31
VER: A001 202203
Troubleshooting
SYMBOLS/SYMPTOMS
CONDITIONS/CAUSES
INDICATION/
CORRECTION
Unit does not turn on when
button is pushed.
Worn-out batteries.
Replace them with 4 new
AA (LR6) alkaline
batteries.
Battery polarities have been
positioned incorrectly.
Re-insert the batteries in
the correct positions.
Measuring Error Symbol
appears when blood
pressure value displayed is
excessively low or high.
Cuff has been placed
incorrectly.
Wrap the cuff properly so
that it is positioned
correctly.
Did you talk or move during
measurement?
Measure again. Keep arm
steady during
measurement.
Shaking of the arm with the
cuff on.
Measuring Error Symbol
Air circuit abnormality. Cuff
tube may not be plugged into
monitor correctly.
Check cuff connection.
Measure again.
Measuring Error Symbol
Inflation pressure exceeding
300 mmHg.
Switch the unit off, then
measure again.
Measuring Error Symbol
Can’t determine blood
pressure measurement data.
Wrap the cuff properly
and keep steady. Measure
again.
Measuring Error Symbol
If HL858DM cannot be
connected to paired
Bluetooth-enabled device over
45 seconds, LCD will display
Error message “E4” and
Bluetooth will be turned off.
Please press
button for
one time to start Bluetooth
function.
Measuring Error Symbol
Finger hasn’t be placed on
Advanced IHB detection area.
Keep finger gently place and
well-covered on Advanced
IHB detection area and
measure again.
Finger moved away from the
detection area when the
measurement has not been
completed yet.
Measure again and don’t
move away your finger
before measurement
completed.
Measuring Error Symbol
Finger press too hard on
Advanced IHB detection area.
Measure again. Gently place
finger on Advanced IHB
detection area.
Cold Finger and weak pulse
signals Can’t determine
Advanced IHB measurement
data.
Measure again. Keep finger
warm and gently place on
Advanced IHB detection
area.
Measuring Error Symbol
Pulse signals could not be
detected
continuously by the
Advanced IHB detection area for
a period.
Place the finger on Advanced
IHB detection area and keep
steady. Measure again.
Note: If "EP" appears on the display, just return the device to your local distributor or
importer.