RLC-SVX09Q-EN
85
Table 32. Main processor diagnostics (continued)
Diagnostic
Name
Affects Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
Starts/Hours
Modified - xy
Cprsr Warning
NonLatch All
The current value for the cumulative starts and or hours for
the given compressor have been modified by a write
override from TU in any running mode. The diagnostic will
only appear in the Historic Alarms list.
Remote
Suction
Refrigerant
Pressure Sensor
- xy
Cprsr
Immediate Latch All Bad Sensor or LLID. Remote
Suction
Temperature
Sensor
Circuit Immediate Latch All Bad Sensor or LLID. Remote
Very Low
Discharge
Superheat - xy
Circuit Normal Latch
Any Running
Mode
See Compressor Minimum Superheat Protection section in
the Oil Flow Protection spec for specific criteria. Generally,
this diagnostic indicates a likelihood of an evaporator
carryover (flooded evap) condition.
Remote
Very Low
Evaporator
Refrigerant
Pressure - xy
Chiller Immediate Latch All
The respective circuit’s evaporator pressure dropped below
80% of the current Low Evap Refrigerant Press Cutout
setting (see above) or 8 psia, whichever is less, regardless
of the running state of the circuit’s compressor. Note: Unlike
previous products, even if the circuit associated with the
suction pressure sensor is locked out, it will not defeat the
protection afforded by this diagnostic.
Local
Communication Diagnostics
Table 33. Communication diagnostics
Diagnostic
Name
Affects Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
Comm Loss: Fan
Inverter Fault
Circuit (fan
control)
Special Mode (or
in single fan
deck: Circuit
Immediate
shutdown)
Latch (or in
single fan deck:
Latch)
All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30-second period. Operate
the remaining fans as fixed speed fan deck. For single fan
deck configurations, this diagnostic causes a latching
circuit shutdown
Remote
Comm Loss: %
RLA Indication
Output(Vdc)
Chiller
Warning
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30-second period.
Remote
Comm Loss:
Compressor
Discharge Rfgt
Temperature - xy
Cprsr
Normal Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30-second period.
Remote
Diagnostics
To Next Page
Loading...
