Troubleshooting
Problem Probable
cause Corrective
action
Batteries are drained.
Replace all batteries with
new ones.
Nothing appears in
the display, even
when the power is
turned on.
Battery terminals are not in
the correct position.
Place the battery terminals
correctly.
The LOW BATTERY
mark (
) appears.
Batteries are drained.
Replace all batteries with
new ones.
Readings are too
high or too low.
The measurement is not
correct.
Measure again, following
instructions carefully.
appears.
The measuring room
temperature is 40.1
or
over.
appears.
The measuring room
temperature is less than
5 .
Move the thermometer to a
room with a room
temperature of 25 and
leave it there for an hour.
Then measure again.
appears.
The measurement is not
correct.
Insert the thermometer into
the ear properly and
measure again.
appears.
The reading is less than 34 .
appears.
The reading is 42.3 or over.
Measure again, following
instructions carefully.
Notes
1. See “Using the Ear Thermometer” on pages 8-12 for proper measurement
techniques.
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