TROubLESHOOTiNG
WaRNiNG
Electric Shock Hazard - Do not remove the device cabinet; there are no user-serviceable internal components. The
cabinet should only be removed by a qualified DeVilbiss provider.
issue
Nothing shows on
the display.
The SleepCube
does not start when
breathing into the
mask.
The airflow has
stopped
unexpectedly
during use or
reports mask leak.
The display shows
a device fault.
Apnea symptoms
have recurred.
Skin becomes
irritated where
mask contacts face.
Dryness of throat or
nose.
Water condensation
collecting in the
hose causing a
gurgling sound.
EN - 12
possible Cause
1. Device is not plugged in or the power cord
is not fully inserted.
2. Optional Humidifier-The flow generator is
not fully seated on humidifier cradle.
3. There is no outlet power.
1. The Auto-ON feature has been disabled.
2. There is no power to the device.
3. Breath is not deep enough for the Auto-ON
feature to detect.
4. You are using a full face mask that has an
anti-asphyxia valve.
5. The air supply port plug is missing or not
fully inserted.
6. The humidifier chamber is not fully engaged
into the cradle or is missing.
1. The Auto-OFF feature has detected large
airflow because of loosely fitting mask.
2. During use, your mouth opens and you
begin to mouth-breathe.
3. The optional humidifier chamber is not fully
engaged or is missing.
4. The air supply port plug is missing from the
back of the CPAP or is not fully inserted.
An error has occurred in the device and
requires servicing.
1. Air filter may be dirty.
2. Apnea condition has changed.
1. Headgear is too tight or improperly
adjusted.
2. Your mask may not be sized properly or is
not the most appropriate shape for you.
Inadequate humidity.
1. Humidification is too high.
2. Room temperature fluctuates from higher to
lower levels through the night.
Remedy
1a. Verify that power cord is firmly connected to
the SleepCube and the power outlet.
1b. If you are using a DC power source, make
sure the cable connections are secure. Verify that
battery is charged.
2. Refer to assembly instructions (Fig. 1-7).
3. Locate a suitable functioning power source.
1. Use the ON/OFF button to start and stop
device.
2. Verify that the power cord is firmly connected to
the device and the power outlet.
3. Breathe deeply in and out to start the device.
4. Auto-ON may not work because your exhaled
breath escapes through the open valve. Use the
ON/OFF button to start and stop the device.
5. Make sure the air supply port plug is fully
inserted into the unit.
6. Slide the humidifier chamber fully into the slot.
Verify the latching lever snaps into place.
1. Ensure you have a good mask fit; adjust mask
and headgear.
2. Contact equipment provider for a chin strap or
different mask to prevent mouth-breathing.
3. Slide the humidifier chamber fully into cradle.
Verify the release latch clicks into place.
4. Ensure the air supply port plug is fully inserted
into the back of the CPAP.
Contact your equipment provider for service.
1. Clean or replace the air filter and relocate
device away from drapes or other dusty surfaces.
2. Contact your physician or equipment provider.
1. Loosen headgear to reduce contact pressure
on face.
2. Contact physician or equipment provider.
1a. Add a DeVilbiss DV5 heated humidifier.
1b. Increase the heater setting on the humidifier.
1. Reduce humidifier heater setting.
2. Increase room temperature.
SE-DV56-1