Unlocking
When the programming pushbutton is released the unit is unlocked
and all programming functions are active again.
Error messages
If empty or full adjustment cannot be made, the red LED flashes quick-
ly at about 8 Hz after the adjustment attempt (adjustment error).
To delete this error message press the programming pushbutton once
or power off and then power on again. The measured values succes-
sfully read so far remain unchanged.
Possible reasons for an error message:
• The signal difference between the empty and full state is too small
(e.g. empty and full adjustment without sufficient change of the
level).
• The signal change between the empty and full state is in the wrong
order (e.g. empty adjustment in the full state and then full adjust-
ment in the empty state).
• Empty adjustment outside the operating range (e.g. empty adjust-
ment in case of direct contact with an electrically grounded medi-
um, e.g. if the active zone is immersed in water).
Help: Avoid the above-mentioned errors and repeat the adjustment for
error correction.
12
Press the
programming pushbutton
for min.
10s.
After approx. 10 s the green LED flashes briefly
for 2x. The unit is unlocked again and the LEDs
indicate the current operating state.
min. 10 s
