Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Support on errors and faults 03.10.2011
29 Support on errors and faults
29.1 How to handle faults
Each fault is displayed with a fault number (fault no) in the operator unit display.
In addition Welcome > Main menu > Faults > Faults current.. allows you to view all
queued faults.
Proceed as follows:
1. Go to the section containing the specific fault description using the error/fault
code list (section 29.2)
2.
Identify the type of fault acknowledgement via the "Effect" column
3. Identify the LED signal meaning by means of the below table and carry out the
suitable action (e.g. acknowledge, acknowledge and reset, and/or find and
remove fault cause)
Type of
acknowledge
ment
Fault
is…
LED Action Result
No
acknowledge
ment required
Pending Lit
No action required Lit
Remove cause Off
No longer
pending
Off
No action required Off
Acknowledge
ment required
Pending Flashing
Press once
(acknowledge)
Lit
Remove cause Off
No longer
pending
Flashing
Press once
(acknowledge)
Off
Acknowledge
and reset
required
Pending Flashing
Press once
(acknowledge)
Lit
Remove cause Lit
Press twice (reset) Off
No longer
pending
Flashing
Press once
(acknowledge)
Lit
Press twice (reset) Off