Nivotester FTR525
Endress+Hauser
47
Diagnostics and troubleshooting
10 Diagnostics and troubleshooting
10�1 General troubleshooting
For local display
Fault Possible causes Remedial action
Local display dark and no
output signals
No contact between
connecting cables and
terminals
Check the connection of the
cables and correct if necessary
Power supply missing Check power supply
of the FTR525
Electronics is defective Contact service
Local display is dark, but signal
output is within the valid range
Display is set too bright or
too dark
Set contrast 39 and/or
brightness 40
Display module is defective Contact service
Text on local display
looks unusual
Individual segments of
the display are defective
Format display 39,
contact service if necessary
Text on local display appears in
a foreign language and cannot
be understood
Incorrect operating language
Change operating language
37
For output signals
Fault Possible causes Remedial action
Signal output outside the valid
range
Electronics is defective Contact service
Device shows correct value on
local display, but signal output
is incorrect, though in the valid
range
Check and correct parameter
33
Device measures incorrectly
For access
Fault Possible causes Remedial action
No write access to certain
parameters
Wrong or no unlock parameter
entered
Enter valid unlock parameter
42
No access to all functions (lock
symbol
lights permanently)
Key lock activated 42
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