This error appears when the control solution is too cold to provide an accurate result.
What to do:
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Allow the control solution to reach room temperature (15–30°C / 59–86°F).
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Do not heat the solution manually — just let it sit at room temperature for a few minutes.
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Once warmed, repeat the test using a new strip and the same solution.
If the error continues to appear, contact Customer Support:
www.diabetes.ascensia.com/contact-us