Carrier Comprehensive Guide to Alarm Codes and Troubleshooting for Chillers
Page 80

Table 11 — CVC/ICVC Primary and Secondary Messages and

Custom Alarm/Alert Messages with Troubleshooting Guides (cont)

G. NORMAL RUN WITH OVERRIDES

STATE

PRIMARY

SECONDARY

ALARM MESSAGE

ADDITIONAL

MESSAGE

MESSAGE

PRIMARY CAUSE

CAUSE/REMEDY

 

120

RUN CAPACITY

HIGH CONDENSER

120->Condenser Pressure

Check for high condenser water temperatures.

 

LIMITED

PRESSURE

[VALUE] exceeded limit of [LIMIT]*.

Check setting in SETUP1.

121

RUN CAPACITY

HIGH MOTOR

121->Comp Motor Winding Temp

Check motor cooling lines.

 

LIMITED

TEMPERATURE

[VALUE] exceeded limit of [LIMIT]*.

Check for closed valves.

 

 

 

 

Check setting in SETUP1.

122

RUN CAPACITY

LOW EVAP

122->Evaporator Refrig Temp

Check refrigerant charge.

 

LIMITED

REFRIG TEMP

[VALUE] exceeded limit of [LIMIT]*.

Check for low entering cooler temperatures.

123

RUN CAPACITY

HIGH COMPRESSOR

123->Surge Prevention Override:

Check for high condenser water temperatures or

 

LIMITED

LIFT

Lift Too High For Compressor.

low suction temperature.

124

RUN CAPACITY

MANUAL GUIDE

124->Run Capacity Limited:

Target guide vane point has been forced in

 

LIMITED

VANE TARGET

Manual Guide Vane Target.

MAINSTAT screen. Release force to continue

 

 

 

 

normal operation.

125

RUN CAPACITY

LOW DISCHARGE

No messages.

Check oil charge.

 

LIMITED

SUPERHEAT

 

Check refrigerant charge.

*[LIMIT] is shown on the CVC/ICVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or alarm condition. [VALUE] is the actual pressure, temperature, voltage, etc., at which the control has recorded at the time of the fault con- dition.

H. OUT-OF-RANGE SENSOR ALARMS

STATE

PRIMARY

SECONDARY

ALARM MESSAGE

ADDITIONAL

MESSAGE

MESSAGE

PRIMARY CAUSE

CAUSE/REMEDY

 

260

SENSOR

LEAVING CHILLED

260->Sensor Fault:

Check sensor resistance or voltage drop.

 

FAULT

WATER

Leaving Chilled Water

Check for proper wiring.

261

SENSOR

ENTERING CHILLED

261->Sensor Fault:

Check sensor resistance or voltage drop.

 

FAULT

WATER

Entering Chilled Water

Check for proper wiring.

262

SENSOR

CONDENSER

262->Sensor Fault:

Check sensor wiring.

 

FAULT

PRESSURE

Condenser Pressure

 

263

SENSOR

EVAPORATOR

263->Sensor Fault:

Check sensor wiring.

 

FAULT

PRESSURE

Evaporator Pressure

 

264

SENSOR

COMPRESSOR

264->Sensor Fault:

Check sensor resistance or voltage drop.

 

FAULT

BEARING TEMP

Comp Thrust Bearing Temp

Check for proper wiring.

265

SENSOR

COMPRESSOR

265->Sensor Fault:

Check sensor resistance or voltage drop.

 

FAULT

MOTOR TEMP

Comp Motor Winding Temp

Check for proper wiring.

266

SENSOR

COMP DISCHARGE

266->Sensor Fault:

Check sensor resistance or voltage drop.

 

FAULT

TEMP

Comp Discharge Temp

Check for proper wiring.

267

SENSOR

OIL SUMP TEMP

267->Sensor Fault:

Check sensor resistance or voltage drop.

 

FAULT

 

Oil Sump Temp

Check for proper wiring.

268

SENSOR

COMP OIL

268->Sensor Fault:

Check sensor wiring and accuracy.

 

FAULT

PRESS DIFF

Oil Pump Delta P

 

269

SENSOR

CHILLED WATER

269->Sensor Fault:

Check sensor wiring and accuracy.

 

FAULT

FLOW

Chilled Water Delta P

 

270

SENSOR

COND WATER

270->Sensor Fault:

Check sensor wiring and accuracy.

 

FAULT

FLOW

Cond Water Delta P

 

271

SENSOR

VFD SPEED SENSOR

271->Sensor Fault:

Check voltage input on terminals J6-1 and J6-2 on

 

FAULT

OUT OF RANGE

Check Actual VFD Speed Sensor

the ISM module. Check wiring.

273

SENSOR

VFD SPEED OUT OF

273->Sensor Fault:

Check VFD feedback 0-5 vac. Calibrate VFD

 

FAULT

RANGE

Check Actual VFD Speed Sensor

speed reference signal.

80

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Contents Start-Up, Operation, and Maintenance Instructions Safety ConsiderationsContents Contents Introduction Abbreviations and ExplanationsChiller Familiarization 19XR IdentificationTypical 19XR Components Refrigeration Cycle Motor and Lubricating OIL Cooling CycleVFD Cooling Cycle Lubrication CycleStarting Equipment Unit-Mounted Solid-State Starter OptionalDefinitions Unit-Mounted Wye-Delta Starter OptionalControls Variable Frequency Drive VFD 19XR Controls and Sensor Locations Major PIC II Components Panel Locations PIC II Component Panel LocationControl Panel CVC/ICVC Operation and Menus Fig Example of Status Screen 19XR Chiller Display Menu Structure CVC/ICVC 19XR Service Menu Structure Time and Date Example of Time Schedule Operation Screen Example of Set Point Screen Example 1 Chiller Display Default Screen CVC/ICVC Display DataExample 2 Maintstat Display Screen Description Status Units PointExample 3 Startup Display Screen Startup Description Status Units PointExample 4 Compress Display Screen Example 5 Heatex Display ScreenExample 6 Power Display Screen Example 7 Ismstat Display ScreenMenu Setpoint Select Description Status Units Point Default Example 8 CVC/ICVCPSWD Display ScreenCVC Icvc Description Status Units Point Example 9 Setpoint Display ScreenExample 12 Llmaint Display Screen Example 11 Override Display ScreenControl Algorithm Status Override Description Units Point Control Algorithm Status Wsmdefme Description Units Point Example 13 Ismhist Display ScreenExample 14 Wsmdefme Display Screen ISM Starter Config Data Ismconf Description Status Units Point DefaultExample 15 Netopt Display Screen Example 16 Ismconf Display ScreenExample 17 Options Display Screen Example 18 SETUP1 Display ScreenSpare ALERT/ALARM Enable LAG=2, STANDBY=3 Example 19 SETUP2 Display ScreenExample 20 Leadlag Display Screen Description Status Units Point Default Reset TypeExample 21 Rampdem Display Screen Example 22 Tempctl Display ScreenNormal Control mode occurs when Active Delta T Surge Prevention Mode occurs when Active Delta TMode IGV VFD PIC II System FunctionsPage Protective Safety Limits and Control Settings Page Capacity Overrides Evaporator Freeze Protection Icvc only a Page Surge Protection Fixed Speed Chiller Head Pressure Reference OutputPage Page Point Example of Attach to Network Device Screen Example of Holiday Period Screen Default CVC/ICVC screen, press the Menu START-UP/SHUTDOWNRecycle Sequence Fig Local Start-Up Local start-up or a manual start-up isEntering Condenser Water temperature plus 3 F -1.6C Equipment Required Before Initial START-UPJob Data Required 19XR Leak Test Procedures Page Page Temperature Pressure HFC-134a Pressure Temperature FHFC-134a Pressure Temperature C Inspect Wiring Perform dehydration as followsWhite G Check StarterManufacturer Cable no Software Configuration Parameter Benshaw RediStart Micro Menu Items Verify VFD Configuration and Change Parameters if Necessary Description Settings VFD Title Setting ParameterDescription Setting Press Status Press Compress Press Select Press Menu Press Status Press Compress Press SelectEstimated Minimum Load Conditions Load Surge Prevention Occurs TOO Soon Occurs TOO LateCCM Temperature Thermistors Tests to be Devices Tested Performed Charge Refrigerant into ChillerControl Test Menu Functions Initial START-UP Refrigerant HFC-134a ChargeCheck Oil Pressure and Compressor Stop Dry Run to Test Start-Up SequenceCheck Motor Rotation Operating Instructions Operator DutiesTo Start the Chiller To Stop the ChillerPumpout and Refrigerant Transfer Procedures Operating the Optional Pumpout UnitDate Cooler Condenser Compressor TimeBearing FLATurn off pumpout condenser water Valve ConditionChillers with Isolation Valves General Maintenance Test After Service, Repair, or Major Leak IfWeekly Maintenance Guide Vane Actuator LinkageScheduled Maintenance Check Safety and Operating Controls MonthlyCompressor Bearing and Gear Maintenance Inspect the Heat Exchanger Tubes and Flow DevicesOrdering Replacement Chiller Parts When Optional Pumpout System ControlsTroubleshooting Guide Checking Pressure TransducersOccdefcm HeatexLlmaint Terminate Pumpdown Mode Shutdown in ProgressICE Build Ready to StartPrestart AlertAutorestart in Progress Running Temp ControlFault RUN CapacityLimited SensorProtective Failure toStart StopLoss CommunicationPotential FREEZE-UPSensor Alert LOW OIL PressureAutorestart PendingPressure Alert RecycleOption Sensor DiffuserThermistor Temperature F vs. Resistance/Voltage Drop DropThermistor Temperature C vs. Resistance/Voltage Drop Temperature PIC ResistancePower is connected to Plug J1 on each module Control ModulesReplacing Defective Processor Modules Chiller Control Module CCM FigIntegrated Starter Module Fig Integratedstartermodule Measure SCR Pairs Recorded Being Between CheckedHeat Exchanger Data English Number of Tubes English CodeHeat Exchanger Data SI Number of Tubes CodeCompressor Weights 19XR Additional Data for Marine Waterboxes19XR Motor Weights Standard and High Efficiency Motors English Motor19XR Waterbox Cover Weights English lb 19XR Waterbox Cover Weights SI kg Motor Voltage Code Additional Miscellaneous WeightsOptional Pumpout System Electrical Data Compressor Assembly Torques Description TorqueView B High Speed Shaft 19XR Compressor Clearances Compressor Code100 Allen-Bradley Wye-Delta Unit-Mounted Starter101 102 ISM103 Temp104 105 106 Power Panel Wiring Schematic 107Cutler-Hammer Wye Delta Unit Mounted Starter Sizes 3-5DP 108Cutler-Hammer Wye Delta Unit Mounted Starter Size 6DP 109Ground Fault Phase Current Option Separate Metering Option111 112 AUX113 FU Fuse114 115 VFDTypical Variable Frequency Drive VFD Wiring Schematic 116117 118 119 120 121 122 Index Index Remove and use for job file JOB Data RequiredInspect Wiring and Record Electrical Data Ratings CL-240 to 100 10 to60.0 15 toCL-4 200 to 460105 to 115 85 to30 to 50 to20 to Psi CL-6150 to 90 to125 125 toAmp 250 CL-8 65 to90 to 100 25 to CL-950 to 145 CL-100000 to 02000000 to 0200 CL-11002 Power Module Dependent Selected motor 100% amps 004 To H.022 Job Sheet 60 for 60 Hz and 50 for 50 Hz028 10 to Job Sheet 60 for 60 Hz and 50 for 50 Hz 000 100 to Selected line voltageCL-13 CCN Local Reset CL-14Page Incurring obligations
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19XR, XRV specifications

The Carrier 19XR and 19XRV chillers are sophisticated cooling solutions that represent the forefront of HVAC technology. Designed for large commercial and industrial applications, these chillers provide exceptional performance, energy efficiency, and reliability, making them ideal for a variety of environments ranging from hospitals to manufacturing facilities.

One of the most significant features of the Carrier 19XR and 19XRV chillers is their advanced scroll compressor technology. These units employ a tandem scroll design that enhances efficiency while minimizing operational noise. This makes them ideal for urban environments where noise restrictions may be in place. Moreover, the compressors are equipped with variable speed drive options in the 19XRV model, which allows for greater energy savings by adjusting cooling output based on real-time demand.

In addition to their advanced compressors, the 19XR and 19XRV units incorporate the Carrier GreenChoice refrigerant, which has a lower global warming potential compared to traditional refrigerants. This innovative choice not only meets regulatory requirements but also contributes to sustainability goals, making these chillers a responsible choice for environmentally conscious organizations.

The units are engineered with a robust heat exchanger design, which enhances heat transfer efficiency and overall system performance. This ensures optimal operation even in extreme conditions. They feature a microprocessor-based control system that allows for precise monitoring and control of the chiller’s performance, enabling operators to make real-time adjustments to maximize energy efficiency.

The Carrier 19XR and 19XRV chillers also prioritize serviceability. The design incorporates easy access to key components, simplifying maintenance procedures and reducing downtime. This focus on maintainability extends the lifespan of the equipment, leading to lower lifecycle costs.

In terms of connectivity, these chillers are equipped with advanced Building Management System (BMS) integration capabilities. This allows for seamless monitoring and control of the chillers using a centralized platform, facilitating energy management and operational optimization.

Overall, the Carrier 19XR and 19XRV chillers stand out in the market for their blend of cutting-edge technology, energy efficiency, and user-friendly features. They are engineered to meet the demanding needs of modern commercial and industrial applications, making them a preferred choice for facility managers seeking reliable cooling solutions.
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