6
、
TROUBLESHOOTING
28
Troubleshooting Guide
Symptom
Probable cause
Solution
Remark
Elapsed time
meter displays,
the green and the
yellow light are
always
bright,
but the oxygen
concentrator
stops
running
immediately and
has continuous
buzzer.
1) Four corns plug-in of
the valve has not been
inserted completely
1)Check
and
connect
the
circuit board to
the valve’s four
corns plug-in.
Repairs
by
qualified
personnel
.
2) Exhaust sound buffer
box jammed.
2) Replace it.
3) Can’t open the valve.
3) Replace it.
4) Failure of the main
electronic control circuit
board.
4) Replace it.
The
nasal
cannula
has
more mirage or
blobs.
1)
It’s
not
ventilate
completely
around
machine, so operating
temperature is too high.
1) Make sure the
machine is at
least 10 cm away
from the walls,
other jam
or
heater.
2) Fan inside the machine
can’t run or running rate
turns slow make the
operating temperature too
high.
2) a. Take out the
winker that locks
the fan.
Repairs
by
qualified
personnel
2) b. Replace it.
3) Temperature of
the
water added in humidifier
bottle is too high.
3) Add cold waterin
bottle.
4) The water added in
humidifier bottle is too
much.
4) Water added
should
between
the maximum and
minimum of the
liquid level.
