A&D Life Source UB-525CN Instruction Manual page 8

Symbols
Symbols Function/Meaning
The pressure value did not increase during
inflation.
E
3
The cuff is not applied correctly.
PUL DISPLAY ERROR
E
The pulse is not detected correctly.
E
E
Blood pressure monitor internal error
E
9
E-8
Recommended Action
Apply the cuff correctly, and take another
measurement.
Remove the batteries and press the START
button, and then install the batteries again. If the
error still appears, contact the dealer.