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Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Description of the enduser settings 15.07.2002
3.22 Indication of faults
• Straightforward checking of plant
• Fault tracing is made easier
The controller indicates faults that may have occurred in the controller itself or in the
system.
The display shows "Er" if an error has occurred.
1. Press the operating line selection buttons to select line 50.
2. Press the + / - buttons to display the list of faults.
Display Unit
0...255 -
The first entry in the error list will automatically be displayed on this operating line.
By pressing
, it is possible to switch between error signals.
The controller can store a maximum of 2 error signals. The error signal will be cleared
only after the cause of the fault has been removed. If additional errors are present, they
will be stored as soon as storage capacity becomes available.
Errors that may occur locally on this device:
Display Description of error
Blank No error
10 outside temperature sensor
26 Cascade flow temperature sensor
46 Cascade return temperature sensor
50 D.h.w. temperature sensor
58 D.h.w. thermostat
61 Fault room unit
70 Buffer storage tank temperature sensor
81 Short-circuit LPB
82 Address collision on LPB (same address several times)
86 Short-circuit PPS
100 2 clock masters present
145 Wrong device connected to PPS
146 Inadmissible plant configuration
147 No BMU connected
150 General BMU fault
In the case of error code 150, operating line 49 also gives the manufacturer-specific
error code of the BMU.
Benefit
Description
Setting
Effect
Note
Error signals
Device errors
Note
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