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24
Error
message
Cause Solution
ER4
The ear thermometer
registered a large
change in the ambient
temperature.
Place the ear thermometer
in a room with an ambient
temperature between 10 °C
and 40 °C (50 °F and 104 °F)
for at least 30minutes.
ER5
The ear thermom-
eter is not working
properly.
Replace the batteries and
try again. If the fault occurs
again, contact Customer
Services.
ER6
You are in the “Measur-
ing object temperature”
mode and the protec
-
tive cap is still on.
The protective cap must be
removed to measure object
temperatures.
In-ear measurement:
the measured tem
-
perature is over 43 °C
(109.4 °F).
Object measurement:
the measured temper
-
ature is over 100 °C
(212 °F).
Ensure that the device and
the protective cap are fully
functioning. Perform the
measurement again.
Error
message
Cause Solution
Lo
In-ear measurement:
the measured temper
-
ature is below 28 °C
(82.4 °F).
Object measurement:
the measured
temperature is below
-20 °C (-4 °F).
Ensure that the device and
the protective cap are fully
functioning. Perform the
measurement again.
The batteries are
empty.
Remove the two empty
batteries and insert two
new 1.5 V AAA batteries in
-
to the ear thermometer.
If you cannot find a solution to your problem here, contact our
Customer Services.
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