.

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Troubleshooting 25