Technical information
Chapter 5: Maintenance and Troubleshooting 75  ACCU-CHEK Customer Care Service Center 1-800-858-8072
To make sure the display is working 
properly, turn off the meter, then 
press and hold down 
M
M
 to see 
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.
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.
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










