7
TROUBLESHOOTING
Symptom
Problem
Action
OL appears on display
when measuring
Measured value is greater
than the maximum range
Stop measuring
-OL appears on display
when measuring
Measured value is less
than the maximum range
Stop measuring
ERR appears on display
when measuring
The min or max ambient
operating temperature has
been exceeded
Place the thermometer in
a 0
o
C-50
o
C (32
o
F-122
o
F)
environment and it can be
recovered after 30 mins
Battery indicator lights
Low battery
Replace the batteries
Laser fails or is weak
Low battery
Replace the batteries
The measurement is
inaccurate
Low battery
Emissivity mismatch
Measurement distance
too far or measured target
diameter is less than 20mm
