Акку-Чек Перформа Нано - Manual (Page 65)

Screen Messages and Troubleshooting
Never make treatment decisions based on an error message. If you
have any concerns, call Roche.
The meter will not turn on or the display is blank.
Batteries are dead – •
Insert new batteries
Display is damaged –
•
Call Roche
Meter is defective –
•
Call Roche
Extreme temperatures –
•
Move the meter to a more temperate area
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