Trane R Series

Diagnostics
RTAC-SVX01J-EN 159
Low Oil Flow -
Compressor 2A
Cprsr Immediate Latch
Cprsr Energized
and Delta P above
35 Psid
The intermediate oil pressure transducer for this compressor
was out of the acceptable pressure range for 15 seconds, while
the Delta Pressure was greater than 35Psid.: Acceptable range
is 0.50 > (PC-PI) / (PC-PE) for the first 2.5 minutes of operation,
and 0.25 > (PC-PI) / (PC-PE) thereafter,,.
Local
Low Oil Flow -
Compressor 2B
Cprsr Immediate Latch
Cprsr Energized
and Delta P above
35 Psid
The intermediate oil pressure transducer for this compressor
was out of the acceptable pressure range for 15 seconds, while
the Delta Pressure was greater than 35 Psid.: Acceptable range
is 0.50 > (PC-PI) / (PC-PE) for the first 2.5 minutes of operation,
and 0.25 > (PC-PI) / (PC-PE) thereafter,
Local
Low Suction
Refrigerant Pressure
- Circuit 1
Circuit Immediate Latch
Cprsr Prestart and
Cprsr Energized
a. The Suction Refrigerant Pressure (or either of the compressor
suction pressures) dropped below 10 Psia just prior to
compressor start (after EXV preposition). b. The pressure fell
below 16 Psia while running after the ignore time had expired,
or fell below 10 Psia (or 5 Psia in sftw prior to Oct'02) before the
ignore time had expired. The ignore time is function of outdoor
air temperature. Note: Part b. is identical to Low Evaporator
Refrigerant Temperature diagnostic except for the trip integral
and trip point settings.
Local
Low Suction
Refrigerant Pressure
- Circuit 2
Circuit Immediate Latch
Cprsr Prestart and
Cprsr Energized
a. The Suction Refrigerant Pressure (or either of the compressor
suction pressures) dropped below 10 Psia just prior to
compressor start (after EXV preposition). b. The pressure fell
below 16 Psia while running after the ignore time had expired,
or fell below 10 Psia (or 5 Psia in sftw prior to Oct'02) before the
ignore time had expired. The ignore time is function of outdoor
air temperature. Note: Part b. is identical to Low Evaporator
Refrigerant Temperature diagnostic except for the trip integral
and trip point settings.
Local
Low Suction
Refrigerant Pressure
- Cprsr 1B
Circuit Immediate Latch
Cprsr Prestart and
Cprsr Energized
a. The Suction Refrigerant Pressure (or either of the compressor
suction pressures) dropped below 10 Psia just prior to
compressor start (after EXV preposition). b. The pressure fell
below 16 Psia while running after the ignore time had expired,
or fell below 10 Psia (or 5 Psia in sftw prior to Oct'02) before the
ignore time had expired. The ignore time is function of outdoor
air temperature. Note: Part b. is identical to Low Evaporator
Refrigerant Temperature diagnostic except for the trip integral
and trip point settings.
Local
Low Suction
Refrigerant Pressure
- Cprsr 2B
Circuit Immediate Latch
Cprsr Prestart and
Cprsr Energized
a. The Suction Refrigerant Pressure (or either of the compressor
suction pressures) dropped below 10 Psia just prior to
compressor start (after EXV preposition). b. The pressure fell
below 16 Psia while running after the ignore time had expired,
or fell below 10 Psia (or 5 Psia in sftw prior to Oct'02) before the
ignore time had expired. The ignore time is function of outdoor
air temperature. Note: Part b. is identical to Low Evaporator
Refrigerant Temperature diagnostic except for the trip integral
and trip point settings.
Local
MP Application
Memory CRC Error
Chiller Immediate Latch All Modes Memory error criteria TBD Remote
MP: Could not Store
Starts and Hours
None Info Latch All
MP has determined there was an error with the previous power
down store. Starts and Hours may have been lost for the last 24
hours.
Remote
MP: Invalid
Configuration
None Immediate Latch All
MP has an invalid configuration based on the current software
installed
Remote
MP: Non-Volatile
Block Test Error
None Info Latch All
MP has determined there was an error with a block in the Non-
Volatile memory. Check settings.
Remote
MP: Non-Volatile
Memory Reformat
None Info Latch All
MP has determined there was an error in a sector of the Non-
Volatile memory and it was reformatted. Check settings.
Remote
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,
installing new software or configuration. This diagnostic is
immediately and automatically cleared and thus can only be
seen in the Historic Diagnostic List in TechView
Remote
Oil Flow Fault -
Compressor 1A
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
Table 67. Main processor diagnostics (continued)
Diagnostic Name
Affects
Target Severity
Persist-
ence
Active Modes
[Inactive
Modes] Criteria
Reset
Level