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Error messages
The heat meter constantly performs self-diagnostics
and can display various error messages.
Error
Error / action to be taken:
code:
No flow;
F0
Air in measuring unit / pipe, vent pipe
Interruption of flow sensor
F1
Interruption of return sensor
F2
Electronic for temperature evaluation defective
F3
Battery empty; replace!
F4
Short-circuit flow sensor
F5
Short-circuit return sensor
F6
Fault in the internal memory
F7
F1, F2, F3, F5 or F6 pending for longer than 8 hours.
F8
No more measurements are performed.
Error in the electronics
F9
Message F8 has to be reset in parameter setting
mode
(manually,
PappaWin).
messages are cleared automatically once the error
has been corrected.
Functional details
If the response thresholds are exceeded and the
flowrate and temperature difference are positive, the
quantity of thermal energy and the volume are
summated. In the segment test, all segments of the
display are switched on for test purposes.
On the yearly set day, the meter readings for
quantity of heat and volume, the values for the
service life maxima and the flowrate and missing
times are placed in the previous year memory.
The flowrate, heat power, and temperature
difference are acquired with the correct sign. If the
response threshold is not reached, the value is
preceded by a u. The current temperatures are
shown together on one line of the display as
integers in °C.
To calculate the maximum, the heat power and
flowrate are averaged over a measuring period of,
for example, 60 min. The maximum values from the
average calculation are preceded by Ma on the LC
display.
The 8-digit property number (also the secondary
address in M-bus operation), can be set in
parameter setting mode. The unit number is
assigned by the manufacturer.
The operating time is counted from the first time
the power supply is connected. Missing times are
summated, if an error is pending that prevents the
heat
meter
from
incremented daily.
The type of installed modules is displayed. If an M-
but module is installed, the primary and secondary
address will be displayed on the following lines.
The number for the firmware version is assigned
by the manufacturer.
UH50 Ultrasonic Heat Meter
All
other
measuring.
The
date
Installation and Service Instructions
Notes
• Regulations on the use of heat meters must be
observed, see EN 1434, Part 6!
In particular, cavitation in the system must be
avoided.
• Heat meters up to DN25 may only be installed
with directly immersed sensors according to
German calibration law!
• Install the unit in such a way that no water can
enter the electronic unit during operation.
• All information given on the data sheet of the heat
meter must be observed.
• User seals may only be removed by authorized
persons for service purposes and must be
replaced afterwards.
• No later than 30 seconds after installation, the
heat
meter
automatically and is ready for communication or
error
pulse output.
• The type of modules plugged can be displayed in
the service loop depending on how the display is
parameterized.
• For fast pulses, the parameters must be set
accordingly with the PappaWin software.
• Up-to-date versions of all instructions can be
found in the Internet at www.landisgyr.com
is
detects
the
plugged
Landis+Gyr GmbH
Humboldtstr. 64
D-90459 Nuremberg
UH 206-101c
modules
Germany
Page 8 / 8
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