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Siemens Heating and D.h.w. Controller RVL481 CE1P2541en
Building Technologies 7 Function block "Enduser general" 20.05.2008
7.4 Indication of errors
The following errors are indicated:
Number Fault
10 Fault outside sensor
30 Fault flow temperature sensor
40 Fault return temperature sensor (primary circuit)
42 Fault return temperature sensor (secondary circuit)
50 Fault storage tank temperature sensor/control thermostat 1
52 Fault storage tank temperature sensor/control thermostat 2
54 Fault d.h.w. flow temperature sensor
60 Fault room temperature sensor
61 Fault room unit
62 Wrong room unit connected
73 Fault collector sensor
81 Short-circuit on the bus (LPB)
82 Same bus address assigned several times (LPB)
100 Two clock masters on the bus (LPB)
120 Flow alarm
140 Inadmissible bus address or plant type (LPB)
If a fault occurs, the LCD displays .
In interconnected plants, the address (device and segment number) of the controller
causing the fault is indicated on all the other controllers. No address will appear on the
controller causing the fault.
Example of display in interconnected plants:
2540Z01
50
10
2
03
= operating line
= error number
= segment number
= device number
The error message disappears only after rectification of the fault. There will be no ac-
knowledgement!
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