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6. Error Messages and Troubleshooting
Display/
Problem
Possible Cause Solution
appears
The monitor is malfunctioned.
Press the [START/STOP] button
again. If “Er” still appears, contact
customer service. Refer to
section 10.
flashes
Batteries are low.
Replacing all batteries with 2 new
alkaline batteries is
recommended. Refer to sub-
section 2.1.
appears or the
monitor is
turned off
unexpectedly
during a
measurement
Batteries are depleted.
Immediately replace all batteries
with 2 new alkaline batteries.
Refer to sub-section 2.1.
No power.
Nothing
appears on the
display of the
monitor.
Batteries are completely
depleted.
Battery polarities are not
properly aligned.
Check the battery installation for
proper placement. Refer to sub-
section 2.1.
Readings
appear too high
or too low.
Blood pressure varies constantly. Many factors including stress,
time of day, and/or how you apply the wrist cuff, may affect your
blood pressure. Review sub-sections 2.2 - 2.4 and section 3.
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