Sterling 30RA010-055 manual Alarm and Alert Codes cont

Page 54

Table 29 — Alarm and Alert Codes (cont)

ALARM/

ALARM

 

WHY WAS THIS

ACTION TAKEN

RESET

PROBABLE

ALERT

OR

DESCRIPTION

ALARM

BY CONTROL

METHOD

CAUSE

CODE

ALERT

 

GENERATED?

 

 

 

 

 

 

 

 

 

 

 

T093

Alert

Circuit B Suction

Voltage ratio more than

Circuit B shut down

Automatic

Transducer failure, poor

 

 

Pressure Transducer

99.9% or less than .5%.

 

 

connection to MBB, or wiring

 

 

Failure

 

 

 

damage/error.

T110

Alert

Circuit A Loss of Charge

If the compressors are off

Circuit not allowed to

Manual

Refrigerant leak or

 

 

 

and discharge pressure

start.

 

transducer failure

 

 

 

reading is < 10 psig for

 

 

 

 

 

 

30 sec.

 

 

 

 

 

 

 

 

 

 

T111

Alert

Circuit B Loss of Charge

If the compressors are off

Circuit not allowed to

Manual

Refrigerant leak or

 

 

 

and discharge pressure

start.

 

transducer failure

 

 

 

reading is < 10 psig for

 

 

 

 

 

 

30 sec.

 

 

 

 

 

 

 

 

 

 

T112

Alert

Circuit A High Saturated

Circuit saturated suction

Circuit shut down

Manual

Faulty Expansion valve,

 

 

Suction Temperature

temperature pressure

 

 

faulty suction pressure

 

 

 

transducer > 60 F (15.6 C)

 

 

transducer or high entering

 

 

 

for 5 minutes

 

 

fluid temperature.

T113

Alert

Circuit B High Saturated

Circuit saturated suction

Circuit shut down

Manual

Faulty Expansion valve,

 

 

Suction Temperature

temperature pressure

 

 

faulty suction pressure

 

 

 

transducer > 60 F (15.6 C)

 

 

transducer or high entering

 

 

 

for 5 minutes

 

 

fluid temperature.

T114

Alert

Circuit A Low Suction

Return gas sensor enabled

Circuit A shut down after

Automatic restart

Faulty expansion valve,

 

 

Superheat

and suction superheat is

pumpdown complete.

after first daily

faulty suction pressure

 

 

 

more than 10° F (5.6 C)

 

occurrence.

transducer, faulty suction gas

 

 

 

below the suction superheat

 

Manual restart

thermistor, circuit

 

 

 

set point for 5 minutes.

 

thereafter.

overcharged

T115

Alert

Circuit B Low Suction

Return gas sensor enabled

Circuit B shut down after

Automatic restart

Faulty expansion valve,

 

 

Superheat

and suction superheat is

pumpdown complete.

after first daily

faulty suction pressure

 

 

 

more than 10° F (5.6 C)

 

occurrence.

transducer, faulty suction

 

 

 

below the suction superheat

 

Manual restart

gas thermistor, circuit

 

 

 

set point for 5 minutes.

 

thereafter.

overcharged

T116

Alert

Circuit A Low Cooler

Mode 7 caused the com-

Circuit shut down

Manual

Faulty expansion valve, low

 

 

Suction Temperature

pressor to unload 6 consecu-

 

 

refrigerant charge, plugged

 

 

 

tive times with less than a

 

 

filter drier, faulty suction

 

 

 

30-minute interval between

 

 

pressure transducer, low

 

 

 

each circuit shutdown.

 

 

cooler fluid flow

T117

Alert

Circuit B Low Cooler

Mode 8 caused the com-

Circuit shut down

Manual

Faulty expansion valve, low

 

 

Suction Temperature

pressor to unload 6 consecu-

 

 

refrigerant charge, plugged

 

 

 

tive times with less than a

 

 

filter drier, faulty suction

 

 

 

30-minute interval between

 

 

pressure transducer, low

 

 

 

each circuit shutdown.

 

 

cooler fluid flow

T126

Alert

Circuit A High

SCT >Maximum condensing

Circuit shut down

Automatic, only

Faulty transducer/high

 

 

Discharge Pressure

temperature from operating

 

after first 3 daily

pressure switch, low/

 

 

 

envelope

 

occurrences.

restricted condenser

 

 

 

 

 

Manual reset

airflow

 

 

 

 

 

thereafter. Read-

 

 

 

 

 

 

ing from OAT sen-

 

 

 

 

 

 

sor (T9) must drop

 

 

 

 

 

 

5 F (2.8 C) before

 

 

 

 

 

 

restart

 

T127

Alert

Circuit B High

SCT >Maximum condensing

Circuit shut down

Automatic, only

Faulty transducer/high

 

 

Discharge Pressure

temperature from operating

 

after first 3 daily

pressure switch, low/

 

 

 

envelope

 

occurrences. Man-

restricted condenser

 

 

 

 

 

ual reset thereafter.

airflow

 

 

 

 

 

Reading from OAT

 

 

 

 

 

 

sensor (T9) must

 

 

 

 

 

 

drop 5 F (2.8 C)

 

 

 

 

 

 

before restart

 

T133

Alert

Circuit A Low Suction

Suction pressure below

Circuit shut down

Automatic

Faulty or plugged TXV, low

 

 

Pressure

15 psig for 8 seconds or

 

restart after first

refrigerant charge, TXV out

 

 

 

below 8 psig

 

daily occurrence.

of adjustment, liquid

 

 

 

 

 

Manual restart

line valve partially closed

 

 

 

 

 

thereafter.

 

T134

Alert

Circuit B Low Suction

Suction pressure below

Circuit shut down

Automatic

Faulty or plugged TXV, low

 

 

Pressure

15 psig for 8 seconds or

 

restart after first

refrigerant charge, TXV out

 

 

 

below 8 psig

 

daily occurrence.

of adjustment, liquid

 

 

 

 

 

Manual restart

line valve partially closed

 

 

 

 

 

thereafter.

 

54

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Contents SAFETY CONSIDERATIONS CONTENTS GENERALSterlco Comfort Network SCN Interface — MAJOR SYSTEM COMPONENTSControl Module Communication Table 1 — Unit SizesTable 2 — Thermistor Designations Table 3 — Status SwitchesTable 5 - SCN Communication Bus Wiring Table 4 - Output RelaysLEGEND FOR FIG. Page Page Fig. 3 — Wiring Schematic 30RA010-018 30RA010-018AQUA SNAPAQUA-SNAPLOW VOLTAGE CONTROL SCHEMATIC Fig. 3 - Wiring Schematic 30RA010-018contSEE NOTE SEE NOTE Fig. 4 - Wiring Schematic 30RA022-030 30RA022-030AQUA SNAPFig. 4 - Wiring Schematic 30RA022-030cont AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICFig. 5 — Wiring Schematic 30RA032-040 30RA032-040AQUA SNAPFig. 5 — Wiring Schematic 30RA032-040cont AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICFig. 6 — Wiring Schematic 30RA042-055 30RA042-055AQUA SNAPFig. 6 — Wiring Schematic 30RA042-055cont AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICREMOTE CONTACT SW1 OFF ENABLE OFF SW2 ON Fig. 7 — Main Base BoardESCAPEENTER MODEFig. 9 — Typical Space Temperature Sensor Wiring Fig. 11 - Energy Management Module CEPL130351100/100 Fig. 12 — Deadband Multiplier Fig. 13 — Operating Envelope for R-22Maneurop CompressorFig. 14 — 30RA Condenser Fan Sequence Cooling Set Point Select Table 8 — Control Methods and Cooling Set Points Service Test See Table 11 — Both main powerand control circuit power must be on Fig. 16 — Scrolling Marquee DisplayOptional Factory-InstalledHydronic Package — •Cooler Pump Control CPC Configuration, OPT1 ON Fig. 17 — Dual Chiller Thermistor Location Table 9 — Marquee Display Menu StructureTable 10 — Run Status Mode and Sub-ModeDirectory SUB-MODE Table 12 - Temperature Mode and Sub-ModeDirectory Table 13 — Pressure Mode and Sub-ModeDirectory Table 14 — Set Point and Sub-ModeDirectoryTable 15 — Inputs Mode and Sub-ModeDirectory KEYPAD Table 16 — Outputs Mode and Sub-ModeDirectorySUB-MODE DISPLAYITEM SUB-MODEKEYPAD DISPLAYITEM SUB-MODEKEYPAD DISPLAYTable 18 — Time Clock Mode and Sub-ModeDirectory PER.3 SUB-MODE Table 20 — Alarms Mode and Sub-ModeDirectory Table 19 — Operating Mode and Sub-ModeDirectoryKEYPAD ENTRY SUB-MODEITEM DISPLAYRSET DISP Table 23 — Operating Modes Table 24 — Example of Reading and Clearing Alarms Table 25A — 4-20mA ResetTable 26B — Configuring Return Temperature Reset Fig. 19 — Outdoor-AirTemperature Reset Fig. 18 — Standard Chilled FluidTemperature Control — No Reset Fig. 20 — Space Temperature ResetFig. 21A — 4- to 20-mADemand Limiting Fig. 21B — Cooling Set Point 4 to 20 mATROUBLESHOOTING Table 27 — Configuring Demand LimitTable 28 — Troubleshooting Recommended that system be filled with an approand fluid tubing Fig. 22 — Component Arrangement — 30RA010-030 FU — Fuse GND — GroundFig. 23 — Component Arrangement — 30RA032-040 FU — Fuse GND — GroundFig. 24 — Component Arrangement — 30RA042-055 FU — Fuse GND — GroundNOTES LEGEND Table 29 — Alarm and Alert Codes Table 29 - Alarm and Alert Codes cont Table 29 — Alarm and Alert Codes cont ALARMTable 29 — Alarm and Alert Codes cont ALARMTable 29 — Alarm and Alert Codes cont ALARMTable 30 - Unit Torque Specification SERVICECompressor Replacement Refer to Fig Electronic ComponentsFig. 29 — Compressor Location — 30RA010-030 Fig. 28 — Compressor WiringFig. 27 — Typical Compressor Mounting — All Sizes Fig. 30 — Compressor Location — 30RA032-055Condenser Section and Coils Table 31 - Oil ChargeFig. 32 — Condenser-FanMounting Fig. 31 — 30RA Access PanelsCheck Refrigerant Feed Components Fig. 33 — Condenser-FanPosition Standard FanCompressor and Unit Protective Devices Table 32 — Factory Settings, High-PressureSwitch Fixed Check Unit SafetiesCOOLER FREEZE-UPPROTECTION TEMP TEMP For Thermistor T10 For Thermistor T10 Main Base Board, J8 Connector Fig. 35 — Fluid-SideTemperature Sensors T1 and T2Fig. 36 — Thermistor Connections to PROGRAMMING Mode Table 37 - Fault Codes •P50: FAULT HISTORY — Last 8 faults•P51: SOFTWARE version PARAMETERS Table 39 — Replacement Modules PRE-START-UP MAINTENANCEMinimum Loop Volume System CheckOperating Limitations OPERATION SEQUENCE Table 41 — Temperature Limits forStandard 30RA Units CIRCADIO Circuit A Discrete Inputs/Outputs APPENDIX ASCN Tables A_UNIT General Unit Parameters CIRCA_AN Circuit A Analog ParametersCIRCBDIO Circuit B Discrete Inputs/Outputs CIRCB_AN Circuit B Analog ParametersOPTIONS Unit Parameters DUALCHIL Dual Chiller Configuration Settings ALARMDEF Alarm Definition TableDISPLAY Marquee Display SETUP BRODEFS Broadcast POC Definition TableOPTIONS1 Options 1 Configuration OPTIONS2 Options 2 ConfigurationSCHEDOVR Timed Override Setup RESETCON Temperature Reset and Demand LimitSETPOINT ALARMS: Maintenance Display UNITMAINTENANCE CURRMODS: Maintenance Display DUALCHIL: Maintenance DisplayLEARNFNS Maintenance Display LOADFACT: Maintenance DisplayPM-COIL:Maintenance Display PM-PUMP:Maintenance DisplayPM-STRN Maintenance Display RUNTEST: Maintenance Display STRTHOUR Maintenance Display TESTMODE: Maintenance DisplayVERSIONS: Maintenance Display WSMDEFME: Maintenance Display FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMP APPENDIX BAND MANUAL STARTERS AND MANUAL STARTERS cont FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMPAPPENDIX C DataPort, DataLink, BAClink Object DefinitionOPTIONS SETPOINTII. Preliminary Equipment Check START-UPCHECKLIST FOR 30RA LIQUID CHILLERRemove and use for Job File I.Project Information Design InformationIII. Unit Start-Up Start and Operate Machine. Complete the FollowingCL-3 Record Software Versions MODE — RUN STATUS COMMENTSCL-4 UNIT Configuration Settings OPTIONS1 Options ConfigurationIII.Unit Start-Upcont III.Unit Start-Upcont OPTIONS2 Options ConfigurationRSET Reset Configuration Settings CL-6SETPOINT SLCT Setpoint and Ramp Load ConfigurationIII.Unit Start-Upcont CL-7Service Test Mode and Sub-ModeDirectory III.Unit Start-Upcont
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