CG-SVU02C-E442
Main Processor Diagnostics
Diagnostic Name
Affects
Ta r g e t
Severity Persistence
Active Modes
[Inactive Modes]
Criteria Reset Level
High Pressure
Cutout -
Compressor 1A
Circuit Immediate
Latch
All A high pressure cutout was detected on Compressor
1A; trip at 270 ± 5 PSIG. Note: Other diagnostics that
may occur as an expected consequence of the HPC trip
will be suppressed from annunciation. These include
Phase Loss, Power Loss, and Transition Complete Input
Open. For Air Cooled Condenser, check for dirty coils or
any fouling or restrictions as well as proper operation
and rotational direction of all fans..
Local
High Pressure
Cutout -
Compressor 2A
Circuit Immediate
Latch
All A high pressure cutout was detected on Compressor
1A; trip at 270 ± 5 PSIG. Note: Other diagnostics that
may occur as an expected consequence of the HPC trip
will be suppressed from annunciation. These include
Phase Loss, Power Loss, and Transition Complete Input
Open. For Air Cooled Condenser, check for dirty coils or
any fouling or restrictions as well as proper operation
and rotational direction of all fans..
Local
Excessive
Condenser Pressure
- Circuit 1
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
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
Emergency Stop
Chiller Immediate Latch All
a. EMERGENCY STOP input is open. An external
interlock has tripped. Time to trip from input opening
to unit stop shall be 0.1 to 1.0 seconds.
Local
Outdoor Air
Temperature
Sensor
Chiller
RTUD with
ACFC#NONE-
Normal
Shutdown;
OATS=INST-
Special Action
Latch
Latch All
Bad Sensor or LLID. If the outdoor temperature is
used for CHW reset, there shall be no CHW reset.
Apply slew rates per Chilled Water Reset spec. RTUD:
if this diagnostic occurs, operational pumpdown will
be performed regardless of the last valid temperature.
For RTWD, if installed for low ambient lockout, there
shall be no LA lockout .
Remote
Starter Panel High
Temperature Limit
- Compressor 1A
Circuit
Immediate
and Special
Action
NonLatch All
Starter Panel High Limit Thermostat (170°F) trip was
detected. Compressor 1A is shutdown and inoperative
until the thermostat resets. Note: Other diagnostics
that may occur as an expected consequence of the
Panel High Temp Limit trip will be suppressed from
annunciation. These include Momentary Power Loss,
Phase Loss, Power Loss, and Transition Complete
Input for Compressor 1A.
Local
Starter Module
Memory Error Type
1Starter 1A
None Info
Latch
All Checksum on RAM copy of the Starter LLID
configuration failed. Configuration recalled from
EEPROM.
Local
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