Installation and Maintenance Manual

Diagnostics
84 RTAE-SVX001B-EN
Software Error
1002: Call
Trane Service
All
functions
Immediate Latch All
Reported if state chart misalignment in stopped or inactive
state occurred while a compressor was seen to be operating
and this condition lasted for at least 1 minute (cmprsr operation
due to Service Pumpdown or with Contactor Interrupt Failure
diagnostic is excluded). The presence of this software error
message suggests an internal software problem has been
detected. The events that led up to this failure, if known, should
be recorded and transmitted to Trane Controls Engineering.
Local
Software Error
1003: Call
Trane Service
All
functions
Immediate Latch All
Reported if state chart misalignment occurred inferred from
either Capacity Control, Circuit, or Compressor State Machines
remaining in the Stopping state for more than 3 minutes. The
presence of this software error message suggests an internal
software problem has been detected. The events that led up to
this failure, if known, should be recorded and transmitted to
Trane Controls Engineering.
Local
Starts or Hours
Modified –
Cprsr1A
None Info NonLatch All
The current value for the cumulative starts and or hours for the
given compressor have been modified by a write override from
TU.
NA
Starts or Hours
Modified –
Cprsr2A
None Info NonLatch All
The current value for the cumulative starts and or hours for the
given compressor have been modified by a write override from
TU.
NA
Suction Rfgt
Pressure
Transducer –
Cprsr1A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Suction Rfgt
Pressure
Transducer –
Cprsr2A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Unexpected
Shutdown –
AFD1A
Circuit Normal Nonlatch
All Cprsr Running
modes, Starting,
Running and
Preparing to
Shutdown
The respective AFD status reported back that it is stopped when
the MP thinks it should be running and no AFD shutdown
diagnostic exists. This diagnostic will be logged in the active
buffer and then automatically cleared. This diagnostic could be
caused by intermittent communication problems from the AFD
to the MP, or due to misbinding.
Remote
Unexpected
Shutdown –
AFD2A
Circuit Normal Nonlatch
All Cprsr Running
modes, Starting,
Running and
Preparing to
Shutdown
The respective AFD status reported back that it is stopped when
the MP thinks it should be running and no AFD shutdown
diagnostic exists. This diagnostic will be logged in the active
buffer and then automatically cleared. This diagnostic could be
caused by intermittent communication problems from the AFD
to the MP, or due to misbinding.
Remote
Very Low
Evaporator Rfgt
Pressure – Ckt1
Chiller Immediate Latch All
The respective circuit’s evaporator pressure dropped below
80% of the current Low Evap Refrig Press Cutout setting (see
above) or 8 psia, whichever is less, regardless of the running
state of the circuit’s compressor. Note: Unlike previous
products, even if the circuit associated with the suction
pressure transducer is locked out, it will not defeat the
protection afforded by this diagnostic.
Local
Very Low
Evaporator Rfgt
Pressure – Ckt2
Chiller Immediate Latch All
The respective circuit’s evaporator pressure dropped below
80% of the current Low Evap Refrig Press Cutout setting (see
above) or 8 psia, whichever is less, regardless of the running
state of the circuit’s compressor. Note: Unlike previous
products, even if the circuit associated with the suction
pressure transducer is locked out, it will not defeat the
protection afforded by this diagnostic.
Local
Table 33. Main processor diagnostics (continued)
Diagnostic
Name
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level