The meter was unable to pair with a mobile device. 

Retry the pairing.

The batteries are almost out of power. 

Change the batteries now. If the symbol reappears after the batteries have been replaced, remove the batteries again, press and hold either meter button for at least 2 seconds, then reinsert the batteries.

The test strip may be damaged, not properly inserted, or was previously used.

Remove and reinsert the test strip, or replace it if damaged or previously used.

A meter or test strip error has occurred.

This error message could appear if the cap on the test strip container was not closed tightly. The test strips may have been damaged due to improper storage or handling.

Never make therapy decisions based on an error message.

Repeat the blood glucose test. If a second E-3 error message appears, perform a control test with the control solution and a new test strip. See the Performing a Control Test section in the chapter Control Tests within the user manual. If you continue to receive an E-3 error message, use an alternate method for testing your blood glucose, such as a back-up meter and test strip. If the alternate method gives an extremely high blood glucose result, or if an alternate method is not available, contact your healthcare professional immediately.

In rare cases, an E-3 error message may indicate that your blood glucose is extremely high and above the system’s measuring range. See the Unusual Blood Glucose Results section in the chapter Blood Glucose Tests for other possible causes of the error message.

Not enough blood or control solution was drawn into the test strip for measurement or was applied after the test had started.

Discard the test strip and repeat the blood glucose or control test.

Blood or control solution was applied to the test strip before the flashing drop symbol appeared on the display.

Discard the test strip and repeat the blood glucose or control test.

An electronic error occurred. Remove the batteries, press and hold either meter button for at least 2 seconds, then release the button and wait for at least 20 seconds before reinserting the batteries.

Perform a blood glucose or control test.

The temperature is above or below the proper range for the system.

Refer to the test strip package insert for system operating conditions. Move to an area with the appropriate conditions and repeat the blood glucose or control test. Do not artificially heat or cool the meter.

The time and date setting may be incorrect.

A flashing wireless symbol appears while the meter attempts to synchronise the time and date with the paired device. When the wireless symbol no longer appears, press the Up button to turn the meter off. Press the Up button a second time until the flashing test strip symbol appears. If time and date sync was not successful the meter prompts you to set them the next time you turn it on. See the Setting the Time and Date section in the chapter Your New System within the user manual.

The test strip may be damaged.

Repeat the blood glucose or control test with a new test strip.