User Manual

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Siemens Building Technologies SED2 Advanced Operator Panel AOP CM1B5192en
HVAC Products Faults & Warnings 19.01.2004
9 Faults & Warnings
Note:
If a fault/warning condition occurs on a SED2 VSD to which an AOP connects, a fault/warning
code displays with a description of the relevant fault/warning. For a list of fault/warning codes, see
the SED2 Operating instructions, Document No. CM1U5192en.
9.1 Fault Indication / Fault Screen
If a fault condition occurs on a connected SED2 VSD, the AOP provides a fault message with specific infor-
mation about the fault condition such as:
• Identity of the SED2 VSD with the fault condition
• Fault code number
• Plain text explanation of the fault condition
Proceed by doing one of the following:
– Press
to acknowledge the fault, or
– Press
to clear the fault and perform a manual restart of the SED2 VSD.
Clearing the fault may depend on the fault condition. It may be necessary to investigate the cause of the
fault. Simultaneously press
and to display a fault-specific help screen to facilitate diagnosing the
fault condition.
9.1.1 Multiple Faults
If a SED2 VSD or network of VSDs reports more than one fault condition, the AOP displays all fault messages
by cycling through them until they are all acknowledged or cleared. See Fault Indication/Fault Screen above to
acknowledge each fault message.
9.2 Warning Indication/Warning Screen
If a condition occurs within the connected SED2 VSD(s), that should be brought to the users attention, then the
AOP provides a warning message with specific information about the warning condition such as:
• Identity of the VSD with the warning condition
• Warning code number
• Plain text explanation of the warning condition
There is no requirement for you to acknowledge a warning message. The message displays as long as the
SED2 VSD reports the warning condition.
Simultaneously press
and to display a warning-specific help screen to facilitate diagnosing the warning
condition.
9.2.1 Multiple Warnings
If a SED2 VSD or network of SED2 VSDs reports more than one warning condition, the AOP displays all warn-
ing messages by cycling through them until the conditions causing the warning messages cease to exist.