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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: Defines 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 modified or disabled by the diagnostic.
None implies that there is no direct affect to the chiller, sub
components or functional operation.
®
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, Heat 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 specific feature.
Severity: Defines 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
support display of "Special Action", on its Diagnostics
pages, so that if a diagnostic has a special action defined
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
defined in the table, then the Tracer
display will indicate the shutdown type only.
Persistence: Defines 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 specifically
"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 defines the criteria used in
generating the diagnostic and, if nonlatching, the criteria
for auto reset.
Reset Level: Defines 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.
RTHD-SVX01K-EN
®
TU does not
®
TU Diagnostics Page
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