4. Error Messages and Troubleshooting
26
Air plug is disconnected.
Insert the air 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 6.1.
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.
Device error.
Contact your OMRON retail outlet or 
distributor.
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