Microlife PF100 Instruction Manual page 25

Other possible errors and their solutions:
If problems occur when using the device, the following points
should be checked
Malfunction
The display remains
blank.
Batteries have been
installed.
The instrument
frequently fails to
measure or the values
measured are wrong.
The unit fails to take a
measurement, year is
blinking
If you have any questions regarding the use of this device,
please ask your health care professional or contact Microlife
directly at 866-934-1839. The Microlife service team will be
happy to help you.
24
Remedy
1. Check the polarity of the
batteries (+/-)
2. If the display is erratic or
unusual, remove the batteries
and re-install new batteries.
1. Ensure that the measuring tube is
connected correctly
2. Ensure that the wing wheel is
rotating when air is moving
through the tube. Any objects,
dust liquids or mucus may
interfere the rotation of the wing
wheel. In this case clean the tube
as explained.
3. Discuss the values with your
doctor.
1. Ensure Date and Time are set.
(See section 3.2)