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7. Error Messages and Troubleshooting
In case of any of the below problems occur during measurement, first check that no 
other electrical device is within 12 inches (30 cm). If the problem persists, please 
refer to the table below.
Display/Problem Possible Cause Solution
 
appears or the 
wrist cuff does not 
inflate.
The wrist cuff is not applied 
correctly.
Apply the wrist cuff correctly, 
then take another 
measurement. Refer to 
section 2.4.
Air is leaking from the wrist 
cuff.
Contact customer service. 
Refer to chapter 11.
 
appears
The wrist cuff is overinflated 
exceeding 300 mmHg.
Do not touch the wrist cuff 
while taking a measurement.
 
appears
You move or talk during a 
measurement. Vibrations 
disrupt a measurement.
Remain still and do not talk 
during a measurement.
 
appears
The pulse rate is not detected 
correctly.
Apply the wrist cuff correctly, 
then take another 
measurement. Refer to 
section 2.4.
Remain still and sit correctly 
during a measurement. 
If the “  ” symbol continues 
to appear, we recommend you 
to consult with your physician.
/ 
appears
 
appears