Troubleshooting
14
15
Frequently Asked Questions
Frequently Asked Questions
Screen
display
Reasons
Solutions
HI
When the target object
temperature is higher than
measurement range. If ear
temperature is more than
43.0°C, the LCD screen will
show "HI" indication.
1. (When the measurement
probe is not properly
placed in the ear canal
or if the measurement
distance is too far during
the measurement process,
the measurement result
may be low.)
2. When measurement
probe is dirty, the
measurement value may
be low; (See cleaning
instructions above).
Lo
When the target object
temperature is lower than
measurement range. If ear
temperature is less than
34°C, the LCD screen will
show "Lo" indication.
Er.H
This product has an upper
limit operating temperature
of 40°C. When the ambient
temperature exceeds this
temperature point, the LCD
screen will display an error
message “Er.H".
When you operate this
product, the environment
temperature cannot be
greater than 40°C.
Er.L
This product has a lower
limit operating temperature
of 10°C. When the ambient
temperature exceeds this
temperature point, the LCD
screen will display an error
message “Er.L”.
When you operate this
product, the environment
temperature can not be
lower than 10°C.
Err
When the environment
temperature changes
rapidly about 5 degrees,
it will show “ Err ” during
measurement in object
temperature mode, then
shutdown automatically.
When it shows “Err”,
please place this product
and keep steady in current
environment for 30 minutes
before next measurement.
When the operation is wrong, if the sound is turned on, then the
sound will read the value and remind at this moment. (A short
beep will be heard.)
Troubleshooting
Issue
Reasons
Solutions
When the power
is turned on, the
screen can not be
displayed.
The battery is flat.
Replace the new
battery.
The battery
polarity may be
incorrect.
Check battery
polarity, as per
markings on the
case.
The measurement
temperature is
low.
The measurement
position is not
correct.
Measure the
temperature correctly
according to the
instructions.
Possible dust on
sensor or ear wax
in ear.
Clean thermometer
and ear canal.
Big temperature
fluctuations
with continuous
measurement.
Measurement
interval is too
short.
Wait at least 10
seconds between
measurements.
