Trane Optimus RTHD - More Main Processor Diagnostics

80
RTHD-SVX01L-EN
Table 23. Main processor diagnostics (continued)
Diagnostic Name
Affects
Target
Severity
Persistence
Active Modes
[Inactive Modes]
Criteria
Reset
Level
No Differential
Refrigerant Pressure
Chiller Immediate Latch
Chiller Energized
The system differential pressure was below 7.7 Psid. The
occurrence of this diagnostic will saturate the above “Low
Diff Rfgt Press” Integral and invoke the same “Compressor
Cool Down” operating mode.
Remote
Oil Flow Protection
Fault
Chiller Immediate Latch
Starter Contactor
Energized [all Stop
modes]
The Oil Pressure Transducer for this Chiller is reading a
pressure either above its Condenser Pressure by 15 Psia or
more, or below its Evaporator Pressure 10 Psia or more for
30 seconds continuously.
Local
Oil Pressure
Transducer
Chiller Normal Latch All Bad Sensor or LLID Remote
Outdoor Air
Temperature Sensor
Chiller
Warning
and Special
Action
Latch All
Bad Sensor or LLID. This diagnostic will only occur if OA
sensor is configured. OA Chilled water reset will be
suspended if selected and Tracer OA unavailable.
Remote
Refrigerant Monitor
Input
Chiller
Warning
NonLatch All –if installed
Open or Shorted input and the Rfgt Monitor is setup as
installed
Remote
Restart Inhibit Chiller
Warning
NonLatch All
The Restart Inhibit was invoked on a compressor. This
indicates excessive chiller cycling which should be
corrected.
Remote
Software Error
Number: 1001 Call
Trane Service
All
functions
Immediate
Latch – power
down reset is
reqd
all
A high level software watchdog has detected a condition in
which there was a continuous 5 minute period of
compressor operation, with neither chilled water flow nor a”
contactor interrupt failure” diagnostic active. The
occurrence of this software error message suggests an
internal software state chart misalignment has occurred.
The events that led up to this failure, if known, should be
recorded and transmitted to Trane Controls Engineering.
Local
Starter Failed to
Arm/Start
Chiller
Warning
Latch All
Starter failed to arm or start within the allotted time (2
minutes).
Remote
Starter Module
Memory Error Type
1
Chiller
Warning
Latch All
Checksum on RAM copy of the Starter LLID configuration
failed. Configuration recalled from EEPROM.
Local
Starter Module
Memory Error Type
2
Chiller Immediate Latch All
Checksum on EEPROM copy of the Starter LLID
configuration failed. Factor default values used.
Local
Unexpected Starter
Shutdown
Chiller Normal Nonlatch
All Cprsr Running
modes, Starting,
Running and
Preparing to
Shutdown
The Starter module status reported back that it is stopped
when it should be running and no Starter diagnostic exists.
This diagnostic will be logged in the active buffer and then
cleared.
NA
Diagnostics