Installation and Maintenance Manual

Diagnostics
200 RLC-SVX09H-EN
Excessive Condenser
Pressure – Circuit 2
Circuit Immediate Latch All
The condenser pressure transducer of this
circuit has detected a pressure in excess of the
safe high side pressure as limited by the
particular compressor type or the evaporator
distributor present on this particular chiller. For
Air Cooled Condenser, check for dirty coils or
any fouling or restrictions as well as proper
operation and rotational direction of all fans.
Remote
External Chilled (Hot
Water Setpoint
None Info Latch All
a. Function Not “Enabled”: no diagnostics. B.
“Enabled “: Out-Of-Range Low or Hi or bad
LLID, set diagnostic, default CWS to next level
of priority (e.g. Front Panel SetPoint). This Info
diagnostic will automatically reset if the input
returns to the normal range.
Remote
External Current Limit
Setpoint
None Info Latch All
a. Not “Enabled”: no diagnostics. B. “Enabled “:
Out-Of-Range Low or Hi or bad LLID, set
diagnostic, default CLS to next level of priority
(e.g. Front Panel SetPoint. This Info diagnostic
will automatically reset if the input returns to
the normal range.
Remote
Fan Fault - Circuit 1
Circuit (fan
control)
Special Mode
(or in single
fan deck:
Circuit
Immediate
shutdown
NonLatch (or in
single fan
deck:Latch)
Prestart and
Running w/Low
Ambient Variable
Spd Fan configured
A fault signal has been detected from the
respective condenser’s Variable Speed
Inverter Drive (fan). Condenser Fan control will
revert to constant speed operation without the
use of the inverter’s fan. If the inverter’s fault
clears, fan control will switch back to variable
speed. For single fan deck configurations, this
diagnostic causes a latching circuit shutdown.
Fan Fault - Circuit 2
Circuit (fan
control)
Special Mode
(or in single
fan deck:
Circuit
Immediate
shutdown
NonLatch (or in
single fan
deck:Latch)
Prestart and
Running w/Low
Ambient Variable
Spd Fan configured
A fault signal has been detected from the
respective condenser’s Variable Speed
Inverter Drive (fan). Condenser Fan control will
revert to constant speed operation without the
use of the inverter’s fan. If the inverter’s fault
clears, fan control will switch back to variable
speed. For single fan deck configurations, this
diagnostic causes a latching circuit shutdown.
High Differential
Refrigerant Pressure -
Circuit 1
Circuit Normal Latch Cprsr Energized
High Vi Cprsr: The differential pressure for the
respective circuit was above 275 Psid (1890
kPa) for 2 consecutive samples or more than 10
seconds.
Low Vi Cprsr: The system differential
pressure was above 188 Psid (1296.4 kPa) - for
2 consecutive samples or more than 10
seconds.
Remote
High Differential
Refrigerant Pressure -
Circuit 2
Circuit Normal Latch Cprsr Energized
High Vi Cprsr: The differential pressure for the
respective circuit was above 275 Psid (1890
kPa) for 2 consecutive samples or more than 10
seconds.
Low Vi Cprsr: The system differential
pressure was above 188 Psid (1296.4 kPa) - for
2 consecutive samples or more than 10
seconds.
Remote
High Discharge
Temperature –
Compressor 1A
Circuit Immediate Latch
All
[compressor run
unload or
compressor not
running]
The compressor discharge temperature exceeded
200F (without oil cooler) or 230ºF (with oil cooler).
This diagnostic will be suppressed during Run-Unload
or after the compressor has stopped. Note: As part of
the Compressor High Temperature Limit Mode (aka
Minimum Capacity Limit), the compressor shall be
forced loaded as the filtered discharge temperature
reaches 190ºF(without oil coolers), or 220ºF (with oil
coolers).
Remote
Table 134. Main Processor Diagnostics (continued)
Diagnostic Name
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level