Display gone out
Acoustic signal for at
least 120 seconds, no
display.
High priority
No power supply and
internal battery is
discharged
Check power cord is firmly
connected. If necessary, check
the function of the socket by
connecting a different device
(e.g. a lamp).
Connect device to a power
socket and charge internal
battery
Device defective Have device repaired
Fault in tube system
Medium priority
Exhalation tube not
connected
Check tube system and
replace patient circuit if
required
Incorrect patient circuit
connected
The patient circuit
selected in the menu
does not correspond to
the patient circuit
connected
Change patient circuit or have
settings corrected by
physician supervising
treatment
Device defective Have device repaired
Control pressure
high
High priority
The patient circuit
selected in the menu
does not correspond to
the patient circuit
connected
Change patient circuit or have
settings corrected by doctor
supervising treatment
Valve control tube and
pressure measuring tube
the wrong way round
Check tube system
Control pressure
low
High priority
The valve control tube
between the device and
the patient valve is
incorrectly connected
Check valve control tube for
damage, replace patient
circuit if necessary
Connect valve control tube
Valve control tube and
pressure measuring tube
the wrong way round
Check tube system
The patient circuit
selected in the menu
does not correspond to
the patient circuit
connected.
Change the patient circuit or
have settings corrected by
doctor supervising treatment
Display Alarm Cause of fault Remedy
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