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Siemens Building Technologies
Basic Documentation RVA47.320
CE1P2379E
HVAC Products
Description of the enduser settings
15.07.2002
Service .
3.21
Displaying the BMU error code
•
Straightforward checking of plant.
•
Fault tracing is made easier.
For each BMU, the RVA47.320 can log and store one fault status signal with the
associated BMU number and error code. The faults are indicated on this operating line.
1. Press the operating line selection buttons to select operating line 49.
2. Press the + / - buttons to interrogate the individual BMUs.
Display
Unit
1...4 / 0...255
BMU number / error code
The number of the lowest connected BMU number containing a fault entry will
automatically be displayed on this line.
Error messages cannot be acknowledged. They disappear only if the appropriate fault
has been rectified.
The display shows the BMU number and the associated error code. When none of the
BMUs delivers a fault status signal, or when no BMU is connected, there will be no
display.
The meaning of the different error codes depends of the make of BMU used. For this
reason, no overview of all the different error codes can be given here. For details,
please refer to the technical documentation of the relevant product.
0
4
8
12
16
20
24
2379
Z0
2
BMU 1 signals error code 1.
If there is a BMU error code, operating line 50 also displays a general BMU error (error
code 150).
Benefit
Description
Setting
Effect
Note
Display
Example:
Note
