27
Troubleshooting
En
glish
Other troubleshooting
LCD: FiO
2
sensor disconnected!
The FiO
2
monitoring sensor is not
connected.
Connect the FiO
2
monitoring sensor or
replace it with a new one.
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.
•
Check the power cable connection
between the mains power or external
battery and the device.
•
As the internal battery ages, the
available capacity decreases. When
the remaining battery capacity is low, it
can affect the battery charge level
indication and lead to power failure
without activating Low or Empty
battery alarms. ResMed recommends
the battery be tested after two years
to assess the remaining battery life
(see “Internal battery” on page 3).
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.
Problem / possible cause
Action
