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The flow generator stops
delivering air pressure.
Sound: Single
intermittent tone
LCD: SYSTEM ERROR
Call service!
LED: Yellow flashing
Alarm: System Error
Component failure. • Return the VPAP III ST-A for
servicing.
• DO NOT USE THE VPAP III ST-A
DEVICE.
Sound: Single
intermittent tone
LCD: HIGH LEAK!!!
LED: Yellow flashing
Alarm: Mask off
High mask leak for
more than 20
seconds.
Adjust the mask to minimize leak. See
“Using the Mask-Fitting Feature” on
page 12.
Sound: Single
intermittent tone
LCD: LOW PRES ALARM
LED: Yellow flashing
Alarm: Low mask
pressure
• Air pressure at the
mask has fallen
below the alarm
setting level.
• Mask is removed
while SmartStop
has been disabled.
• Excessive mask
leak.
1. Reposition your mask and check it
for a source of leaks.
2. Check that the air tubing is
connected properly.
3. Turn the VPAP III ST-A off and on
again at the power switch. If the
alarm persists, return the unit to
ResMed for servicing.
Sound: Single
intermittent tone
LCD: HIGH PRES ALARM
LED: Yellow flashing
Alarm: High mask
pressure
Mask pressure
exceeds alarm setting
level.
1. Turn power off.
2. Turn power back on.
3. Try using the flow generator one
more time.
4. If the high pressure alarm activates
repeatedly, discontinue use and
return to ResMed for servicing. If
the alarm does not recur, then
continue to use as normal.
Warning Signal Cause Action