14
The thermometer
fails to power on.
"
Er1
" is displayed.
Low battery
Change the batteries.
Polarities of the batteries
are reversed.
Make sure that the batteries
are installed correctly.
Problem
Possible Cause
Solution
The thermometer is damaged.
Contact the manufacturer.
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 temperature
reading is higher
than the typical body
temperature range.
The lens of the temperature probe
is dirty.
Clean the lens using a cotton swab.
The distance between the
temperature probe and the target
is too long.
Move the thermometer closer to
the target.
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 probe is
damaged.
Contact the
manufacturer.
TROUBLESHOOTING
