Displays / operation
Info codes
Code
Meaning
F-1
Temperature sensor faulty. Exchange the device and return it.
F-4
Flow sensors faulty. Exchange the device and return it.
F-5
Heat meter measures faultlessly. - In order to save electricity, the optical interface is tempo-
rarily out of operation.
F-6
The flow direction of the volume measuring section is incorrect. Check the installation
direction.
C-1
The meter has a permanent fault and must be replaced. The readout values cannot be used.
Display levels
The heat meter has two display levels - the readout level and the service level.
A long press of the button switches between the display levels. A short press of the
button jumps to the next display
!
In the device number display, the number next to the display identifier is the first
digit of the device number.
8
2
.