User Manual
Maintenance
To clean the lenses, use compressed air to clear dust and other
particles, then carefully clean with a wet cotton swab. The cotton swab
should be moistened with clean water.
To clean the meter housing, wipe with a damp, soft cloth. Do not use
solvents or abrasives. Do not immerse the IRT227 in water or other
liquid.
Troubleshooting
Symptom
Problem
Action
OL display
Target temperature exceeds
range
Select a target within
range
-OL display
Target temperature under-
range
Select a target within
range
Battery icon
flashes
Low Battery power
Replace Battery
Blank display
screen
Low battery power
Check and/or replace
battery
Incorrect/No
displayed
Wrong measurement function
selected
Press Up/Down arrow to
select
value
correct measurement
function
No Laser pointer
Low battery
Ensure that the Laser
(LAS) is set
to ON in the Settings
mode
Replace the battery
Display
Locked display
Turn the meter OFF then
pull
freezes/undefined
trigger again after 3
seconds
reading
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