Trane Tracer TD7 User Manual page 16

Diagnostics
Diagnostic Name and Source: Name of Diagnostic and
its source. Note that this is the exact text used in the
User Interface and/or Service Tool displays.
Affects Target: Defi nes the "target" or what is affected
by the diagnostic. Usually either the entire Chiller,
or a particular Circuit or Compressor is affected by
the diagnostic (the same one as the source), but in
special cases functions are modifi ed or disabled by the
diagnostic. None implies that there is no direct affect to
the chiller, sub components or functional operation.
Design Note: Tracer™ TU does not support the display
of certain targets on its Diagnostics pages although
the functionality implied by this table is supported.
Targets such as Evap Pump, Ice Mode, Chilled Water
Reset, External Setpoints etc. – are displayed as simply
"Chiller" even though they do not imply a chiller
shutdown – only a compromise of the specifi c feature.
Severity: Defi nes the severity of the above effect.
Immediate means immediate shutdown of the affected
portion, Normal means normal or friendly shutdown
of the affected portion, Special Action means a special
action or mode of operation (limp along) is invoked, but
without shutdown, and Info means an Informational
Note or Warning is generated. Design Note: Tracer TU
does not support display of "Special Action" , on its
Diagnostics pages, so that if a diagnostic has a special
action defi ned in the table below, it will be displayed
only as "Informational Warning" as long as no circuit
or chiller shutdown results. If there is a shutdown and
special action defi ned in the table, then the Tracer TU
Diagnostics Page display will indicate the shutdown
type only.
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Persistence: Defi nes whether or not the diagnostic and
its effects are to be manually reset (Latched), or can be
either manually or automatically reset when and if the
condition returns to normal (Nonlatched).
Active Modes [Inactive Modes]: States the modes or
periods of operation that the diagnostic is active in
and, as necessary, those modes or periods that it is
specifi cally "not active" in as an exception to the active
modes. The inactive modes are enclosed in brackets, [ ].
Note that the modes used in this column are internal and
not generally annunciated to any of the formal mode
displays.
Criteria: Quantitatively defi nes the criteria used in
generating the diagnostic and, if nonlatching, the criteria
for auto reset. If more explanation is necessary a hot link
to the Functional Specifi cation is used.
Reset Level: Defi nes the lowest level of manual
diagnostic reset command which can clear the
diagnostic. The manual diagnostic reset levels in order of
priority are: Local or Remote. For example, a diagnostic
that has a reset level of Remote, can be reset by either
a remote diagnostic reset command or by a local
diagnostic reset command.
Help Text: Provides for a brief description of what kind
of problems might cause this diagnostic to occur. Both
control system component related problems as well as
chiller application related problems are addressed (as
can possibly be anticipated). These help messages will
be updated with accumulated fi eld experience with the
chillers.
RLC-SVU006A-E4