Diagnostics; General Diagnostics Information; Main Processor Diagnostics - Trane Ascend ACS 140 Installation, Operation And Maintenance Manual

Diagnostics

General Diagnostics Information

D D i i a a g g n n o o s s t t i i c c N N a a m m e e a a n n d d S S o o u u r r c c e e : : Diagnostics may be
shown in the spec with a source of "xy". In this case,
letter "x" can be either "1" or "2" (signifying which
circuit) and letter "y" can be "A", "B" or "C"
(signifying which compressor on that circuit). Some
circuit diagnostics don't have 'x' letter to indicate which
circuit is failing. Refer to TD7 alarm display for this
information.
A A f f f f e e c c t t s s T T a a r r g g e e t t : : 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.
D D e e s s i i g g n n N N o o t t e e : : Functions that are affected by a
diagnostic are simply reported as "chiller or circuit x"
targets in Tracer TU and on the Alarms page of the
AdaptiView™ display, even though only a specific
function and not the entire circuit or chiller would be
effected.
S S e e v v e e r r i i t t y y : : 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 TU does not support display of "Special
Action", on its Diagnostics pages, so that if a diagnostic
Table 29. Main process diagnostics
Affects
Diagnostic
Target
Name
MP: Reset Has
Platform
Occurred
MP: Invalid
N/A
Configuration
Phase
Protection Chiller
Fault
Low Suction
Circuit
Rfgt Pressure
AC-SVX002D-EN
Severity
Persistence
Warning
NonLatch
N/A
Latch
Immediate NonLatch
Immediate Latch
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® TU Diagnostics Page display will indicate
the shutdown type only.
P P e e r r s s i i s s t t e e n n c c e e : : 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).
A A c c t t i i v v e e M M o o d d e e s s [ [ I I n n a a c c t t i i v v e e M M o o d d e e s s ] ] : : 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.
C C r r i i t t e e r r i i a a : : Quantitatively defines the criteria used in
generating the diagnostic and, if nonlatching, the
criteria for auto reset.
R R e e s s e e t t L L e e v v e e l l : : 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.

Main Processor Diagnostics

Active
Modes
[Inactive
Modes]
The main processor has successfully come out of a
reset and built its application. A reset may have been
due to a power up, installing new software or
All
configuration. This diagnostic is immediately and
automatically cleared and thus can only be seen in
the Historic Diagnostic List in Tracer TU.
MP has an invalid configuration based on the current
All
Phase protection module recognized a phase loss,
phase reversal or under/over voltage of the line
All
power. Reset automatically after module recognizes
good power for 30 continuous seconds.
The suction refrigerant pressure fell below the low
pressure cutout trip point. See the Low Suction
All
Refrigerant Pressure Protection spec for more
Criteria
software installed.
details.
Reset
Level
Remote
Remote
Local
Local
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