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Nexus Meter Error Messages

Message	What It Means	What To Do
E-b	Appears when the batteries cannot provide enough power for a test.	Replace the batteries immediately.
E-U	Appears when a used test strip is inserted.	Repeat with a new test strip.
E-E E-0 E-A E-C	Problem in operation.	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
E-F	Appears when test strip is removed while counting down, or insufficient blood volume.	Review the instructions an repeat test with a new test strip. If the problem persists, please contact GlucoRx Customer Care on 01483 755133 for help.
E-t LOW	Appears when ambient temperature is below system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
E-t High	Appears when ambient temperature is above system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.

Troubleshooting

If the meter does not display a message after inserting a test strip...

Possible Cause	What To Do
Batteries exhausted.	Replace the batteries.
Test strip inserted upside down or incompletely.	Insert the test strip with contact bar end first and facing up.
Defective meter or test strips.	Please contact GlucoRx Customer Care on 01483 755133

If the test does not start after applying sample:

Possible Cause	What To Do
Insufficient blood sample.	Repeat the test using a new test strip with larger volume of blood sample.
Defective test strip.	Repeat the test with a new test strip.
Sample applied after automatic switch-off (3 minutes after last user action).	Repeat the test with a new test strip. Apply sample only when flashing “🌢” appears on the display.
Defective meter.	Please contact GlucoRx Customer Care on 01483 755133.

If the control solution test result is out of range.

Possible Cause	What To Do
Error in performing the test.	Read instructions thoroughly and repeat the test again.
Control solution vial was poorly shaken.	Shake the control solution vigorously and repeat the test again.
Expired or contaminated control solution.	Check the expiry date of your control solution.
Control solution that is too warm or too cold.	Control solution, meter and test strips should be at room temperature (20°C-25°C / 68°F – 77°F) before testing.
Defective test strip.	Repeat the test with a new strip.
Meter malfunction.	Please contact GlucoRx Customer care on 01483 755133.

Results Readings

Appears	When your blood glucose result is
	<1.1mmol/L
Ketone?	≥15mmol/L
	33.3mmol/L

Nexus Blue Meter Error Messages

Message	What It Means	What To Do
E-b	Appears when the batteries cannot provide enough power for a test.	Replace the batteries immediately.
E-U	Appears when a used test strip is inserted.	Repeat with a new test strip.
E-E E-0 E-A E-C	Problem in operation.	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
E-F	Appears when test strip is removed while counting down, or insufficient blood volume.	Review the instructions an repeat test with a new test strip. If the problem persists, please contact GlucoRx Customer Care on 01483 755133 for help.
E-t LOW	Appears when ambient temperature is below system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
E-t High	Appears when ambient temperature is above system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.

Troubleshooting

If the meter does not display a message after inserting a test strip...

Possible Cause	What To Do
Batteries exhausted.	Replace the batteries.
Test strip inserted upside down or incompletely.	Insert the test strip with contact bar end first and facing up.
Defective meter or test strips.	Please contact GlucoRx Customer Care on 01483 755133

If the test does not start after applying sample:

Possible Cause	What To Do
Insufficient blood sample.	Repeat the test using a new test strip with larger volume of blood sample.
Defective test strip.	Repeat the test with a new test strip.
Sample applied after automatic switch-off (3 minutes after last user action).	Repeat the test with a new test strip. Apply sample only when flashing “🌢” appears on the display.
Defective meter.	Please contact GlucoRx Customer Care on 01483 755133.

If the control solution test result is out of range.

Possible Cause	What To Do
Error in performing the test.	Read instructions thoroughly and repeat the test again.
Control solution vial was poorly shaken.	Shake the control solution vigorously and repeat the test again.
Expired or contaminated control solution.	Check the expiry date of your control solution.
Control solution that is too warm or too cold.	Control solution, meter and test strips should be at room temperature (20°C-25°C / 68°F – 77°F) before testing.
Defective test strip.	Repeat the test with a new strip.
Meter malfunction.	Please contact GlucoRx Customer care on 01483 755133.

Results Readings

Appears	When your blood glucose result is
	<1.1mmol/L
Ketone?	≥15mmol/L
	33.3mmol/L

Nexus Mini Ultra Meter Error Messages

Message	What It Means	What To Do
E-b	Appears when the batteries cannot provide enough power for a test.	Replace the batteries immediately.
E-U	Appears when a used test strip is inserted.	Repeat with a new test strip.
E-E E-0 E-A E-C	Problem in operation.	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
E-F	Appears when test strip is removed while counting down, or insufficient blood volume.	Review the instructions an repeat test with a new test strip. If the problem persists, please contact GlucoRx Customer Care on 01483 755133 for help.
E-t LOW	Appears when ambient temperature is below system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
E-t High	Appears when ambient temperature is above system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.

Troubleshooting

If the meter does not display a message after inserting a test strip...

Possible Cause	What To Do
Batteries exhausted.	Replace the batteries.
Test strip inserted upside down or incompletely.	Insert the test strip with contact bar end first and facing up.
Defective meter or test strips.	Please contact GlucoRx Customer Care on 01483 755133

If the test does not start after applying sample:

Possible Cause	What To Do
Insufficient blood sample.	Repeat the test using a new test strip with larger volume of blood sample.
Defective test strip.	Repeat the test with a new test strip.
Sample applied after automatic switch-off (3 minutes after last user action).	Repeat the test with a new test strip. Apply sample only when flashing “🌢” appears on the display.
Defective meter.	Please contact GlucoRx Customer Care on 01483 755133.

If the control solution test result is out of range.

Possible Cause	What To Do
Error in performing the test.	Read instructions thoroughly and repeat the test again.
Control solution vial was poorly shaken.	Shake the control solution vigorously and repeat the test again.
Expired or contaminated control solution.	Check the expiry date of your control solution.
Control solution that is too warm or too cold.	Control solution, meter and test strips should be at room temperature (20°C-25°C / 68°F – 77°F) before testing.
Defective test strip.	Repeat the test with a new strip.
Meter malfunction.	Please contact GlucoRx Customer care on 01483 755133.

Results Readings

Appears	When your blood glucose result is
	<1.1mmol/L
Ketone?	≥15mmol/L
	33.3mmol/L

Nexus Voice Meter Error Messages

Message	What It Means	What To Do
E-b	Appears when the batteries cannot provide enough power for a test.	Replace the batteries immediately.
E-U	Appears when a used test strip is inserted.	Repeat with a new test strip.
E-E E-0 E-A E-C	Problem in operation.	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
E-F	Appears when test strip is removed while counting down, or insufficient blood volume.	Review the instructions an repeat test with a new test strip. If the problem persists, please contact GlucoRx Customer Care on 01483 755133 for help.
E-t LOW	Appears when ambient temperature is below system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
E-t High	Appears when ambient temperature is above system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.

Troubleshooting

If the meter does not display a message after inserting a test strip...

Possible Cause	What To Do
Batteries exhausted.	Replace the batteries.
Test strip inserted upside down or incompletely.	Insert the test strip with contact bar end first and facing up.
Defective meter or test strips.	Please contact GlucoRx Customer Care on 01483 755133

If the test does not start after applying sample:

Possible Cause	What To Do
Insufficient blood sample.	Repeat the test using a new test strip with larger volume of blood sample.
Defective test strip.	Repeat the test with a new test strip.
Sample applied after automatic switch-off (3 minutes after last user action).	Repeat the test with a new test strip. Apply sample only when flashing “🌢” appears on the display.
Defective meter.	Please contact GlucoRx Customer Care on 01483 755133.

If the control solution test result is out of range.

Possible Cause	What To Do
Error in performing the test.	Read instructions thoroughly and repeat the test again.
Control solution vial was poorly shaken.	Shake the control solution vigorously and repeat the test again.
Expired or contaminated control solution.	Check the expiry date of your control solution.
Control solution that is too warm or too cold.	Control solution, meter and test strips should be at room temperature (20°C-25°C / 68°F – 77°F) before testing.
Defective test strip.	Repeat the test with a new strip.
Meter malfunction.	Please contact GlucoRx Customer care on 01483 755133.

Results Readings

Appears	When your blood glucose result is
	<1.1mmol/L
Ketone?	≥15mmol/L
	33.3mmol/L

Nexus Go Meter Error Messages

Message	What It Means	What To Do
E-b	Appears when the batteries cannot provide enough power for a test.	Replace the batteries immediately.
E-U	Appears when a used test strip is inserted.	Repeat with a new test strip.
E-E E-0 E-A E-C	Problem in operation.	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
E-F	Appears when test strip is removed while counting down, or insufficient blood volume.	Review the instructions an repeat test with a new test strip. If the problem persists, please contact GlucoRx Customer Care on 01483 755133 for help.
E-t LOW	Appears when ambient temperature is below system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
E-t High	Appears when ambient temperature is above system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.

Troubleshooting

If the meter does not display a message after inserting a test strip...

Possible Cause	What To Do
Batteries exhausted.	Replace the batteries.
Test strip inserted upside down or incompletely.	Insert the test strip with contact bar end first and facing up.
Defective meter or test strips.	Please contact GlucoRx Customer Care on 01483 755133

If the test does not start after applying sample:

Possible Cause	What To Do
Insufficient blood sample.	Repeat the test using a new test strip with larger volume of blood sample.
Defective test strip.	Repeat the test with a new test strip.
Sample applied after automatic switch-off (3 minutes after last user action).	Repeat the test with a new test strip. Apply sample only when flashing “🌢” appears on the display.
Defective meter.	Please contact GlucoRx Customer Care on 01483 755133.

If the control solution test result is out of range.

Possible Cause	What To Do
Error in performing the test.	Read instructions thoroughly and repeat the test again.
Control solution vial was poorly shaken.	Shake the control solution vigorously and repeat the test again.
Expired or contaminated control solution.	Check the expiry date of your control solution.
Control solution that is too warm or too cold.	Control solution, meter and test strips should be at room temperature (20°C-25°C / 68°F – 77°F) before testing.
Defective test strip.	Repeat the test with a new strip.
Meter malfunction.	Please contact GlucoRx Customer care on 01483 755133.

Results Readings

Appears	When your blood glucose result is
	<1.1mmol/L
Ketone?	≥15mmol/L
	33.3mmol/L

Nexus Q Meter Error Messages

Message	What It Means	What To Do
E-b	Appears when the batteries cannot provide enough power for a test.	Replace the batteries immediately.
E-U	Appears when a used test strip is inserted.	Repeat with a new test strip.
E-E E-0 E-A E-C	Problem in operation.	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
E-F	Appears when test strip is removed while counting down, or insufficient blood volume.	Review the instructions an repeat test with a new test strip. If the problem persists, please contact GlucoRx Customer Care on 01483 755133 for help.
E-t LOW	Appears when ambient temperature is below system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
E-t High	Appears when ambient temperature is above system operation range.	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.

Troubleshooting

If the meter does not display a message after inserting a test strip...

Possible Cause	What To Do
Batteries exhausted.	Replace the batteries.
Test strip inserted upside down or incompletely.	Insert the test strip with contact bar end first and facing up.
Defective meter or test strips.	Please contact GlucoRx Customer Care on 01483 755133

If the test does not start after applying sample:

Possible Cause	What To Do
Insufficient blood sample.	Repeat the test using a new test strip with larger volume of blood sample.
Defective test strip.	Repeat the test with a new test strip.
Sample applied after automatic switch-off (3 minutes after last user action).	Repeat the test with a new test strip. Apply sample only when flashing “🌢” appears on the display.
Defective meter.	Please contact GlucoRx Customer Care on 01483 755133.

If the control solution test result is out of range.

Possible Cause	What To Do
Error in performing the test.	Read instructions thoroughly and repeat the test again.
Control solution vial was poorly shaken.	Shake the control solution vigorously and repeat the test again.
Expired or contaminated control solution.	Check the expiry date of your control solution.
Control solution that is too warm or too cold.	Control solution, meter and test strips should be at room temperature (20°C-25°C / 68°F – 77°F) before testing.
Defective test strip.	Repeat the test with a new strip.
Meter malfunction.	Please contact GlucoRx Customer care on 01483 755133.

Results Readings

Appears	When your blood glucose result is
	<1.1mmol/L
Ketone?	≥15mmol/L
	33.3mmol/L

HCT Meter Error Messages

Message	What It Means	What To Do
E-b	Appears when the batteries are too low.	Replace the batteries immediately.
E-C	Appears when the wrong code strip is inserted or other coding errors.	Check if the code numbers on the display and ketone foil packet are the same. If the problem persists, pxlease contact GlucoRx Customer Care on 01483 755133 for help.
E-2	Expired code strip.	Repeat the test with a new lot of test strip.
E-U	Appears when a used test strip is inserted.	Repeat with a new test strip.
E-t	Appears when ambient temperature is above or below system operation range.	System operation range is 10°C to 40°C(50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
E-0 E-A E-E	Problem with the meter.	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
E-F	Appears when test strip is removed while counting down, or insufficient blood volume.	Review the instructions and repeat test with a new strip. If the problem persists, please contact GlucoRx Customer Care on 01483 755133 for help.

Results Readings (for glucose test)

Message	What it means
	Your blood glucose level is below 0.5mmol/L
KETONE (warning)	Your blood glucose level is 15mmol/L or more
	Your blood glucose level is above 38.9mmol/L

Results Readings (for β-ketone test)

Message	What it means
	Your blood ketone level is below 0.1mmol/L. (please see below ‘Interpretation’ table)
Any result between 0.1 and 8mmol/L (for example 0.6mmol/L)	Your blood ketone level is between 0.1mmol/L and 8mmol/L. (please see below ‘Interpretation’ table)
	Your blood ketone level is above 8mmol/L. (please see below ‘Interpretation’ table)

How to interpret blood Ketone results

Reference: adapted from information provided in ‘The Balance Guide to Meds & Kit’, 2011-2012, p15)

Your ketone reading	Interpretation
Below 0.6mmo/L	This is normal
Between 0.6 and 1.5mmol/L	You may require assistance; contact your Diabetes healthcare team for advice.
Above 1.5mmol/L	Risk of Diabetic ketoacidosis; call your Diabetes healthcare team immediately.

Troubleshooting

1. If the meter does not display a message after inserting a test strip:

Possible Cause	What to do
Batteries exhausted.	Replace the batteries.
Test strip inserted upside down or incompletely.	Insert the test strip with contact bars en first and facing up.
Defective meter or test strips.	Please contact GlucoRx Customer Care on 01483 755133.

2. If the test does not start after applying the sample:

Possible Cause	What to do
Insufficient blood sample.	Repeat the test using a new test strip with larger volume of blood sample.
Defective test strip.	Repeat the test with a new test strip.
Sample applied after automatic switch-off (3 minutes after last user action).	Repeat the test with a new test strip. Apply sample only when flashing “🌢” appears on the display.
Defective meter.	Please contact GlucoRx Customer care on 01483 755133.

3. If the control testing result is out of range:

Possible Cause	What to do
Error in performing the test.	Read instructions thoroughly and repeat the test again.
Control solution vial was poorly shaken.	Shake the control solution vigorously and repeat the test again.
Expired or contaminated control solution.	Check the expiry date of the control solution.
Control solution that is too warm or too cold.	Control solution, meter, and test strips should be at room temperature 20°C to 25°C (68°F to 77&def;F) before testing.
Defective test strip.	Repeat the test with a new test strip.
Meter malfunction.	Please contact GlucoRx Customer Care on 01483 755133.
Improper working of meter and test strip.	Please contact GlucoRx Customer Care on 01483 755133.

Error Type	Error Code	Error Message Display	How to do
Accessory	Err.23	Hardware error	Please contact GlucoRx Customer Care on 01483 755133 for assistance.
Accessory	Err.41	Hardware error	Please contact GlucoRx Customer Care on 01483 755133 for assistance.
Temperature	Err.25	Temperature is too low	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
Temperature	Err.26	Temperature is too high	System operation range is 10°C to 40°C (50°F to 104°F). Repeat the test after the meter and test strip are in the above temperature range.
Strip	Err.24	Strip has been used	Repeat with a new test strip.
Strip	Err.28	Code strip data is incorrect	Please contact GlucoRx Customer Care on 01483 755133 for assistance.
Strip	Err.29	Please re-insert the strip or use another strip	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
Strip	Err.30	Please re-insert the strip or use another strip	Repeat the test with a new test strip. If the meter still does not work, please contact GlucoRx Customer Care on 01483 755133 for assistance.
Measurement	Err.40	Strip is removed during measurement	Repeat the test with a new test strip.
Measurement	Err.45	Operation error	Repeat the test with a new test strip.
Measurement	Err.51	HCT error	Repeat the test with a new test strip.
Measurement	Err.52	No code information	Please insert code card first.
Battery	Err.42	Battery low	Replace the battery immediately.

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Blood Glucose Testing

Blood Ketone Testing

Pen Needles & Lancets

Hypo Treatments

Footcare

Blood Glucose Testing

Blood Ketone Testing

Pen Needles & Lancets

Hypo Treatments

Footcare

Nexus Meter

Nexus Blue Meter

Nexus Mini Ultra Meter

Nexus Voice Meter

Nexus Go Meter

Nexus Q Meter

HCT Meter

HCT Connect Meter

Nexus Meter Error Messages

Troubleshooting

Results Readings

Nexus Blue Meter Error Messages

Troubleshooting

Results Readings

Nexus Mini Ultra Meter Error Messages

Troubleshooting

Results Readings

Nexus Voice Meter Error Messages

Troubleshooting

Results Readings

Nexus Go Meter Error Messages

Troubleshooting

Results Readings

Nexus Q Meter Error Messages

Troubleshooting

Results Readings

HCT Meter Error Messages

Results Readings (for glucose test)

Results Readings (for β-ketone test)

How to interpret blood Ketone results

Troubleshooting

HCT Connect Meter Error Messages

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