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Error Messages and Troubleshooting
Error message
Cause(s)
Remedy
Number of
defective logs:
The self-monitoring
function of the FCU has
detected a check sum
error for one or more
stored logs.
Possible causes
•
Strong electromagnetic
interference has
changed the measured
value memory.
•
The internal back-up
battery is dead.
•
A measurement has
been started and
terminated – for
example as a result of
the FCU being switched
off – without any
measured values being
stored.
•
A measurement
previously conducted
resulted only in a flow
error.
-> The protocol
contains no values.
The defective logs are
deleted automatically.
After the next power up,
this message is not
displayed again if it was
just a brief malfunction.
If this message is
displayed several times,
this means that the
internal back-up battery
is probably dead. Send
the FCU to HYDAC for
repair.
No logs stored!
You have tried to print
logs, but the FCU memory
is empty.
Carry out
measurements.
Too few points
You have tried to print a
graph, but the selected log
has insufficient
measurement values (min.
3) to produce a graph.
Print out the protocol in
the form of a list.
Battery needs
charging
The rechargeable
batteries are dead.
Measurements are still
possible. However, it is
better to connect a
power adapter, in
particular for printing.
FCU 8111 /-Aviation
en(us)
/
BEWA FCU8111 3690427a en-us 2017-01-23.doc
2017-01-23