Main Processor Diagnostics - Trane RTAF-SVX001K-EN Manual

Diagnostics

Main Processor Diagnostics

Table 33. Main processor diagnostics
Diagnostic Name
AFD%RLA Feedback - xA
Chiller Service Recommended
Compressor Discharge Refrigerant
Temperature Sensor - xy
Cprsr Disch Rfgt Temp Sensor - xy
Disch Rfgt Temp Sensor - xy
Condenser Refrigerant Pressure Sensor
Condenser Rfgt Pressure Sensor
Cond Rfgt Pressure Sensor
Emergency Stop Feedback Input
Emergency Stop
Evap Water Pump 1 Svc Recommended
Evap Water Pump 1 Svc Recom
Evap Water Pump 2 Svc Recommended
Evap Water Pump 2 Svc Recom
Evaporator Approach Error
Evaporator Entering Water Pressure
Evap Entering Water Pressure
Evaporator Entering Water Temperature
Sensor
Evaporator Entering Water Temp Sensor
Evap Ent Water Temp Sensor
Evaporator Isolation Valve Closed Switch
Failure
Evap Isolation Valve Closed Switch
Failure
Evap Iso Vlv Closed Sw Fail
Evaporator Isolation Valve Failed To
Close
Evap Isolation Valve Failed To Close
Evap Iso Vlv Failed To Close
Evaporator Isolation Valve Failed To Open
Evap Isolation Valve Failed To Open
Evap Iso Vlv Failed To Open
Evaporator Isolation Valve Illegal Switch
State
Evap Isolation Valve Illegal Switch State
Evap Iso Vlv Illegal Sw Stat
82
Affects
Severity Persistence
Target
Cprsr Normal Latch
Chiller Warning Latch
Cprsr Immediate Latch
Circuit Immediate Latch
Chiller Immediate Latch
Chiller Info Latch
Chiller Info Latch
Circuit Immediate Latch
Chiller Warning Latch
Chiller Normal Latch
Circuit Immediate Latch
Circuit Immediate Latch
Circuit Immediate Latch
Circuit Immediate Latch
Active
Modes
[Inactive
Modes]
All Out-Of-Range Low or Hi or bad LLID
Service
Chiller service interval time has elapsed.
Messages
Chiller service is recommended.
Enabled
All Bad Sensor or LLID
All Bad Sensor or LLID
EMERGENCY STOP FEEBBACK INPUT is
open. An external interlock has tripped.
All
Time to trip from input opening to unit stop
shall be 0.1 to 1.0 seconds.
Service
Pump service recommended as service
Messages
interval hours have elapsed.
Enabled
Service
Pump service recommended as service
Messages
interval hours have elapsed.
Enabled
The Evaporator approach temperature for
the respective circuit (ELWT – Evap Sat
Temp Ckt x) is negative by more than 10°F
Respective for 1 minute continuously while the circuit
circuit running / compressor is operating. Either the Evap
Leaving Water Temp sensor or Evap
Suction Rfgt Pressure Sensor Ckt x is in
error.
All Bad Sensor or LLID
Bad Sensor or LLID. Note: Entering Water
Temp Sensor is used in EXV pressure
All control as well as ice making so it must
cause a unit shutdown even if ice or CHW
reset is not installed.
Evaporator isolation valve open limit
switch state does not match expected
All
value. See Evaporator Isolation Valve spec
for details.
Evaporator isolation valve was
commanded to close, but limit switches did
All not make expected changes within allotted
time. See Evaporator Isolation Valve spec
for details.
Evaporator isolation valve was
commanded to open, but limit switches did
All not make expected changes within allotted
time. See Evaporator Isolation Valve spec
for details.
Both evaporator isolation valve limit
switches were closed at the same time,
All which should not be possible. Check for
limit switch failure or improperly adjusted
switch points.
Reset
Criteria
Level
Remote
Remote
Remote
Remote
Local
Remote
Remote
Remote
Remote
Remote
Local
Local
Local
Local
RTAF-SVX001K-EN