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