Trane Ascend ACR C Series Installation, Operation And Maintenance Manual page 106

Diagnostics
Table 31. Diagnostics — main processor (continued)
Diagnostic
Affects Target
Name
Evaporator
Water Flow Chiller
Overdue
Evaporator
Water Pump Chiller
Fault
Evaporator
Water Pump
Chiller
Speed Feedback
Excessive
Condenser Circuit
Pressure
External Chilled
Chiller
Water Setpoint
External Demand
Chiller
Limit Setpoint
Fan Inverter
Circuit
Fault
Free Cooling
Free Cooling
Dedicated Fan
Inverter Fault
Free Cooling
Free
Entering Water
Cooling
Temperature
High
Compressor
Refrigerant Cprsr
Discharge Temp
- xy
High Differential
Refrigerant Cprsr
Pressure - xy
106
Severity
Persistence
Mode, or in Auto
Mode and No Ckt
Normal NonLatch
Immediate NonLatch
Warning
Latch
Immediate Latch
Warning
Latch
Warning
Latch
Warning
NonLatch
Warning
NonLatch
Normal Latch
[compressor run
Immediate Latch
Cprsr Energized
Normal Latch
Active Modes
[Inactive
Modes]
Unit in Stop Evaporator water flow was not proven within 20 minutes of
the Evaporator water pump relay being energized in normal
"Stop" to "Auto" transition. If the pump is overridden to "On"
(s) Energized for certain diagnostics, the delay on diagnostic callout shall
[Any Ckt be only 255 seconds. The pump command status will not be
Energized] effected by this diagnostic in either case.
For systems with a single variable-speed evaporator pump,
an immediate shutdown shall be performed, see
All
Evaporator_Water_Pump_Control.doc
All Bad Sensor or LLID
The condenser pressure sensor of this circuit has detected
a condensing pressure in excess of the design high side
All
pressure as limited by the particular compressor type.
A. Function Not "Enabled": no diagnostics.
B. "Enabled ": Out-Of-Range Low or Hi or bad LLID, set
All
diagnostic, default CWS to next level of priority (e.g. Front
Panel SetPoint).
A. Not "Enabled": no diagnostics.
B. "Enabled ": Out-Of-Range Low or Hi or bad LLID, set
All
diagnostic, default CLS to next level of priority (e.g. Front
Panel SetPoint.)
A fault signal has been detected from at least one of the
Variable Speed Inverter Drive Condenser Fans of Circuit 1
or 2 (including the right hand fan of the Shared Fan Module
if present).
All
Starting in build after 4/5/2023, the fault signal must be
faulted for at least 150sec (adjustable) continuously before
this diagnostic is triggered.
No action is taken.
A fault signal has been detected from at least one of the
Free Cooling Dedicated Fan Variable Speed Inverter Drive.
Starting in build after 4/5/2023, the fault signal must be
All
faulted for at least 150sec (adjustable) continuously before
this diagnostic is triggered.
No action is taken.
All Bad Sensor or LLID.
The compressor discharge temperature exceeded 199.4°F
(without oil cooler) or 230°F (with oil cooler). This diagnostic
All
will be suppressed during Stopping mode or after the
compressor has stopped. Note: As part of the Compressor
unload or
High Temperature Limit Mode (aka Minimum Capacity
compressor not
Limit), the compressor shall be forced loaded as the filtered
running]
discharge temperature reaches 190°F (without oil coolers),
or 220°F (with oil coolers).
GP2 Cprsr: The differential pressure for the respective
circuit was above 275 Psid (1890 kPa) for 2 consecutive
samples 5 seconds apart.
Criteria
AC-SVX003A-EN
Reset
Level
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote