Section 9: General Troubleshooting
LED indicator
Normal
Operation
Four solid green
LEDs
Three solid
green LEDs
Two solid green
LEDs
One solid green
LEDs
Green LEDs
flashing
Error Codes
Yellow and
green LEDs
alternate flashing
Yellow LED
flashing (rapidly)
Possible Cause
Greater than 90%
capacity remaining
65% - 90%
capacity remaining
40% - 65%
capacity remaining
10% - 40%
capacity remaining
Battery is charging
Battery has
entered over-
discharge
protection to
prevent damage to
the cells.
Incorrect A/C
adapter being used
Power source is
damaged
22
Solution
Contact Medistrom
technical support
Pilot-24: use the A/C
adapter provided with
your ResMed S9 or
ResMed AirSense 10
Pilot-12: use the A/C
adapter that was
included with the Pilot-
12
Power strip or outlet
wiring may be
damaged. Plug A/C
adapter directly into
wall outlet or try using
the battery with a
different wall outlet.