JUMO exTHERM-DR, Operating Manual, Page: 85 / 100

14 What to do, if ...
85
14 What to do, if ...
Description Cause Remedy
The measured value flash-
es in the top display - The device has detected an error.
h
In the normal display, press the EXIT key
to see the error message.
v
Chapter 13 "Error messages"
Relay output controller K1
does not switch,
meaning that
the contact between termi-
nal 14 and 16 is not closed
although the LED lights up
yellow.
- The integrated fuse cut-out is defective,
caused by an excessive relay current.
h
Use a continuity test device to measure
terminal 14 and 16 of the relay when the
LED K1 lights up yellow.
h
The device must be repaired by JUMO if
no continuity can be measured.
v
For service addresses see back cover
... the display is dark - Display shut-down after timeout was activat-
ed.
h
Press any key
or switch off timeout.
v
Chapter 9.7.8 "Time-out Bedien."