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25Troubleshooting
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Other troubleshooting
LCD: Keypad Failure!
One of the keys was held down for more
than 10 seconds or got stuck.
Remove any blockages from the keypad.
LCD: Attention High Temp [42, 43, 44, 45]!
The temperature inside the device is
high.
Ensure the ambient temperature
conditions are within the specified
operating range.
LCD: Internal Battery Use!
The device is using the internal battery. Check if the power cord is properly
connected to the device if you want to
run from mains power.
Press the Alarm mute button to cancel
the alarm.
LCD: External DC Power Use!
The device is powered by an external
battery.
Check if the AC power cord is properly
connected to the device if you want to
run from mains power.
Note: The alarm will be cleared
automatically after one minute.
Problem / possible cause Solution
No display
Power failure. The device stops delivering
air pressure.
Remove the mask or the catheter mount
from the tracheostomy tube until power
is restored.
Power not connected or device is not
switched on.
Ensure the power cord is connected and
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
correctly.
Adjust position of mask and headgear.
Plug(s) missing from access port(s) on
mask.
Replace plug(s).
Pressure required for treatment may
have changed.
See your clinician to adjust the pressure.
There is a large impedance (eg,
antibacterial filter) in the air circuit.
Perfom the Learn Circuit function.
Humidifier control dial set too high,
resulting in accumulation of water in the
air tubing.
Turn humidifier control down and empty
the water from the air tubing.
Problem / possible cause Action
248705 Stellar 100 and 150 User Guide EUR1.book Page 25 Monday, October 21, 2013 10:40 AM