Error, faults & troubleshooting
Error
Cause
code
204
Calculation error
220
Low battery
255
Received signal too
weak or measurement
time too long
256
Received signal too
strong
261
Out of measuring
range
500
Hardware error
Maintenance and cleaning
The product is maintenance-free.
CAUTION! Never submerse the product in water or other
liquids. Do not allow any moisture to penetrate into the product
during cleaning.
56 GB/IE
Solution
Refer to user manual, repeat
the procedures.
Replace batteries or charge
the batteries.
Improve the reflective surface.
(Use target plate, white paper)
Improve the reflective surface.
(Use target plate, or don't aim
at strong light)
Measuring the distance within
measurement range.
Switch on / off the product, if
the symbol still appears after
several times, please contact
with your dealer.