Sterling 30RA010-055 manual Alarm and Alert Codes cont

Page 56

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?

 

 

 

 

 

 

 

 

 

 

 

T196

Alert

Flow Lost While Pump 1

Cooler flow switch contacts

All compressors

Manual

Wiring error, pump

 

 

Running

open for 3 seconds after

shut down. Pump 1

 

circuit breaker

 

 

 

initially made

turned off. Pump 2 will

 

tripped, contactor fail-

 

 

 

 

be started if available.

 

ure

 

 

 

 

Chiller allowed to run if

 

 

 

 

 

 

Pump 2 successfully

 

 

 

 

 

 

starts and flow switch

 

 

 

 

 

 

is closed.

 

 

T197

Alert

Flow Lost While Pump 2

Cooler flow switch contacts

All compressors shut

Manual

Wiring error, pump

 

 

Running

open for 3 seconds after

down. Pump 2 turned

 

circuit breaker

 

 

 

initially made

off. Pump 1 will be

 

tripped, contactor

 

 

 

 

started if available.

 

failure

 

 

 

 

Chiller allowed to run if

 

 

 

 

 

 

Pump 1 successfully

 

 

 

 

 

 

starts and flow switch

 

 

 

 

 

 

is closed.

 

 

 

 

 

 

 

 

 

T198

Alert

Cooler pump 1 Aux

Pump 1 Auxiliary Contacts

Chiller not allowed to

Automatic when

Wiring error, faulty

 

 

Contacts Closed While

closed for 26 seconds

start

aux contacts open

pump contactor

 

 

Pump Off

when pump state is off

 

 

(welded contacts)

T199

Alert

Cooler pump 2 Aux

Pump 2 Auxiliary Contacts

Chiller not allowed to

Automatic when

Wiring error, faulty

 

 

Contacts Closed While

closed for 26 seconds

start

aux contacts open

pump contactor

 

 

Pump Off

when pump state is off

 

 

(welded contacts)

 

 

 

 

 

 

 

T200

Alert

Cooler Flow/Interlock

Cooler flow switch contacts

Chiller not allowed to

Manual

Wiring error, pump

 

 

Contacts failed to Close

failed to close within

start. For models with

 

circuit breaker

 

 

at start-up

1 minute (if cooler pump

dual pumps, the

 

tripped, contactor

 

 

 

control is enabled) or

second pump will be

 

failure, faulty flow

 

 

 

within 5 minutes (if cooler

started if available

 

switch or interlock

 

 

 

pump control is not

 

 

 

 

 

 

enabled) after start-up

 

 

 

A201

Alarm

Cooler Flow/Interlock

Flow switch opens for at

All compressors shut

Manual

Cooler pump failure,

 

 

Contacts Opened

least 3 seconds after

down. For models with

 

faulty flow switch or

 

 

During Normal

being initially closed

dual pumps, the

 

interlock, pump

 

 

Operation

 

second pump will be

 

circuit breaker

 

 

 

 

started if available

 

tripped

A202

Alarm

Cooler Pump Interlock

If configured for cooler

Chiller shut down

Automatic when

Wiring error, faulty

 

 

Closed When Pump is

pump control and flow

 

aux contacts open

pump contactor

 

 

Off

switch input is closed for

 

 

(welded contacts)

 

 

 

5 minutes while pump

 

 

 

 

 

 

output(s) are off

 

 

 

T203

Alert

Loss of Communication

Master chiller MBB

Dual chiller control

Automatic

Wiring error, faulty

 

 

with slave chiller

loses communication

disabled. Chiller runs

 

wiring, failed Slave

 

 

 

with slave chiller MBB

as a stand-alone

 

chiller MBB module,

 

 

 

 

machine.

 

power loss at slave

 

 

 

 

 

 

chiller, wrong slave

 

 

 

 

 

 

address.

 

 

 

 

 

 

 

T204

Alert

Loss of Communication

Slave chiller MBB loses

Dual chiller control

Automatic

Wiring error, faulty

 

 

with master chiller

communication with

disabled. Chiller runs

 

wiring, failed master

 

 

 

master chiller MBB

as a stand-alone

 

chiller MBB module,

 

 

 

 

machine

 

power loss at Master

 

 

 

 

 

 

chiller.

 

 

 

 

 

 

 

T205

Alert

Master and slave chiller

Master and slave chiller

Dual chiller routine

Automatic

SCN Address for

 

 

with same address

have the same SCN

disabled. Master/slave

 

both chillers is the

 

 

 

address (SCN.A)

run as stand-alone

 

same. Must be

 

 

 

 

chillers.

 

different. Check

 

 

 

 

 

 

SCN.A under the

 

 

 

 

 

 

OPT2 sub-mode in

 

 

 

 

 

 

Configuration at both

 

 

 

 

 

 

chillers.

 

 

 

 

 

 

 

T206

Alert

High Leaving Chilled

LWT read is greater than

Alert only. No action

Automatic

Building load greater

 

 

Water Temperature

LCW Alert Limit, Total

taken.

 

than unit capacity,

 

 

 

capacity is 100% and LWT

 

 

low water/brine flow

 

 

 

is greater than LWT

 

 

or compressor fault.

 

 

 

reading one minute ago

 

 

Check for other

 

 

 

 

 

 

alarms/alerts.

A207

Alarm

Cooler Freeze

Cooler EWT or LWT is less

Chiller shutdown

Both EWT and LWT

Faulty thermistor

 

 

Protection

than Brine Freeze (BR.FZ)

without going through

must be at least 6 F

(T1/T2), low water

 

 

 

 

pumpdown. Cooler

(3.3 C) above Brine

flow.

 

 

 

 

pump continues to

Freeze point (BR.FZ).

 

 

 

 

 

run a minimum of

Automatic for first,

 

 

 

 

 

5 minutes (if control

Manual reset thereaf-

 

 

 

 

 

enabled).

ter.

 

 

 

 

 

 

 

 

A208

Alarm

EWT or LWT

Cooler EWT is less than

Chiller shutdown.

Manual

Faulty cooler pump,

 

 

Thermistor failure

LWT by 3° F (1.7° C) for

Cooler pump shut off

 

low water flow,

 

 

 

1 minute after a circuit is

(if control enabled).

 

plugged fluid strainer.

 

 

 

started

 

 

 

T300

Alert

Cooler Pump 1

Pump 1 Service

None

Automatic

Routine pump

 

 

Scheduled

Countdown (P.1.DN)

 

 

maintenance

 

 

Maintenance Due

expired. Complete pump 1

 

 

required

 

 

 

maintenance and enter

 

 

 

 

 

 

'YES' for Pump 1

 

 

 

 

 

 

Maintenance Done

 

 

 

 

 

 

(P.1.MN) item.

 

 

 

56

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Contents SAFETY CONSIDERATIONS CONTENTS GENERALMAJOR SYSTEM COMPONENTS Control Module CommunicationSterlco Comfort Network SCN Interface — Table 1 — Unit SizesTable 3 — Status Switches Table 5 - SCN Communication Bus WiringTable 2 — Thermistor Designations Table 4 - Output RelaysLEGEND FOR FIG. Page Page Fig. 3 — Wiring Schematic 30RA010-018 30RA010-018AQUA SNAPSEE NOTE SEE NOTE AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICFig. 3 - Wiring Schematic 30RA010-018cont 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 SCHEMATICFig. 7 — Main Base Board ESCAPEENTERREMOTE CONTACT SW1 OFF ENABLE OFF SW2 ON MODEFig. 9 — Typical Space Temperature Sensor Wiring Fig. 11 - Energy Management Module CEPL130351100/100 Fig. 12 — Deadband Multiplier Fig. 14 — 30RA Condenser Fan Sequence Fig. 13 — Operating Envelope forR-22Maneurop Compressor Cooling Set Point Select Service Test See Table 11 — Both main power and control circuit power must be onTable 8 — Control Methods and Cooling Set Points 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 15 — Inputs Mode and Sub-ModeDirectory Table 13 — Pressure Mode and Sub-ModeDirectoryTable 14 — Set Point and Sub-ModeDirectory Table 16 — Outputs Mode and Sub-ModeDirectory SUB-MODEKEYPAD DISPLAYSUB-MODE KEYPADITEM DISPLAYSUB-MODE KEYPADITEM 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-ModeDirectorySUB-MODE ITEMKEYPAD ENTRY 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. 18 — Standard Chilled Fluid Temperature Control — No ResetFig. 19 — Outdoor-AirTemperature 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 Limitand fluid tubing Table 28 — TroubleshootingRecommended that system be filled with an appro 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 ALARMSERVICE Compressor Replacement Refer to FigTable 30 - Unit Torque Specification Electronic ComponentsFig. 28 — Compressor Wiring Fig. 27 — Typical Compressor Mounting — All SizesFig. 29 — Compressor Location — 30RA010-030 Fig. 30 — Compressor Location — 30RA032-055Condenser Section and Coils Table 31 - Oil ChargeFig. 31 — 30RA Access Panels Check Refrigerant Feed ComponentsFig. 32 — Condenser-FanMounting Fig. 33 — Condenser-FanPosition Standard FanTable 32 — Factory Settings, High-Pressure Switch FixedCompressor and Unit Protective Devices Check Unit SafetiesCOOLER FREEZE-UPPROTECTION TEMP TEMP For Thermistor T10 For Thermistor T10 Fig. 36 — Thermistor Connections to Main Base Board, J8 ConnectorFig. 35 — Fluid-SideTemperature Sensors T1 and T2 PROGRAMMING Mode •P51: SOFTWARE version Table 37 - Fault Codes•P50: FAULT HISTORY — Last 8 faults PARAMETERS Table 39 — Replacement Modules MAINTENANCE Minimum Loop VolumePRE-START-UP System CheckOperating Limitations Standard 30RA Units OPERATION SEQUENCETable 41 — Temperature Limits for APPENDIX A SCN Tables A_UNIT General Unit ParametersCIRCADIO Circuit A Discrete Inputs/Outputs CIRCA_AN Circuit A Analog ParametersOPTIONS Unit Parameters CIRCBDIO Circuit B Discrete Inputs/OutputsCIRCB_AN Circuit B Analog Parameters ALARMDEF Alarm Definition Table DISPLAY Marquee Display SETUPDUALCHIL Dual Chiller Configuration Settings BRODEFS Broadcast POC Definition TableOPTIONS1 Options 1 Configuration OPTIONS2 Options 2 ConfigurationSETPOINT SCHEDOVR Timed Override SetupRESETCON Temperature Reset and Demand Limit MAINTENANCE ALARMS: Maintenance DisplayUNIT CURRMODS: Maintenance Display DUALCHIL: Maintenance DisplayLEARNFNS Maintenance Display LOADFACT: Maintenance DisplayPM-STRN Maintenance Display PM-COIL:Maintenance DisplayPM-PUMP:Maintenance Display RUNTEST: Maintenance Display VERSIONS: Maintenance Display STRTHOUR Maintenance DisplayTESTMODE: Maintenance Display WSMDEFME: Maintenance Display AND MANUAL STARTERS FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMPAPPENDIX B AND MANUAL STARTERS cont FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMPAPPENDIX C DataPort, DataLink, BAClink Object DefinitionOPTIONS SETPOINTSTART-UPCHECKLIST FOR 30RA LIQUID CHILLER Remove and use for Job File I.Project InformationII. Preliminary Equipment Check Design InformationIII. Unit Start-Up Start and Operate Machine. Complete the FollowingCL-3 CL-4 Record Software Versions MODE — RUN STATUSCOMMENTS III.Unit Start-Upcont UNIT Configuration SettingsOPTIONS1 Options Configuration OPTIONS2 Options Configuration RSET Reset Configuration SettingsIII.Unit Start-Upcont CL-6SLCT Setpoint and Ramp Load Configuration III.Unit Start-UpcontSETPOINT CL-7Service Test Mode and Sub-ModeDirectory III.Unit Start-Upcont
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