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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
environment.
The temperature
reading is higher
than the typical
The temperature
probe is damaged.
Contact the manufacturer.
