9
Situation Solution
Ambient
temperature is not
within the allowed
operating range
( 50–104 °F or
10–40 °C).
Allow the thermometer to remain
for 30 minutes in a room where
the temperature is between
50 and 104 °F or 10 and 40 °C.
HI = too high
LO = too low
Temperature taken
is not within typical
human temperature
range (93.2–108 °F
or 34–42.2 °C )
Make sure the probe tip and lens
are clean and a new, clean,
disposable lens lter is attached.
Make sure the thermometer is
properly inserted. Then, take a
new temperature.
System error Reset the thermometer
by removing the battery and then
replacing it again, wait 1 minute,
then turn on again.
Please contact your authorized
Service Center (See Guarantee
Card).
Battery is low. Insert new battery.
Battery is too low.
Device cannot be
powered on to the
ready state.
Insert new battery.
Changing the temperature scale
Make sure the thermometer is turned o. Press
and hold down the “start” button. Keep holding
down the “start” button and after about 3
seconds the display will start to cycle between
temperature scales (°F or °C).
Release the start button when the desired scale
is shown. This will reset the thermometer to the
new temperature scale.
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