Siemens FUG1010 IP65 NEMA 4X, Operating Instructions Manual, Page: 145 / 271

Troubleshooting
10.1 Troubleshooting
FUG1010 IP65 NEMA 4X
144
Operating Instructions, 01/2013, A5E02951519-AC
Error or Message Probable Cause Solution
- - -F- - - Fault Alarm

Loss of signal strength (ALC)
 Change of Rx signal location (Beam
Blowing)

Recouple sensors with fresh
couplant.
 Install sensors in Direct mount
mode.

Note: If problem persists call Tech
support.
Re-space Index The measured liquid sonic velocity (Vs)
is more than +/- 25% of the average Vs
range.

Assure proper pipe dimensions
and/or Liquid data entries are
correct.
 Properly enter correct Sensor Size
into the meter [Install Sensor]
menu.

Confirm sensor spacing is correct
by checking [Install Sensor] menu
spacing parameters.
Invalid Setup (use Direct Mode) During the Initial Makeup the system
detects invalid sensor spacing,
erroneous liquid pipe parameters, or
some other factor that prevents it from
completing the Initial Makeup.
This may be due to one of the
following:

An out-of-range data entry.
 An invalid condition (e.g.,
overlapping sensors in Reflect
Mode). If selecting Direct Mode
does not resolve, review all site
setup and sensor installation
choices particularly data entered for
pipe and gas.

In Reflect Mode the flow meter
detects that the pipe wall signal
may infringe upon the gas signal.
Use Direct Mode instead.
 Press <ENTER>, <Up Arrow>,
<Down Arrow>, or <Left Arrow> to
abort install routine. Continue
programming other site data in
anticipation of resolving the difficulty
later. Call technical support for help
if necessary.