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TROUBLESHOOTING
TROUBLESHOOTING
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Problem Possible Cause Solution
No display. Power not connected or
switch at back is not on.
Ensure the power cable is
connected and that the
switch at the back of the
unit is in the ON position.
Insufficient air delivered
from the ResMed S7
Lightweight.
Ramp Time is in use. Wait for air pressure to
build up.
Air filter is dirty. Replace air filter.
Air tubing is kinked or
punctured.
Straighten or replace
tubing.
Air tubing not connected
properly.
Check air tubing.
Mask and headgear not
positioned correctly.
Adjust position of mask and
headgear.
Cap(s) missing from access
port(s) on mask.
Replace cap(s).
Altitude compensation
setting is incorrect.
Adjust altitude
compensation setting to the
correct altitude range.
Pressure required for
treatment may have
changed.
See your clinician to adjust
the pressure.
Excessive air delivered from
the ResMed S7 Lightweight.
Altitude compensation
setting is incorrect.
Adjust altitude
compensation setting to the
correct altitude range.
Displays error message:
Exx
(where xx defines an error
code)
Component failure. Return your ResMed S7
Lightweight for servicing.
308133r1.book Page 21 Thursday, March 27, 2003 3:17 PM