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24
that the storage and transportation environments meet the
requirements.
4) Check regularly whether safety risks exist.
5) Remove the batteries if the thermometer will not be used for more
than two months.
Troubleshooting
Problem
Possible Cause
Solution
The thermometer
fails to power on.
Low battery
Change the batteries.
Polarities of the
batteries are reversed.
Make sure that the
batteries are installed
correctly.
The thermometer is
damaged.
Contact the
manufacturer.
"Er1" is displayed.
The ambient
temperature is lower
than 10°C (50.0°F) or
higher than 40°C
(104°F).
Take a measurement
under an ambient
temperature between
10°C (50.0°F) and
40°C (104°F).
The temperature
reading is lower
than the typical
body temperature
range.
The lens of the
temperature probe is
dirty.
Clean the lens using a
cotton swab.
The thermometer
probe is not aligned to
the eardrum.
Reposition the
thermometer probe so
that it is aligned to
the eardrum.
The thermometer is
used within 30 minutes
after being taken from
a cold environment.
Wait for more than 30
minutes after the
thermometer is
moved into the
measurement
27


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