Omron R3 Instruction Manual page 15

4. Troubleshooting and Maintenance
Error Display
Cuff is over inflated.
Movement during measurement.
An Er mark with a code/number
indicates the device has a hardware
failure.
Note:
The irregular heartbeat symbol (
Cause
) may also be displayed with error messages.
Remedy
Carefully read and repeat the steps
listed under section 3.3.
Consult your OMRON retail outlet or
distributor.
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