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20 GoodKnight 420G - Patient Manual
PROBLEM PROBABLE CAUSE SUGGESTION
Recurrence of the first
symptoms of sleep
apnea syndrome.
The GoodKnight 420G is
not set to the correct
pressure or is not operating
correctly.
Your physical condition or
your pressure needs have
changed.
Ask your home care provider to check the
operation of the GK420G.
Contact the ordering physician.
The GoodKnight 420G
does not come on (no
display).
Verify that the power
supply module is properly
connected.
No AC power.
The fuse of the device has
blown.
Check the connections between the power
supply module, the GK420G and the electric
outlet.
Use another appliance, such as a lamp or radio
to check that the AC power supply is present at
the outlet.
Contact your home care provider to get
information on the way of returning the device
to the technical department.
The GoodKnight 420G
is not running properly
and seems to be subject
to interference.
Excessive electro-magnetic
interference.
Move the device away from sources of
interference such as halogen lamps and cell
phones, etc.
9:33 is displayed.
(value given as a guide only)
The appliance is connected
to the mains and remains
on standby.
This message disappears if you press the
ON/OFF button. (See reference 4 in Figure 2,
page 5).
4.0 cmH
2
O is
displayed.
(value given as a guide only)
Set pressure level
(equivalent to the pressure
in the mask for a hose of
1.80 m).
This pressure level has been prescribed by your
doctor; it can only be altered by medical
prescription.
If the ramp function is active, this level of
pressure will increase progressively before
reaching the prescribed value and the ramp
indicator is displayed.
In 01
is displayed.
The mask is disconnected. Check the connections between the mask, the
hose and the device. This message disappears
as soon as the mask is well connected.
In 03
is displayed.
Reduction of the power
supply voltage.
Check the connections between the power
supply module, the GK420G and the mains
socket. Unplug the power supply module, then
connect it again to the mains. If the problem
remains, contact the home care provider.
Check the external battery and replace it, if
necessary. If the problem remains, contact the
home care provider.
Er XX
appears on the
display.
(XX = 2 digits).
The device has detected an
operating fault.
Contact the home care provider.