HT Instruments DM40 Manual De Instrucciones página 39

7. ERROR MESSAGES ON THE DISPLAY
Code
204
208
209
252
253
255
Description
Calculation error
Weak signal reflection,
measuring
long, distance > 40m or
<5cm
Received signal
strong
Temperature too high
Temperature too low
Hardware error
time too
too
EN - 18
Solution
Press
procedure
Carry out measurement
on an
surface
Target too
Use a target place
Cool down instrument
Warm up instrument
Turn off the instrument
and turn it on again
several times. Contact
Customer Service if the
message is displayed
again.
DM40
and repeat
appropriate
reflective.