18 ©2011 Johnson Level & Tool
Measurement Errors
Error messages will appear if the unit’s receiver is not getting a
sufficient 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
Error Codes
Code Description Solution
Err01
Distance is outside of measuring range
Measure in a shorter
distance or longer distance
Err02 Reflected signal is too weak Measure a better surface
Err03 Out of display range Maximum Value: 99,999
Split up measurement area
into smaller segments.
Err04
Pythagorean theorem calculation error
Check and verify value or the
sequence of measurements
is correct
Err05 Low Battery Install a new battery
Err06
Temperature is outside of working range
Measure in an environment
within
specified working
temperature range
Err07 Ambient light is too strong Measure in a darker place
(shadow target)
4533H-English_Manuals 4/1/11 10:49 AM Page 18
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