MyStar Extra - ~A1 C Result above 10%; ~A1 C Result below 6%

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Error Messages and Troubleshooting
Error A4: ~A1c result below 6%.
[1] Your calculated ~A1c result is below 6%.
Error A5: ~A1c result above 10%.
[1] Your calculated ~A1c result is above 10%.
Call Customer Service at 08000 35 25 25. The phone number is also
printed on your meter label.