techem 64251258, Operating Instructions Manual, Page: 14 / 146

14
Functional check
1 Open the shut-off valves in the inlet and outlet.
2 Check the leak tightness of the union piece connector.
3 Press the push-button on the meter to switch on the display.
Final tasks
1 Apply seals to the union piece connectors and both temperature sensors.
Wall-mounted computer unit (optional)
Depending on the device variant, the computer unit can be removed from the volume
measuring section to simplify installation or meter reading. Pull (do not rotate) the comput-
er unit upwards for this purpose. The wall-mounting plate for the computer unit is then on
the volume measuring section. Rotate the round wall bracket anti-clockwise to the volume
measuring section. Attach the wall bracket with the flat surface on the wall side .
!
The cable length between the volume measuring section and the computer unit
is max. 47 cm and cannot be changed!
The display must be accessible at all times and readable without further aids!
Displays/operation
Info codes
Code Priority* Meaning
C-1 1 The meter has a permanent fault and must be replaced. The readout values
cannot be used.
F -1 3 Temperature sensor faulty. Exchange the device and return it.
F -3 5 Outlet sensor registers a higher temperature than the inlet sensor. Check
whether the heat meter / the sensors are in the correct sections.
F -4 2 Flow sensors faulty. Exchange the device and return it.
F -5 6 Heat meter measures faultlessly. In order to save electricity, the optical interface
is temporarily out of operation.
F -6 4 The flow direction of the volume measuring section is incorrect. Check the
installation direction.
Error codes are displayed in 2-second rhythm to display 1-01.
Exception: C-1 is displayed exclusively.
*If several errors occur, only the error with the highest priority is displayed.
Additionally, a warning triangle as an icon draws attention to an error in the display.
Example: