21
UK
12 Troubleshooting
The unit has self-diagnostic options� It monitors itself automatically during opera-
tion�
Warnings and error states are displayed, even when the display is switched off�
Display Type
Description
Fault correction
Err
Error
Unit faulty / malfunction
►
Replace the unit�
Err
Error
• Flow value < -130 % MEW or
> 130 % MEW�
• Temperature value < - 50 °C
(-58 °F) or > 110 °C (230 °F)�
►
Check flow range /
temperature range�
No display Error
• Supply voltage too low�
• Setting [diS] = OFF
►
Check the supply voltage�
►
Change the setting [diS]
Loc
Warning Setting pushbuttons on the
unit locked, parameter change
rejected�
►
UL
Warning Below the display range�
• Current value between
-130 % ��� -120 % MEW
• Temperature value between
-50���-40 °C (-58���-40 °F)�
►
Check flow range /
temperature range�
OL
Warning Display range exceeded�
• Current value between
120 % ��� 130 % MEW
• Temperature value between
100���110 °C (212���230 °F)�
►
Check flow range /
temperature range�
MEW = final value of the measuring range
13 Technical data
Technical data and scale drawing at www�ifm�com�