6. Fault finding and repair
During production all units go through a number of quality
control stages. In order to assist you in fault finding we have
listed a number of possible faults, causes and solutions.
6.1 System fault messages
Faults that could occur during the self test or during operation
are immediately indicated on the red LED or on the display.
Acknowledgeable fault messages are deleted either using the
PC software or by operating a push button and are accessed in
the operating menu under the function group “Operating
parameters” in the operating address “Actual fault”
AERR.
Green
LED
Red
LED
Effect Cause Fault
code
Solution
Off Off No measured
value
display
No power supply connected Please check the
power supply to the
unit
Unit defective Please exchange the
unit
Fuse of power supply defective Please replace the
fuse (see technical
data)
On Off No measured
value
display
Unit defective Please exchange the
unit
Display defective Please replace the
display
Sensor incorrectly connected Connect the sensor
to the connection
diagram (chapter 3)
(polarity).
Sensor defective Change sensor
Process transmitter incorrectly set up Please chaeck the
input range
Process transmitter defective Replace unit
On Off The 7 seg-
ment display
shows a
meas. value
Normal fault free operation E 000
The 7 seg-
ment display
shows an
incorrect/
inaccurate
measured
value
Measurement input incorrectly set up Change set up in
operating menu
Sensor calibration faulty Compensate fault
using offset
Offset incorrectly set up Check offset
Process transmitter
65
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