of 5031
malfunction
Error 34 Microprocessor
malfunction
Replace main PCB (ref. sec. 5.1)
Wrong Pressure
calibration
Repeat occlusion pressure calibration
procedure. If persists, replace pressure
sensor.
Error 35
Pressure sensor
malfunction
Replace pressure sensor per instructions.
(ref. sec. 3)
Error 39 Microprocessor
malfunction or software
code corrupted
Burn software again - if an error occurs
during or after burning the software, replace
main PCB (ref. sec. 5.1)
Dirty air sensor surface Clean air sensor surface
Scratches on the air
sensor surface
Replace air sensor per instructions.
(ref. secs. 4.1 and 4.2)
Air sensor malfunction Perform air sensor test at Technician Menu,
under Manual Test - air sensor
Air in Line
alarms
Main PCB malfunction
(Door or front sensor)
Perform air sensor test If persists, replace
door air sensor. If persists, replace main
PCB.
The door magnet has
fallen out
Install a door magnet (ref. sec. 2.3)
The door does not close
properly
Clear or adjust the door mechanism
(ref. sec. 2.4)
Door open
alarm
The reed switch has
malfunctioned
Replace the Main PCB. (ref. sec. 5.1)
The operation LED is
turned off (Change Set-
Up)
Enter Change Set-Up and switch LED to
“On”
Operation LED
is not working
Operation LED
malfunction
Change the main PCB (ref. sec. 5.1)
Battery life
limited
Battery weak/damaged Perform battery test described in
Operational Checklist and Performance
Acceptance
Unable to set
higher flow rate
The maximal rate has
been capped in ‘Change
Set up’
Change the maximal rate to higher limit in
‘Change Set Up’
The charging
LED does not
illuminate when
the charger is
AC plug is not securely
inserted into the charger
socket or mains.
Press power plug firmly into the charger
socket and AC plug.
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