PLEM 50 C4
■ 24
│
GB
│
IE
Troubleshooting
Error
code
Cause Remedy
204 Calculation error Repeat the procedure.
220 Batteries low Replace the batteries.
255
Received signal too
weak or measuring
time too long
Avoid non-reflective or poorly
reflecting surfaces. Find a
measurement point that is more
reflective (use white paper).
256
Received signal too
strong
Avoid highly reflective or mir-
rored surfaces. Find a measure-
ment point that is less reflective
(do not aim at a bright light).
261
Outside the measur-
ing range
Stay within the maximum meas-
uring range of the device.
500 Hardware fault
Switch the product off and back
on again. If the error code
still appears despite repeated
switching on and off, contact
the Service hotline.