Extracted directly from this unit's own service manual.
Error 1Sample is too small. Problem with the FreeStyle® Lite test strip. Problem with the meter. Very low blood glucose (less than 20 mg/dL).
If you have symptoms such as weakness, sweating, nervousness, headache, or confusion, follow your doctor’s recommendation for treating hypoglycemia. Conduct a control solution test using a new FreeStyle Lite test strip. If the results of the control solution test are within the range printed on the side of your test strip vial, retest using blood and a new FreeStyle Lite test strip. If the retest using control solution does not work or the error persists, call Customer Care.
Error 2Problem with the FreeStyle Lite test strip. Problem with the meter. Very high glucose (above 500 mg/dL). HIGH control solution applied when temperature is too cold. (This applies only to control solution that is labeled as HIGH.)
If you have symptoms such as thirst, fatigue, excess urination, or blurry vision, follow your doctor’s recommendation for treating hyperglycemia. Conduct a control solution test using a new FreeStyle® Lite test strip. If the results of the control solution test are within the range printed on the side of your test strip vial, retest using blood and a new FreeStyle Lite test strip. If the retest using control solution does not work or the error persists, call Customer Care.
Error 3Incorrect test procedure. For example, putting blood on the test strip before inserting the test strip into the meter or applying blood before the blood drop and test strip symbols display. Problem with the FreeStyle Lite test strip. Problem with the meter.
Be sure you see the blood drop and test strip symbols on the display screen before you apply blood or control solution. Conduct a control solution test using a new FreeStyle Lite test strip. If the results of the control solution test are within the range printed on the side of your test strip vial, retest using blood and a new FreeStyle Lite test strip. If the retest using control solution does not work or the error persists, call Customer Care.
Error 4Problem with FreeStyle Lite test strip. Problem with the meter.
Conduct a control solution test using a new test strip. If the results of the control solution test are within the range printed on the side of your test strip vial, retest using blood and a new FreeStyle® Lite test strip. If the retest using control solution does not work or the error persists, call Customer Care.