4
How to solve device problems
4-2
KnightStar 330
User’s Manual
Y-500009-00 Rev. J (6/06)
Table 4-1 lists some possible problems and ways to correct
them.
Table 4-1: Troubleshooting checklist
Problem
Indicators
Possible Cause
Corrective Action
No airflow
out of device
No alarm
or
displayed
symbol.
1. Internal elec-
tronic failure.
2. Corrupted
prescription
settings.
1. Contact your home
care provider for
repair.
2. Contact your home
care provider.
Low airflow
out of device
No alarm
or
displayed
symbol.
1. Delay feature
activated.
2. Blocked
device air
inlet.
3. Internal elec-
tronic prob-
lem.
1. De-activate the
delay feature.
2. Move rear of device
away from the wall
and all objects.
3. Contact your home
care provider for
repair.
Power loss
Display is
blank. Red
LED flashes
and alarm
sounds. No
green
LED.
1. Faulty power
cord connec-
tion.
2. Wall outlet
power failure.
1. Check power cord
connections at back
of device and wall
outlet.
2. Verify AC power is
available at wall out-
let. If not, connect
external battery.
Ensure
green
LED
on top of device is
illuminated.
Overpressure
Alarm and
flashing
red
LED.
Displayed
symbol is
55.
Internal electronic
problem.
Disconnect power for at
least 30 seconds; then
reconnect to power
source. If condition
persists, contact your
home care provider for
repair.
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