The operating elements
2
1
5
Plug-in type operator unit
2
1
5
Detached operator unit
Siemens Building Technologies / HVAC Products
1
Display
3
2
INFO button
4
Function 1:
Function 2:
3
OK select-and-press knob
Turn:
Press:
4
ESC button
Returning to the previous menu
3
5
Fault button with LED
4
LED lit / flashes:
Press:
CE1B3121x2-en
Display of key plant data
Display of information about the individual
datapoints on the current menu
Selection of menu options or adjustment of
values
Confirmation of menu options or settings
Indication of fault
Acknowledgement of fault or reset
74 319 0462 0 a
3
15.04.2005