Installation and Maintenance Manual

Diagnostics
RTAE-SVX001B-EN 83
MP: Reset Has
Occurred
None Info NonLatch All
The main processor has successfully come out of a reset and
built its application. A reset may have been due to a power up,
or a power loss of a minimum or longer duration to cause an
MP power down reset, or when installing new software or
defining a new configuration. This diagnostic is immediately
and automatically cleared and thus can only be seen in the
Historic Diagnostic List in TU.
Remote
No Differential
Rfgt Pressure –
Ckt1
Circuit Immediate Latch
Compressor
running on
Circuit
The system differential pressure was below 7.7 Psid (53 kPa)
for 6 seconds after the 11 seconds ignore time relative to cprsr/
circuit startup had expired.
Remote
No Differential
Rfgt Pressure –
Ckt2
Circuit Immediate Latch
Compressor
running on
Circuit
The system differential pressure was below 7.7 Psid (53 kPa)
for 6 seconds after the 11 seconds ignore time relative to cprsr/
circuit startup had expired.
Remote
Oil Analysis
Recommended
– Ckt1
Circuit Info Latch
“Service
Messages”
enabled
Diagnostic occurs when accumulated circuit operating hours
since last initialized exceeds 2000 hours. Diagnostic can be
manually cleared but will reoccur every month (720 hours on
real time clock) as long as accumulator is not re-initialized.
Remote
Oil Analysis
Recommended
– Ckt2
Circuit Info Latch
“Service
Messages”
enabled
Diagnostic occurs when accumulated circuit operating hours
since last initialized exceeds 2000 hours. Diagnostic can be
manually cleared but will reoccur every month (720 hours on
real time clock) as long as accumulator is not re-initialized.
Remote
Oil Filter
Change
Recommended
– Cprsr1A
Circuit Info Latch
“Service
Messages”
enabled
Diagnostic occurs only when “service messages” are enabled
and when average oil pressure drop exceeds 18%. Diagnostic
can be manually cleared but will reoccur every month (720
hours on real time clock) as long as average pressure drop does
not fall below 16%.
Remote
Oil Filter
Change
Recommended
– Cprsr2A
Circuit Info Latch
“Service
Messages”
enabled
Diagnostic occurs only when “service messages” are enabled
and when average oil pressure drop exceeds 18%. Diagnostic
can be manually cleared but will reoccur every month (720
hours on real time clock) as long as average pressure drop does
not fall below 16%.
Remote
Oil Flow
Protection Fault
– Ckt 1
Circuit Immediate Latch
Starter
Contactor
Energized [all
Stop modes]
The Intermediate Oil Pressure Transducer for this cprsr is
reading a pressure either above its respective circuit’s
Condenser Pressure by 15 Psia or more, or below its respective
Suction Pressure 10 Psia or more for 30 seconds continuously.
Local
Oil Flow
Protection Fault
– Ckt2
Circuit Immediate Latch
Starter
Contactor
Energized [all
Stop modes]
The Intermediate Oil Pressure Transducer for this cprsr is
reading a pressure either above its respective circuit’s
Condenser Pressure by 15 Psia or more, or below its respective
Suction Pressure 10 Psia or more for 30 seconds continuously.
Local
Oil Pressure
Transducer –
Cprsr1A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Oil Pressure
Transducer –
Cprsr2A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Outdoor Air
Temperature
Sensor
Chiller
Normal
Shutdown;
Latch All
Bad Sensor or LLID. If this diagnostic occurs, operational
pumpdown will be performed regardless of the last valid
temperature.
Remote
Pumpdown
Terminated -
Ckt1
Circuit Info NonLatch
Service
Pumpdown
Service Pumpdown cycle for this circuit was terminated
abnormally due to excessive time.(RTAE max Service
Pumpdown = 4 min).
Local
Pumpdown
Terminated -
Ckt2
Circuit Info NonLatch
Service
Pumpdown
Service Pumpdown cycle for this circuit was terminated
abnormally due to excessive. (RTAE max Service Pumpdown =
4 min).
Local
Software Error
1001: Call
Trane Service
All
functions
Immediate Latch All
A high level software watchdog has detected a condition in
which there was a continuous 1 minute period of compressor
operation, with neither Evaporator water flow nor a” contactor
interrupt failure” diagnostic active. 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
Table 33. Main processor diagnostics (continued)
Diagnostic
Name
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level