Table of Contents
Advertisement
Diagnostics
Table 33. Main processor diagnostics (continued)
Diagnostic Name
Evaporator Refrigerant Pool Temperature
Sensor
Evap Rfgt Pool Temp Sensor
Evap Rfgt Pool Temp Sensor
Evaporator Shell Refrigerant Pressure
Sensor
Evaporator Shell Rfgt Pressure Sensor
Evap Shell Rfgt Press Sensor
Evaporator Water Flow Lost – Pump 1
Evap Water Flow Lost Pump 1
Evaporator Water Flow Lost – Pump 2
Evap Water Flow Lost Pump 2
Evaporator Water Flow Lost
Evap Water Flow Lost
Evaporator Water Flow Overdue –
Pump 1
Evap Wtr Flow Overdue Pump 1
Evaporator Water Flow Overdue – Pump
2
Evap Wtr Flow Overdue Pump 2
Evaporator Water Flow Overdue
Evap Water Flow Overdue
84
Affects
Severity Persistence
Target
Warning
Circuit
and Special
Latch
Action
Circuit
Normal
Latch
Warning
Chiller
and Special
NonLatch
Action
Warning
Chiller
and Special
NonLatch
Action
Chiller
Immediate
NonLatch
Warning
Chiller
and Special
NonLatch
Action
Warning
Chiller
and Special
NonLatch
Action
Chiller
Normal
NonLatch
Active
Modes
[Inactive
Modes]
Bad Sensor or LLID. Note: The Evap Pool
Temp Sensors are used for evaporator
freeze protection (running and non-
running). Invalidate evaporator pool
temperature sensor measurement if this
diagnostic is active. If evaporator isolation
All
valves are installed, revert to Evaporator
Shell Refrigerant Saturated Temperature
for freeze protection functions. If
evaporator isolation valves are not
installed, revert to Evaporator Saturated
Temperature for freeze protection
functions.
Bad Sensor or LLID. Note: The evaporator
shell refrigerant pressure sensor is used to
avoid high shell pressures, to equalize
All
evaporator and condenser pressure prior
to circuit start, and as a backup sensor to
the pool temperature sensor.
For dual evaporator pump configurations
only. Evaporator Water Flow Lost
diagnostic occurred while Pump 1 was the
All
selected pump. Specific details of special
action are described in
Evaporator_Water_Pump_Control.doc
For dual evaporator pump configurations
only. Evaporator Water Flow Lost
diagnostic occurred while Pump 2 was the
All
selected pump. Specific details of special
action are described in
Evaporator_Water_Pump_Control.doc
A. The Evaporator water flow switch input
was open for more than 6 contiguous
seconds (or 20 seconds for thermal
[All Stop
dispersion type flow switch). B. This
modes]
diagnostic does not de-energize the evap
pump output. C. 6 seconds of contiguous
flow shall clear this diagnostic.
After the pump request was activated, the
evaporator water flow overdue wait time
elapsed before water flow was established.
All
Special action is to keep the evap pump
request active in a diagnostic override
mode. See
Evaporator_Water_Pump_Control.doc
After the pump request was activated, the
evaporator water flow overdue wait time
elapsed before water flow was established.
All
Special action is to keep the evap pump
request active in a diagnostic override
mode. See
Evaporator_Water_Pump_Control.doc
Evaporator water flow was not proven
within 20 minutes of the Evaporator water
Estab. Evap.
pump relay being energized in normal
Water Flow on
"Stop" to "Auto" transition. If the pump is
going from
overridden to "On" for certain diagnostics,
STOP to AUTO
the delay on diagnostic callout shall be
or Evap Pump
only 255 seconds. The pump command
Override.
status will not be effected by this
diagnostic in either case.
Reset
Criteria
Level
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
RTAF-SVX001K-EN
Advertisement
Table of Contents
