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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)
1
00
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:
25
4
0
Z
0
1
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!