Failure table
FaultPotential causes
Mögliche Ursache
Possible measures
LED display
Both LED displays flash
-however, false values are-
displayed in the overrid-ing
controller
Connection between the
devic eplug and the
overriding controller is
loose/defective
Check the connection and
re-place the cable or plug if
necessary
An LED display does not
illuminate
Wire break
Repairs by manufacturer
Soldering point defective
Sensor defective
No LED display illuminates
Power failure
Check the supply cable
Check the fuses
Measuring unit is blocked
Put the device out of
operation immediately!
Send devices of model 1, 2,
6 and 8 to manufacturer to
be repaired
Devices of model 4 and 5
can be cleaned by user
Seal failure / Leakage
Leakage
O-Ring in the device is
defective
Send devices of model 1, 2,
6 and 8 to manufacturer to
be repaired
Devices of model 6 and 8:
Check seal compatibility, if
necessary consult the
manufacturer and install a
new seal set (obtain from the
manufacturer).
O-ring between housing and
connection plate defective
Replace O-ring.
Defective values in the overriding controller
Reduction of measuring
accuracy
Wear
Check the measuring device
or send it to the
manufacturer for repair.
DV04 Instruction manual 02/2021
page 11
