Trane R Series Installation, Operation And Maintenance Manual page 157

Diagnostics
Table 67. Main processor diagnostics (continued)
Affects
Diagnostic Name Target Severity
High Oil
Temperature - Cprsr 1A Immediate
Compressor 1A
High Oil
Temperature - Cprsr 2A Immediate
Compressor 2A
High Pressure
Cutout - Circuit Immediate
Compressor 1A
High Pressure
Cutout - Circuit Immediate
Compressor 1B
High Pressure
Cutout - Circuit Immediate
Compressor 2A
High Pressure
Cutout - Circuit Immediate
Compressor 2B
Intermediate Oil
Pressure Transducer Cprsr 1A Immediate
- Compressor 1A
Intermediate Oil
Pressure Transducer Cprsr 1B Immediate
- Compressor 1B
Intermediate Oil
Pressure Transducer Cprsr 2A Immediate
- Compressor 2A
Intermediate Oil
Pressure Transducer Cprsr 2B Immediate
- Compressor 2B
Low Chilled Water Evap
Temp: Unit Off Pump
Low Chilled Water
Chiller
Temp: Unit On
Low Differential
Refrigerant Pressure Circuit Immediate
- Circuit 1
Low Differential
Refrigerant Pressure Circuit Immediate
- Circuit 2
RTAC-SVX01J-EN
Active Modes
Persist- [Inactive
ence Modes]
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Unit in Stop Mode,
or in Auto Mode
Special
NonLatch and No Ckt(s)
Mode
Energzd
[Any Ckt Energzd]
Immediate Any Ckt[s]
and Energzd
NonLatch
Special [No Ckt(s)
Mode Energzd]
Latch Cprsr Energized
Latch Cprsr Energized
The respective oil temperature as supplied to the compressor,
exceeded 200 F for 2 consecutive samples or for over 10
seconds. Note: As part of the Compressor High Temperature
All Limit Mode (aka Minimum Limit), the running compressor's
female load step will be forced loaded when its oil temperature
exceeds 190F and returned to normal control when the oil
temperature falls below 170 F.
The respective oil temperature as supplied to the compressor,
exceeded 200 F for 2 consecutive samples or for over 10
seconds. Note: As part of the Compressor High Temperature
All Limit Mode (aka Minimum Limit), the running compressor's
female load step will be forced loaded when its oil temperature
exceeds 190F and returned to normal control when the oil
temperature falls below 170 F.
A high pressure cutout was detected on Compressor 1A; trip at
315 ± 5 PSIG. Note: Other diagnostics that may occur as an
All expected consequence of the HPC trip will be suppressed from
annunciation. These include Phase Loss, Power Loss, and
Transition Complete Input Open.
A high pressure cutout was detected on Compressor 1A; trip at
315 ± 5 PSIG. Note: Other diagnostics that may occur as an
All expected consequence of the HPC trip will be suppressed from
annunciation. These include Phase Loss, Power Loss, and
Transition Complete Input Open.
A high pressure cutout was detected on Compressor 1A; trip at
315 ± 5 PSIG. Note: Other diagnostics that may occur as an
All expected consequence of the HPC trip will be suppressed from
annunciation. These include Phase Loss, Power Loss, and
Transition Complete Input Open.
A high pressure cutout was detected on Compressor 1A; trip at
315 ± 5 PSIG. Note: Other diagnostics that may occur as an
All expected consequence of the HPC trip will be suppressed from
annunciation. These include Phase Loss, Power Loss, and
Transition Complete Input Open.
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
The leaving Evaporator water temp. fell below the leaving water
temp cutout setting for 30 degree F seconds while the Chiller is
in the Stop mode, or in Auto mode with no compressors running.
Energize Evap Water pump Relay until diagnostic auto resets,
then return to normal evap pump control. Automatic reset
occurs when the temp rises 2 F (1.1 C) above the cutout setting
for 30 minutes.
The evaporator water temp. fell below the cutout setpoint for 30
degree F Seconds while the compressor was running. Automatic
reset occurs when the temperature rises 2 F (1.1 C) above the
cutout setting for 2 minutes. This diagnostic shall not de-
energize the Evaporator Water Pump Output.
The system differential pressure for the respective circuit was
below 35 Psid for more than 2000 Psid-sec with either a 1 minute
(single cprsr circuit) or 2.5 minute (manifolded cprsr circuit)
ignore time from the start of the circuit.
The system differential pressure for the respective circuit was
below 35 Psid for more than 2000 Psid-sec with either a 1 minute
(single cprsr circuit) or 2.5 minute (manifolded cprsr circuit)
ignore time from the start of the circuit.
Criteria
Reset
Level
Remote
Remote
Local
Local
Local
Local
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
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