I constantly am getting POS error on my Thermoscan. Have followed instructions in manual... new lens filter, reset device, even changed to fresh batteries. It worked fine till this morning and now will not.

If error persists reset the thermometer by removing the batteries and putting them back in. If error still persists contact your Welch Allyn representative. To change default temperature scale: With the device off, press and hold the button for about 5 seconds. Release the button when desired scale is shown.

If your Braun Thermoscan 6022 thermometer is not switching on even after you have replaced the batteries, there could be a few possible causes:

1. Battery installation: Make sure that you have inserted the batteries correctly, with the correct polarity. Check the battery contacts for any corrosion or debris and clean them if necessary.
2. Battery type: The Braun Thermoscan 6022 requires two AA alkaline batteries. If you have used a different type of battery, such as rechargeable batteries, this could be the reason why the thermometer is not turning on.
3. Battery life: Even if the batteries are new, they could be defective or may have run out of charge quickly. Try replacing the batteries with a fresh set of AA alkaline batteries.
4. Reset: Try resetting the thermometer by removing the batteries for at least one minute and then reinserting them. This can sometimes help to reset the internal electronics of the thermometer.
5. Faulty thermometer: If none of the above steps work, it is possible that the thermometer itself is faulty. In this case, you may need to contact Braun customer support for further assistance or consider purchasing a new thermometer.

It's probable that it needs a new lens filter or the filter needs cleaning. I have no idea how to remove the filter but it probably clips or screws off the bit that goes in the ear.
Quite frankly the device is at best unreliable, it measures infra-red in the ear, great in theory but not very reliable in practice. I would use a different thermometer.

this is manual for 6022.. Braun Shaver Owner Manual ManualsOnline com

This message covers a wide range of problems and when it does appear, the camera locks up until you turn the camera on and off again. But this error indicates a problem(s) ranging from poor / dirty mating electrical contacts between camera body & lens (this inhibits communications between the two); to a shutter malfunction. It is pretty common for it to be dirty contacts on the lens mount opening on the camera body or on the lens itself. When this is the cause of the error, it is almost always fixed with a good deep cleaning. But it can also be more serious, so it doesn't hurt to contact Nikon if you are worried.

Try these suggestions from Nikon first:

• Remove all accessories from the camera.
• Install a freshly charged battery into the camera.
• If your Nikon camera offers resets such as the two-button reset or a hardware reset please follow those instructions provided in the product manual.

Grab a copy of the manual here. Good luck!

I have the same LO error msg. too... and it continues even though i followed the manual instructions.

How to use Braun ThermoScan 1. Always make sure a new, clean lens filter is in place to help ensure an accurate reading. The thermometer will not function without a lens filter attached (see Changing the lens filter). 2. Press the /mem button. The LCD (liquid crystal display) is activated, showing all segments. When the ready symbol is displayed the thermometer is ready for use. 6 To help ensure an accurate temperature reading, use the following technique: If you are right handed, hold the thermometer in the right hand and take the temperature in the right ear. If you are left handed, hold it in the left hand and use the left ear. 3. Perform an ear tug to straighten the ear canal. This gives the thermometer a clear view of the eardrum. Children under 1 year: Pull the ear straight back. Children aged 1 year to adult: Pull the ear up and back. An ear tug is best performed by using your free hand to grasp the outer edge of the top half of the ear. To take your own temperature, wrap your free hand around the back of your head and grab your ear from behind. 4. While tugging the ear, fit the probe snugly into the ear canal as far as possible and press the activation button. Release it when you hear a beep. This is the Temp Beep that confirms the end of measurement. 5. Remove the thermometer from the ear canal. The LCD displays the temperature measured. 6. Replace the lens filter after each measurement: press the ejector button and put on a new, clean lens filter. 7. A new measurement can be taken as long as the ready symbol is shown. If no button is pressed within 2 minutes, the thermometer will turn off automatically. 7 Note: In the following situations, it is recommended that you take three temperatures in the same ear. If they differ, use the highest reading. · Infants in the first 90 days of life. · Children under three years of age who have a condition such as a compromised immune system and for whom the presence or absence of fever is critical. · When you are first learning to use the ear thermometer until you are comfortable with the technique and are obtaining consistent readings. Important: As with any type of thermometer, slight temperature variations ( ± 0.3 - 0.5 °F / ± 0.2 - 0.3 °C) can occur, if consecutive measurements are taken. Temperature taking hints · The right ear reading may differ from the reading taken at the left ear. Therefore, always take the temperature in the same ear. · The ear must be free from obstructions or excess earwax buildup to take an accurate reading. · External factors may influence ear temperatures, including when an individual has: - been lying on one ear or the other - had their ears covered - been exposed to very hot or very cold temperatures, or - been recently swimming or bathing. In these cases, remove the individual from the situation and wait 20 minutes prior to taking a temperature.

Turn off the thermometer
Press and Hold the L/O Button
Continue to hold the start button when the F or C display appears. Watch for these displays to cycle over the display window.
#
Release the start button when the F display appears on the screen.
#
5

Listen for a beep and watch for the Braun ThermoScan ear thermometer to shut itself off, indicating that you changed the temperature scale to Fahrenheit successfully.
#
6

Follow the same procedure but release the start button when C shows on the display to switch from Fahrenheit to Celsius.

According to and directly from Nikon:

When you see Err on the control panel, LCD monitor or viewfinder of your digital camera it refers to a camera malfunction. Try the following:

1. Remove all accessories from the camera.
2. Install a freshly charged battery into the camera.
3. If your Nikon camera offers resets such as the two-button reset or a hardware reset please follow those instructions provided in the product manual.

If these steps do not resolve the Err message we recommend having a Nikon Authorized Repair Technician evaluate the Nikon camera. Click here for repair information.

Nikon Imaging Products Support Page:

http://imaging.nikon.com/products/imaging/support/index.htm