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TROUBLESHOOTING
NOTE–Your DeVilbiss AutoAdjust LT nasal CPAP system contains no user-serviceable parts. If you believe your unit is not working properly, BEFORE YOU RETURN IT TO
THE HOME MEDICAL EQUIPMENT PROVIDER WHERE YOU PURCHASED IT OR TO SUNRISE MEDICAL, please take a few moments to check for these possible causes:
Symptoms
Unit does not turn on.
No air flow emitted from flow generator when power is turned on,
motor runs.
Symptoms of OSA have recurred.
Skin becomes irritated where mask touches skin.
Dryness of throat or nose.
Air from flow generator seems warm.
Nasal, sinus, ear pain, or runny nose.
Yellow light on back panel of unit is activated.
Aroused from sleep by a sudden drop in pressure followed by a sud-
den rise.
BASE UNIT
Possible Causes
1. Unit not connected to a live power source.
2. Power cord not attached properly.
1. Air filter may be occluded by dirt or
bed clothing.
1. Air filter may be occluded.
2. Incorrect air pressure setting.
3. Sleep apnea condition has changed.
1. Headgear is too tight.
2. Incorrect mask size.
3. Allergic reaction to the mask material.
4. Worn mask.
1. Inadequate room humidity.
2. Room temperature too high.
1. Air filter may be occluded.
2. Air filter and/or outlet port may
be obstructed.
3. Unit located too close to a heating vent or radiator.
1. Reaction to air flow pressure, sinus infection,
or nasal congestion.
1. Internal component failure.
1. Device measured an extremely high leak level in the mask.
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Remedies
1. Plug unit into a live receptacle.
2. Firmly attach power cord.
1a. Clean or replace the air filter.
1b. Move unit away from loose material.
1. Clean or replace the air filter and relocate
unit away from drapes, etc.
2. Contact your Sunrise Medical provider or
authorized service center.
3. Call your physician; you may need to
be retested.
1. Loosen the headgear.
2. Contact your Sunrise Medical provider.
3. Call your physician.
4. Replace mask.
1. Increase room humidity or add a
CPAP humidifier; see page 6.
2. Decrease room temperature.
1. Clean or replace the air filter.
2. Move the unit away from obstruction.
3. Move the unit away from heat source.
1. Discontinue use. Contact your physician.
1. Contact your Sunrise Medical provider or
authorized service center.
1. Readjust mask to seal leak or replace old, worn mask with a new
one.
ResMed Inc. Exhibit 1029
Page 17 of 24
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