![background image](http://html1.mh-extra.com/html/ifm/si0558/si0558_operating-instructions-manual_3997254015.webp)
Flow monitor
SI0558 SI0564
15
10 Troubleshooting
Indication
Description
Corrective measures
The display goes OFF briefly
(LEDs go off when a button is pressed)
The sensor is permanently locked.
After approx. 0.6 seconds, the last oper-
ating status is indicated.
u
Unlock unit. See Lock / unlock
(
Display OFF (no LED on)
Operating voltage too low (< 19 V) or
failed.
u
Ensure correct voltage supply.
Automatic adjustment not successful.
The switch point is outside the measur-
ing range.
u
Check flow and installation, repeat
adjustment if necessary. See
Teaching the switch point (
12).