Measurement Errors
Error messages will appear if the unit’s receiver is not getting a strong
enough laser return signal.
Common surfaces that could cause an error reading:
- Water or other fluids
- Translucent to clear surfaces like glass or acrylic
- Porous or dark surfaces may require longer reading times or
cause an error reading
- Moving surfaces or objects such as curtains
- Highly reflective or angled surfaces may deflect the laser beam signal
©2010 Johnson Level & Tool - Rev. 1
23
Error Codes
Code
Description
Solution
101
Distance is outside of measuring range
Measure in a shorter distance or
longer distance
102
Reflected signal is too weak
Measure on a better surface
103
Out of display range
Reset zero by pressing
104
Pythagorean theorem calculation error
Check and verify value is correct
105
Low Battery
Install a new battery
106
Temperature is outside of working range
Measure in an environment
within specified working
temperature range
107
Ambient light is too strong
Measure in a darker place
(shadow target)
