Siemens Building Technologies CE1B2540en 74 319 0616 0 b 18.07.2008 27/32
Faults and manual operation
If you are uncertain:
− Is the plant switched ON?
− Are all plant fuses in order?
− Is sufficient fuel in the tank?
− Has the controller been readjusted by unauthorized
persons? (Time of day, setpoints, etc.)
− Check the display. If is shown, line displays an
error code:
10 = fault outside sensor
11 = fault solar sensor
12 = fault wind sensor
20 = fault boiler temperature sensor
30 = fault flow temperature sensor
40 = fault return temperature sensor
42 = fault return temperature sensor
50 = fault storage tank temperature sensor/control
thermostat 1
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