Accu-Chek performa Owner's Booklet page 65

Blood glucose
is below the
defined hypo
(low blood
glucose) level.
code chip number matches the code
number on the test strip container. Make
sure the time and date in the meter are
correct.
The meter is not coded
or the code chip is not
inserted. Turn off the
meter and recode it.
The test strips will
expire at the end of the
current month. Before
the end of the month,
insert a new code chip
from a new box of test
strips and ensure the
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