12
Troubleshooting
Problem
Possible Cause and Correction
The Screen remains
blank when the
button is pressed.
The batteries may be installed backward.
Install the batteries correctly.
The battery power may be insufficient. Replace
the batteries to new ones. If the display still does
not appear, consult our service network.
Displayed temperature
readings are not normal.
The emissivity setting may be inappropriate.
Set the correct emissivity value.
Rapid changes in ambient temperature may
adversely affect the accuracy of measurement
Allow about 30 minutes for the unit to reach
ambient temperature, and then try again.
Warning Message
The following warning indicators may appear on the display.
Warning Indicator
Meaning
Batteries are running low and should be replaced.
(Note that battery replacement will not cause loss of
current settings.)
“OVER”
Temperature was too high to measure. (The temperature
of the object must be higher than measuring range)
“UNDER”
Temperature was too low to measure. (The temperature of
the object must be lower than measuring range)
