Sensor Failure Diagnostic - Trane Ascend ACS 140 Installation, Operation And Maintenance Manual

D D i i a a g g n n o o s s t t i i c c s s

Sensor Failure Diagnostic

N N o o t t e e s s : :
1. The following sensor failure diagnostics will
not occur unless that input or output is
required to be present by the particular
configuration and installed options for the
chiller.
2. Sensor diagnostics are named by the
Functional Name of the input or output that
Table 30. Sensor failure diagnostics
Affects
Diagnostic
Target
Name
Evaporator
Entering Water
Chiller
Temp Sensor
Evaporator
Leaving Water
Chiller
Temp Sensor
Outdoor Air
Chiller
Temp Sensor
Discharge
Pressure Circuit
Transducer
Suction
Pressure Circuit
Transducer
Suction
Temperature Circuit
Sensor
Discharge
Temperature Circuit
Sensor
Liquid Line
Pressure Circuit
Transducer
SLHX Entering
Circuit
Temp Sensor
78
Severity
Persistence
Normal Latch
Normal Latch
Normal Latch
Immediate Latch
Immediate Latch
Immediate Latch
Immediate Latch
Normal Latch
Normal Latch
is no longer sending a valid value to the
Main Processor, indicating a sensor failure.
Some LLIDs may have more than one
functional output associated with it. Refer to
the unit's wiring diagrams to relate the
occurrence of such sensor failure
diagnostics back to the physical LLID boards
that they have been assigned to (bound).
Active
Modes
[Inactive
Modes]
All
All
All
All [Ckt/Cprsr
lock out]
All [Ckt/Cprsr
lock out]
All [Ckt/Cprsr
lock out]
All [Ckt/Cprsr
lock out]
All [Ckt/Cprsr
lock out]
All [Ckt lock
out]
Criteria
Bad Sensor or LLID.
Bad Sensor or LLID
Bad Sensor or LLID.
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
AC-SVX002D-EN
Reset
Level
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote