7. Error Messages and Troubleshooting
33
 
appears
The arm cuff is inflated 
exceeding the maximum 
allowable pressure.
Do not touch the arm cuff 
and/or bend the air tube 
while taking a 
measurement.
If inflating the arm cuff 
manually, refer to the end 
of sub-section 3.1.
 
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 arm cuff 
correctly, then take 
another measurement. 
Refer to sub-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
 
does not flash 
during a 
measurement
 
appears
The monitor has 
malfunctioned.
Press the [START/STOP] 
button again. If “Er” still 
appears, contact 
customer service. Refer 
to section 12.
Display/
Problem
Possible Cause Solution