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14.1 General troubleshooting:
Trouble
Cause
Solution
Air is leaking from
around my mask.
Mask may be fitted incorrectly;
The size of the mask is not
suitable.
Ensure your mask is fitted correctly;
See your mask user guide to check your
mask fit and seal;
Please refer to the nose measurement
card to choose the appropriate mask size.
I am getting a dry or
blocked nose.
Humidity level may set too low;
For the blocked nose:
History of nasal disease;
The pressure parameter may
be set improperly.
Adjust the humidity level;
Use after treatment by a doctor;
Adjust the pressure parameter.
I am getting droplets
of water on my nose,
in the mask and
heated tubing.
The humidity level may be set
too high;
Condensation forms in the
piping mask due to cold
weather.
Adjust the humidity level;
Open the heated tubing to solve
condensation.
My mouth is very dry
and uncomfortable.
Air may be escape from your
mouth;
The humidity level is not on or
may be set too low.
You may need a chin strap to keep your
mouth closed or a full face mask;
Increase the humidity level.
Air pressure in my
mask seems too
high (it feels like I am
getting too much air).
Ramp may be turned off;
The pressure parameter may
be set too high.
Enable your ramp option;
Decrease the pressure.
Air pressure in my
mask seems too low
(it feels like I am not
getting enough air).
Ramp may be in progress;
The pressure parameter may
be set too low.
Start your therapy after the setting
pressure reached or turn ramp time off;
Increase the pressure.
My screen is black.
After therapy start, the screen
backlight went off;
In other case, the power do not
connect firmly.
Press dial to turn on the screen light;
Check the connection of power, ensure it
connect with device firmly.
My water tank is
leaking.
Water tank assemble
incorrectly or it is broken.
Check the water assemble correctly;
Contact your provider or Yuwell if your
water tank is broken.
The heated tubing
does not work.
The heated tubing is not
properly connected;
The function of the heated
tubing is not enabled;
The heated tubing is broken.
Checking the connection of the heated
tubing, when the connection is successful,
the icon will be shown in the therapy
page;
Enable the heated tubing function in the
setting page;
Or contact your provider or Yuwell.
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14.2 Other trouble:
Message in LCD Meaning of error
Solution
ERROR 1
There is a mistake of pressure sensor
Please contact your provider or Yuwell
ERROR 2
There is a mistake of flow sensor
Please repower your device or contact
your provider or Yuwell
ERROR 3
There is a mistake of temperature
sensor
Please contact your provider or Yuwell
ERROR 4
Functional safety detection is abnormal Please contact your provider or Yuwell
ERROR 5
There is a parameter out of the
corresponding range
Please repower the device or contact
your provider or Yuwell
ERROR 6
The pressure is out of range
Replace the filter with a new one or
repower the device or contact your
provider or Yuwell
ERROR 7
It is failed to supply power to the
humidifier
Please contact your provider or Yuwell
ERROR 8
There is a mistake of blower
Please contact your provider or Yuwell
ERROR 9
There is a mistake of RTC ( loss power ) Please adjust the time of the device or
contact your provider or Yuwell
15. Specification of technology
Items
Specifies
Power
Input :100-240VAC, 50-60Hz, 2Amax
Output:24V DC, 5A
Heated tubing
Power supply connection: 0-24VDC, 2A (max)
Connection port output: 0-24VDC, 2A (max)
Summary of Contents for YH-480A
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