Trane Sintesis RTAF Installation, Operation And Maintenance Manual page 75

Table 27. Main processor diagnostics (continued)
Diagnostic Affects
Name Target Severity Persistence
High Evaporator
Water
Info and
Temperature
Chiller Special
High Evap
Action
Water
Temperature
High Motor
Winding
Temperature –
xA Circuit Immediate Latch
High Mtr
Windng Temp -
xA
High Oil
Temperature - Cprsr Immediate Latch
xy
High Pressure
Cprsr Immediate Latch
Cutout - xy
High Refrigerant
Pressure Ratio -
xy Cprsr Immediate Latch
High Rfgt Press
Ratio - xy
LCI-C Software
Mismatch: Use
BAS Tool Chiller Info
LCI-C Software
Mismatch
Liquid Line
Circuit Normal
Pressure Sensor
Liquid Line
Temperature
Sensor
Liquid Line Circuit Normal
Temp Sensor
Liquid Line
Temp Sensor
Loss of Oil for
Compressor
(Running) Circuit Immediate Latch
Loss of Oil for
Cprsr (Run)
Loss of Oil for
Compressor Immediate
(Stopped) Circuit and Special
Loss of Oil for Action
Cprsr (Stop)
RTAF-SVX001A-EN
Active
Modes
[Inactive
Modes] Criteria
Either the leaving or the entering water temperature exceeded the high
evap water temp limit (TU service menu settable –default
Only effective
105F(65.55C), range 80F(26.67C)-150F(65.55C) for 15 continuous
if either
seconds. The evaporator water pump relay will be de-energized to stop
1)Evap Wtr
the pump but only if it is running due one of the diagnostics listed on
Flow Overdue
the left. The diagnostic will auto reset and the pump will return to
2)Evap Wtr
normal control when both the entering and leaving temperatures fall
NonLatch Flow Loss or
5°F below the trip setting. The primary purpose is to stop the
3)Low Evap
evaporator water pump and its associated pump heat from causing
Rfgt Temp,-
excessive waterside temperatures and waterside pressures when the
Unit Off,
chiller is not running but the evap pump is on due to either Evap Water
diagnostic is
Flow Overdue, Evaporator Water Flow Loss, or Low Evap Temp – Unit
active.
Off Diagnostics. This diagnostic will not auto clear solely due to the
clearing of the enabling diagnostic.
The respective compressor's motor winding thermostat is detected to
All
be open. The compressor shall stop within 5 seconds of this diagnostic.
All
[compressor
run unload or The oil temperature entering the compressor exceeded 199.4°F.
compressor
not running]
A high pressure cutout was detected; trip at 315 ± 5 PSIG. For AFD
compressor configurations, the HPC is connected directly to the AFD
All
and the UC800 will get an AFD Fault – xA diagnostic when the HPC is
tripped.
The pressure ratio for the respective circuit exceeded 12.3 for 1
Cprsr contiguous minute while any compressor is running or in service
Energized pumpdown. This pressure ratio is a fundamental limitation of the HiVi
compressor. The pressure ratio is defined as Pcond (abs)/Pevap(abs).
The neuron software in the LCI-C module does not match the chiller
type. Download the proper software into the LCI-C neuron. To do this,
Nonlatch All
use the Rover service tool, or a LonTalk® tool capable of downloading
software to a Neuron 3150®.
Bad Sensor or LLID. Note: This is the subcooled liquid line pressure
Latch All
sensor.
Latch All Bad Sensor or LLID. Note: This is the subcooled liquid line temp sensor. Remote
Starter In running modes, Oil Loss Level Sensor detects lack of oil in the oil
Contactor sump feeding the compressor (distinguishing a liquid flow from a vapor
Energized flow).
Oil Loss Level Sensor detects a lack of oil in the oil sump feeding the
Compressor compressor for 90 seconds after EXV preposition is completed (and
Latch Pre-start [all before EXV equalization, if applicable) on an attempted circuit start.
other modes] Note: Compressor start is delayed pending oil detection during that
time, but not allowed once the diagnostic occurs.
Diagnostics
Reset
Level
Remote
Local
Remote
Local
Remote
Remote
Remote
Local
Local
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