21
Air plug disconnected.
Insert the plug securely.
Refer to section 3.1.
Arm cuff is applied too loosely.
Apply the arm cuff tighter.
Refer to section 3.1.
Air is leaking from the arm cuff.
Replace the arm cuff with a new 
one.
Refer to section 5.5.
Movement during measurement 
and the arm cuff has not been 
inflated sufficiently.
Repeat measurement. Remain 
still and do not talk during 
measurement.
Refer to section 3.3.
If “E2” appears repeatedly, 
inflate the arm cuff manually 
until it is 30 to 40 mmHg above 
your previous measurement 
result.
Refer to section 3.3.
The arm cuff was inflated 
exceeding the maximum 
allowable pressure, and then 
deflated automatically when 
inflating the arm cuff manually.
Do not touch the arm cuff and/or 
bend the air tube while taking a 
measurement. Do not inflate the 
arm cuff more than necessary.
Refer to section 3.3.
Movement during measurement.
Repeat measurement. Remain 
still and do not talk during 
measurement.
Refer to section 3.3.
Clothing is interfering with the 
arm cuff.
Remove any clothing interfering 
with the arm cuff.
Refer to section 3.1.