Q: What does the error Er 2 mean on the MICROLIFE NC 200 thermometer?

The error Er 2 means that the thermometer is placed too close to your forehead . The MICROLIFE NC 200 requires a precise distance to function correctly. Solution Hold the thermometer at a distance of 1 to 5 centimeters from your forehead: Move the device away if Er 2 continues to display Ensure you are holding it vertically facing the forehead Once the correct distance is found, the thermometer will automatically start measuring A long beep indicates the end of the measurement. If the error message persists after increasing the distance, contact customer service.

Question 1

What does the error Er 2 mean on the MICROLIFE NC 200 thermometer?

Accepted Answer

The error Er 2 means that the thermometer is placed too close to your forehead. The MICROLIFE NC 200 requires a precise distance to function correctly.

Solution

Hold the thermometer at a distance of 1 to 5 centimeters from your forehead:

Move the device away if Er 2 continues to display
Ensure you are holding it vertically facing the forehead
Once the correct distance is found, the thermometer will automatically start measuring

A long beep indicates the end of the measurement. If the error message persists after increasing the distance, contact customer service.

Question 2

The blue light keeps flashing permanently, I cannot take a measurement with my MICROLIFE NC 200 thermometer

Accepted Answer

The flashing blue light is a normal behavior of the MICROLIFE NC 200 – it indicates that the device is ready for a measurement. However, if it continues to flash indefinitely and you cannot take a measurement, here are some points to check:

Correct Distance

The thermometer must be positioned 1-5 cm from the forehead, with the infrared sensor pointed towards the center of the forehead. If you are too close (less than 1 cm), you will get an error Er 2. After finding the correct distance, the device will trigger automatically and the green light will turn on to start the countdown (3, 2, 1).

Battery Status

Check that the 2 AAA 1.5V batteries are not weak or depleted. A device with insufficient batteries may remain stuck in the ready state. Replace both batteries with new ones if necessary.

Cleaning the Infrared Sensor

A dirty or stained infrared sensor may prevent the device from correctly detecting distance and temperature. Gently clean the sensor lens with a soft cloth dampened with 70% isopropyl alcohol. Never immerse the device in water.

Ambient Temperature

The device only works within a correct ambient temperature range. If you see AL (too cold, below 15°C) or AH (too hot, above 40°C), wait for the ambient temperature to normalize before measuring.

Resetting the Device

If the problem persists despite these checks, press and hold the START/IO button for 3 seconds to completely turn off the device. Wait a few seconds and then turn it back on. If you receive an error Er 0 or Er 6 (system malfunction), the device requires repair or replacement.

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