76
RLC-SVX09Q-EN
Table 32. Main processor diagnostics (continued)
Diagnostic
Name
Affects Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
Compressor
Discharge
Refrigerant
Temperature
Sensor - xy
Cprsr
Immediate Latch All Bad Sensor or LLID Remote
Condenser
Entering Water
Temperature
Sensor
Chiller
Warning and
Special Action
Latch All
Bad Sensor or LLID. If chiller running, and condenser water
regulating valve option installed, force valve to 100% flow.
Remote
Condenser
Leaving Water
Temperature
Sensor
Chiller
Warning and
Special Action
Latch All
Bad Sensor or LLID. If Chiller is running in the heat mode of
operation – normal chiller shutdown, otherwise,
informational warning only. Discontinue Min Capacity Limit
forced cprsr loading due to Low DP in subsequent start-
ups.
Remote
Condenser
Refrigerant
Pressure Sensor
Circuit Immediate Latch All Bad Sensor or LLID Remote
Condenser
Water Flow Lost
Chiller Immediate NonLatch
Cond Water
Flow Previously
Established –
Start and all Run
Modes
[All Stop modes]
The Condenser water flow proof input was open for more
than 6 contiguous seconds after flow had been proven. In
Normal Cooling or Ice Building Mode, the Cond Pump is
commanded off and this diagnostic is automatically cleared
once the compressor is stopped by a fixed time out of 7
seconds. This diagnostic may stop the Evaporator Pump
pursuant to other possible diagnostic overrides. In the
Heating Mode, this diagnostic does not affect the Cond
Pump output and 6 seconds of flow will auto-reset the
diagnostic.
Remote
Condenser
Water Flow
Overdue
Chiller Normal NonLatch
Start Sequence
Attempting to
Establish
Condenser Flow
[All Stop modes]
Condenser water flow was not proven within 20 minutes of
the Condenser Water Pump relay being energized. The
Cond Pump shall be commanded off in Cooling and Ice
Building modes, and remain on in the.Heating Mode. The
diagnostic is auto-reset with return of flow (although only
possible with external control of pump). This diagnostic will
generally also stop the Evaporator Pump pursuant to other
possible diagnostic overrides.
Remote
Emergency Stop
Feedback Input
Chiller Immediate Latch All
a. Emergency stop feedback input is open. An external
interlock has tripped. Time to trip from input opening to unit
stop shall be 0.1 to 1.0 seconds.
Local
Energy Meter
Write Value
Failure
Chiller
Warning
Latch All
Energy meter failed to return the expected value.
(Note: Only applies to Trane Enercept Flex Modbus Energy
Meter)
Remote
Diagnostics
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