Troubleshooting
All errors or failures will be shown as codes. The
following table explains the meaning of codes and
solutions.
Code Cause Corrective Measure
204 Calculation error Refer to user manual, repeat the
procedures.
208 Excessive current Please contact your distributor
220 Battery low Replace new batteries.
252 Temperature is
too high
The external temperature for the
instrument should be kept at
0°C-40°C
253 Low temperature Warm up the device to meet
work conditions.
255 Received signal
too weak,
measurement time
too long
Use target plate or change to a
better reflective surface.
256 Received signal
too strong
Target too reflective use target
plate or do not aim at strong light
objective.
261 Measure value
over range
Please make measurement
within its range
500 Hardware error Switch the device on/off several
times. If the symbol still appears,
then your instrument is defective.
Please call your distributor for
assistance.
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