User's Manual

22
Fault
Symptom
Possible Cause
Solution
after the
instrument is
powered on
than 40C or lower than
10C.
temperature of 10C
to 40C.
"ErC" is
displayed
after the
instrument is
powered on
There is a read/write
error in internal storage
data or temperature
correction is not
completed.
Contact the
manufacturer for
processing.
The
measurement
result is lower
than a normal
value
The lens of the
temperature probe is
dirty.
Use a cotton ball to
clean the lens of the
temperature probe, to
ensure that the lens is
not blocked.
The measurement
method is incorrect that
the temperature probe is
too far away from the
measured position.
Make measurement
according to the
correct method, and
shorten the
measurement
distance.
After entering the
measurement environment
from a colder environment,
the thermometer is not
placed for more than 30
minutes.
Place the
thermometer in the
measurement
environment for more
than 30 minutes.