TROUBLE SHOOTING
Code
OL
-OL
Battery indication
Blank display
Laser does not work
Beeper beeps
continuously
BATTERY REPLACEMENT
To install or change one 9V battery (see below):
1. Push the button and pull the handle downward to open battery cover.
2. Install the battery noting its correct polarity.
3. Re-install the battery cover.
Battery: 9V 6F22 alkaline battery or equivalent
Problem
Target temperature is over range
Target temperature is under range
Low battery
Possible dead battery
1. Low or dead battery
2. Ambient temperature above 40°C (104°F)
Check if high/low alarm has been set and if
the measurement value is over the limit
Action
Select target within specifications
Select target within specifications
Check and/or replace battery
Check and/or replace battery
1. Replace battery
2. Use in area with lower ambient
temperature
Reset high/low alarm setting or
cancel the limit setting
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