User Manual
Siemens Building Technologies CE2M5378xx 15.05.2015 8
6. Functional Details
If the respective operation thresholds are exceeded and flow
and temperature difference are positive, the meter summates
the energy and the volume.
If the operation thresholds have dropped, a "u" is displayed in
front. The current temperatures are presented together as
whole numbers in °C in a display line.
All segments of the display are switched on for control purpos-
es during the segment test.
The meter status for energy, volume and missing time is stored
in a log for the previous year on an annual basis on the annual
reference date.
The flow, power and temperature differences are recorded with
the appropriate +/- sign.
The operating hours are counted from the first connection of
the power supply. Missing hours are summated if there is a
fault and the meter is thus unable to take a measurement. The
date is incremented on a daily basis.
You can set the 8 digit property number (secondary address for
M-Bus operation) in the parameterising mode. The highest
value point is suppressed in the display. The appliance number
is issued by the manufacturer.
The number for the firmware version is issued by the manufac-
turer.
7. Error Messages
The meter continuously runs a self-diagnosis and can thus
recognise and display various installation or meter errors:
Error code Error Notes for service
FL
nEG
Incorrect flow direction
Check flow or installation dire
c-
tion; correct if necessary
if necessary in exchange with:
DIFF
nEG
Negative temperature di
fference
Check installation point of the
temperature sensors; exchange if
necessary
if necessary in exchange with:
F0
No flow measurable
Air in the measurement
unit
/
pipe
,
bleed air from pipe (delivery
condition)
F1
Interruption in the hot side te
m-
perature sensor
Meter exchange by specialists
F2
Interruption in the cold side te
m-
perature sensor
Meter exchange by specialists
F3
Electronics for temperature
evalu
a-
tion defective
Meter exchange by specialists
F4
Problem with the power supply;
Battery flat
Me
ter exchange by specialists
F5
Short
-
circuit hot side temperature
sensor
Meter exchange by specialists
F6
Short
-
circuit cold side temperature
sensor
Meter exchange by specialists
F7
Error in
internal
memory holding
Meter exchange by specialists
F8
Erro
rs F1, F2, F3, F5 or F6 for
longer than 8 hours, recognition of
attempts to manipulate.
No further measurements are
carried out.
Measure dependent on error
code. Error message F8 must be
reset by service department.
F9
Error in the electronics
Meter excha
nge by specialists
Notes
The following applies for MID conforming appliances in Ger-
many: For new installations in pipework less than or equal to
DN 25, the installation of short sensors must only be made if
they are directly immersed.
Note:
The documentation made available or acquired
along with our products (appliances, applications, tools
etc.) must be read carefully and completely prior to
use.
We require the users of the products and documents
to be appropriately authorised and trained and to have
appropriate specialist knowledge so that the products
can be used correctly.
Additional information about the products and applica-
tions can be found at:
Your nearest Siemens location
www.siemens.com/sbt or the system sup-
plier
Please be aware that Siemens will not be held legally
liable for any damage which results from non-
adherence to or inappropriate adherence to the points
above.
Siemens Schweiz AG
Building Technologies Division
International Headquarters
Gubelstrasse 22
CH-6301 Zug
Switzerland
2015 Siemens Schweiz AG