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27The Alarms
Warning Signal Cause Action
The flow generator stops
delivering air pressure.
Sound: Two alternating
continuous tones
LCD: LCD turns off
LED: Red flashing
Alarm: Power fail
• Power failure.
• Power cord is
disconnected or
VPAP III ST-A
switched off while
delivering
treatment (without
pressing the Start/
Stop key).
Alarm will stop:
when the Alarm Mute key is pressed,
or
after two minutes,
or
when power is restored.
The flow generator stops
delivering air pressure.
Sound: Single
intermittent tone
LCD: CHECK TUBE
LED: Yellow flashing
Alarm: System fault
• Air tubing
disconnected from
the HumidAire 2i/
2iC.
• Hardware failure.
1. Check that the air tubing is
connected properly to the
HumidAire 2i/2iC.
2. Check that the HumidAire 2i/2iC or
front cover is connected properly to
the flow generator.
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.
The flow generator stops
delivering air pressure.
Sound: Single
intermittent tone
LCD: PRESSURE ERROR!
LED: Yellow flashing
Alarm: Over pressure
Treatment pressure
delivered above a set
level.
• Return the VPAP III ST-A for
servicing.
• DO NOT USE THE VPAP III ST-A
DEVICE.
Sound: Single
intermittent tone
LCD: IPAP LOWER
ALARM
LED: Yellow flashing
Alarm: Over use
VPAP III ST-A is
operating outside
device specifications.
Continue using and contact your
clinician about this alarm. Device
settings may require adjustment.
The flow generator stops
delivering air pressure.
Sound: Single
intermittent tone
LCD: SENSOR ERROR!
LED: Yellow flashing
Alarm: System Error
Hardware error. • Return the VPAP III ST-A for
servicing.
• DO NOT USE THE VPAP III ST-A
DEVICE.