Basic Documentation

11 Help in the case of faults
11.1 Fault list
The following list contains all possible causes for faults, their display and priority.
Causes for faults
Display
Error / fault cause
Priority
FROST
Frost hazard.
Type: Simple alarm, frost with frost
protection unit (parameter: NO)
Type: Extended alarm, frost with sensor
(parameter: YES or YES3)
1
MAINALM
1
Main controlled variable missing
Sequence controller 1
Type: Simple alarm
2
MAINALM
Main controlled variable missing
Sequence controller 2
Type: Simple alarm
3
DV ALM
1
Deviation message, sequence
controller 1
\_ : Lower deviation
_/ : Upper deviation
Type: Simple alarm
4
DV ALM
2
Deviation message, sequence
controller 2
\_ : Lower deviation
_/ : Upper deviation
Type: Simple alarm
5
X1 - - - / ooo
Sensor error X1
Type: Simple alarm
6
X2 - - - / ooo
Sensor error X2
Type: Simple alarm
7
X3 - - - / ooo
Sensor error X3
Type: Simple alarm
8
X4 - - - / ooo
Sensor error X4
Type: Simple alarm
9
X5 - - - / ooo
Sensor error X5
Type: Simple alarm
10
STATUS OK Display in normal operation
11
Legend Display Meaning
- - - Open circuit
ooo Short-circuit
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Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Help in the case of faults 29.08.2008