Siemens Building Technologies CE1B2540en 74 319 0616 0 b 18.07.2008 29/32
If the controller uses a room temperature sensor
(room unit):
− Is the sensor affected by drafts, direct solar radiation,
etc.?
− Is the sensor affected by heat gains, such as people,
machines, lighting, etc.?
− Is the sensor covered by furniture, curtains, etc.?
− Are all thermostatic radiator valves in the "sensor's
room" in the fully open position?
The control no longer works:
− If the heat source and the heating
circuit pumps still operate: Press button
A to switch to manual operation:
2540Z06
−
Heating plant with a valve:
The valve can be operated manually by pressing but-
ton B (OPENING) or C (CLOSING)
− Heating plant with no valve:
The burner runs continuously. With two-stage burners,
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