Accu-Chek COMPACT PLUS Owner's Booklet page 77

To make sure the display is working
properly, turn off the meter, then
press and hold down
the complete display. All the
sections should be clear and should
look exactly like the display as
shown. If not, call the ACCU-CHEK
Customer Care Service Center at
1-800-858-8072.
This reading may not be
accurate because the test was
performed outside the proper
temperature range for the system;
50 °F to 104 °F. Results are
displayed at temperatures within
41 °F to 113 °F.
Example
Chapter 5: Maintenance and Troubleshooting
M M
to see
75
ACCU-CHEK Customer Care Service Center 1-800-858-8072
The temperature is below or
above the proper range for
the meter, below 41 °F or
above 113 °F. Move to an area
between 50 °F and 104 °F,
wait 30 minutes or more
and repeat the test. Do not
artificially heat or cool the
meter.
This can be shown three
different ways: E20 and the
temperature symbol together,
E20 without the temperature
symbol, or the temperature
symbol without E20.