Carrier 17EX specifications DESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY

Page 92

Table 12 Ð LID Primary and Secondary Messages and Custom Alarm/Alert Messages

with Troubleshooting Guides (cont)

N. OTHER PROBLEMS/MALFUNCTIONS

DESCRIPTION/MALFUNCTION

PROBABLE CAUSE/REMEDY

Chilled Water/Brine Temperature

Chilled water set point set too high. Access set point on LID and verify.

Too High (Chiller Running)

Capacity override or excessive cooling load (chiller at design capacity). Check

 

 

LID status messages. Check for outside air in®ltration into conditioned space.

 

Condenser temperature too high. Check for proper ¯ow, examine cooling

 

tower operation, check for air or water leaks, check for fouled tubes.

 

Refrigerant level low. Check for leaks, add refrigerant, and trim charge.

 

Liquid bypass in waterbox. Examine division plates and gaskets for leaks.

 

Guide vanes fail to open. Use control test to check operation.

 

Chilled water control point too high. Access CONTROL ALGORITHM STA-

 

TUS table, MAINT01 screen, and check chilled water control operation.

 

Guide vanes fail to open fully. Be sure that the guide vane target is released.

 

Check guide vane linkage. Check limit switch in actuator. Check that sensor

 

is in the proper terminals.

Chilled Water/Brine Temperature Too Low (Chiller

Chilled water set point set too low. Access set point on LID and verify.

Running)

Chilled water control point too low. Access CONTROL ALGORITHM STA-

 

TUS tables, MAINT01 screen, and check chilled water control for proper

 

resets.

 

High discharge temperature keeps guide vanes open.

 

Guide vanes fail to close. Be sure that guide vane target is released. Check

 

chilled water sensor accuracy. Check guide vane linkage. Check actuator

 

operation.

Chilled Water Temperature Fluctuates. Vanes Hunt

Deadband too narrow. Con®gure LID for a larger deadband (SERVICE1 screen).

 

Proportional bands too narrow. Either PROPORTIONAL INC BAND or PRO-

 

PORTIONAL DEC BAND should be increased (MAINT01 screen).

 

Loose guide vane drive. Adjust chain drive.

 

Defective vane actuator. Check using control test feature.

 

Defective temperature sensor. Check sensor accuracy.

Low Oil Sump Temperature While Running

Check for proper oil level (not enough oil).

(Less than 100 F [38 C])

 

At Power Up, Default Screen Does Not Appear, ``Tables Load-

Check for proper communications wiring on PSIO module. Check that the

ing'' Message Continually Appears

COMM1 communications wires from the LID are terminated to the COMM1

 

PSIO connection. Check for ground or short on CCN system wiring.

SMM Communications Failure

Check that PSIO communication plugs are connected correctly. Check SMM

 

communication plug. Check for proper SMM power supply. See Control Mod-

 

ules section on page 96.

High Oil Temperature While Running

Check for proper oil level (too much oil). Check water supply to oil cooler.

Blank LID Screen (Minimal Contrast Visible)

Increase contrast potentiometer. See Fig. 49. Check red LED on LID for

 

proper operation, (power supply). If LED is blinking, but green LED's are

 

not, replace LID module, (memory failure). Check light bulb if backlit model.

``Communications Failure'' Highlighted Message At

LID is not properly addressed to the PSIO. Make sure that, on ATTACH TO

Bottom of LID Screen

NETWORK DEVICE screen,. LOCAL DEVICE is set to read the PSIO ad-

 

dress. Check LEDs on PSIO. Is red LED operating properly? Are green LEDs

 

blinking? See Control Module troubleshooting section.

Control Test Disabled

Press the Stop pushbutton. The PIC must be in the OFF mode for the con-

 

trol test feature to operate. Clear all alarms. Check line voltage percent on

 

STATUS01 screen. The percent must be within 90% to 110%. Check volt-

 

age input to SMM; calibrate starter voltage potentiometer for accuracy.

Vanes Will Not Open in Control Test

Low pressure alarm is active. Put chiller into PUMPDOWN mode or equal-

 

ize pressure. Check guide vane actuator wiring.

Oil Pump Does Not Run

Check oil pump voltage supply. Cooler vessel pressure under vacuum.

 

Pressurize vessel. Check temperature overload cutout switch.

LID Default Screen Does Not Update

This is normal operation when an alarm is present. The screen freezes the

 

moment the alarm is activated to aid in troubleshooting. The STATUS01 screen

 

provides current information.

Chiller Does Not Stop When the STOP Button is Pressed

The STOP button wiring connector on the LID module is not properly con-

 

nected or the chiller is in soft stop mode and the guide vanes are

 

closing.

LID Screen Dark

Light bulb burned out. Replace as needed.

 

 

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Contents Start-Up, Operation, and Maintenance Instructions Safety ConsiderationsContents Piping Check Relief Devices Inspect Wiring OCCPC01S Input Service CongurationsCoupling Maintenance Motor Maintenance Inspect Water PipingContents 17EX Chiller Familiarization IntroductionAbbreviations Performance CertifiedTypical 17EX Chiller Components OIL Cooling Cycle Lubrication CycleStarters Refrigeration, Cycle17EX Compressor Lubrication Cycle Controls DenitionsTemperature Sensors See Fig Pressure Transducers Major PIC Components Panel LocationsPIC Component Panel Location Processor Sensor Input/Output Module Control Center17EX Controls and Sensor Locations Psio LIDPIC Tewac Equip GND ÐGRD General LID Operation and Menus FigPROCESSOR/SENSOR INPUT/OUTPUT Module Psio LID Service Screen YES or no , on or OFF , etc. to select the desired state Override OperationsDefault Screen 17EX LID Menu StructureService Table Alarm HistoryEquipment Configuration Control TestCCN Carrier Comfort NetworkHgbp Ð Hot Gas Bypass LIDSetpoint ChwrChws HgbpDescription Range Units Reference Point Name Alarm History LID Display DataExample 1 Ð STATUS01 Display Screen Menu Status SelectMenu Status Example 2 Ð STATUS02 Display ScreenExample 3 Ð STATUS03 Display Screen Menu Example 4 Ð STATUS04 Display ScreenExample 5 Ð Setpoint Display Screen ICE Build Termination Example 6 Ð Configuration Config Display ScreenECW Control Option Example 7 Ð LEAD/LAG Configuration Display Screen LAG =2, Standby =3Example 8 Ð SERVICE1 Display Screen Example 9 Ð SERVICE2 Display Screen Spare Alert EnableExample 10 Ð SERVICE3 Display Screen Menu ServiceExample 11 Ð Maintenance MAINT01 Display Screen Example 12 Ð Maintenance MAINT02 Display ScreenDischarge Temperature Bearing TemperatureDescription RANGE/STATUS Units Reference Point Name Example 13 Ð Maintenance MAINT03 Display ScreenExample 14 Ð Maintenance MAINT04 Display Screen PIC System Functions Page Protective Safety Limits and Control Settings Capacity Overrides Page Page ECW Cent Capacity ICE Build Setpoint Example of Attach to Network Device Screen To Access the Service Screens Example of Holiday Period ScreenSTART-UP/SHUTDOWN Recycle Sequence FigPage Before Initial START-UP Job Data RequiredEquipment Required MotorPage 17EX Leak Test Procedures Ð HFC-134a Pressure Ð Temperature F Ð HFC-134a Pressure Ð Temperature CTemperature F Temperature CDehydration Cold Trap 900 500 901 7000 1000 7001-14500 2500 Inspect WiringCheck Optional Pumpout Compressor Water Pip External Gear Pre-Start Checks Recommended Motor Fastener Tightening TorquesExternal Gear Lubrication System SOLID-STATE Starters Check StarterMechanical Starters Input the Local Occupied Schedule OCCPC01S Set Up Chiller Control CongurationInput the Design Set Points Ð To modify the set T1/P1 Full Load Points T2/P2 Change the LID Configuration if NecessarySurge Limiting or 50% Load Surge Prevention Occurs TOO Soon Occurs TOO LateIncrease P1 by Decrease P1 by Charge Refrigerant into Chiller Initial START-UPControl Test Menu Functions Tests to be Devices Tested PerformedInitial Motor START-UP Dry Run to Test Start-Up SequenceCheck Motor Rotation Page Flange Nut Tightening Torques Low Speed Couplings Only Calibrate Motor Current Demand Setting Check Oil Pressure and Compressor StopTo Prevent Accidental Start-Up Ð The PIC can be General RecommendationsOperating Instructions Operator DutiesStarting the Chiller Stopping the ChillerPumpout and Refrigerant Transfer Procedures Operating the Optional Pumpout CompressorPlant Chiller Serial No Chiller Model No Refrigerant Type Rear View RLA Valve ConditionGeneral Maintenance Return Chiller to Normal Operating ConditionsContact Seal Maintenance Refer to Ð Checking Guide Vane Linkage Ð Refer to FigContact Seal Page Chiller Alignment Checking Preliminary AlignmentMeasuring Angular Misalignment Elevation Alignment Formula Adjusting Angular Misalignment in Plan HOT Alignment CheckCorrecting Parallel Misalignment DowelingWeekly Maintenance Scheduled MaintenanceCheck Safety and Operating Controls Monthly Changing the Oil FiltersPumpout Compressor OIL17EX Chiller Oil Specications Typical Float Valve Arrangement Sleeve Bearings Page Motor Riggings Inspect the Heat Exchanger Tubes Troubleshooting Guide Controls for Optional Pumpout CompressorPage MAINT01 MAINT02MAINT03 MAINT041CR AUX OilpdOilt PICStarts Limit Exceeded Autorestart in ProgressFault OperationPotential FREEZE-UP Failure to StopRunning Ð Temp Control Running Ð Demand LimitedChiller Protect Limit Faults Sensor Fault Alert LOW OIL PressureAlert Autorestart PendingDESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY External Gear Troubleshooting Guide ProblemPossible Cause Ð Item NO.s Possible Cause ActionÐ Thermistor Temperature F vs Resistance/Voltage Drop Temperature Voltage Resistance DropÐ Thermistor Temperature C vs Resistance/Voltage Drop Temperature Voltage Resistance DropModule Switch Control ModulesModule Address Input Options ModuleGRD Processor/Sensor Input/Output Module Psio FigStarter Management Module SMM Fig Installation of NEW Psio Module Switch Setting Options ModuleFour-In/Two-Out Module Fig Options ModulePhysical Data and Wiring Schematics 4-In/2-Out ModuleAdditional Cooler Weights Weight Vessel SIZE²Condenser Total Weight Condenser Charge 100Additional Condenser Weights Compressor Weight and Elbow WeightDrive Component Weights 101102 Ð Total Motor Weight, English lbÐ Total Motor Weight, SI kg Marine Waterbox Cover Weights NIH Waterbox Cover WeightsApproximate Refrigerant HCFC-134a Charge 103104 Auxiliary Systems, Electrical DataRelief Valve Locations and Data Compressor Fits and Clearances 105Measure 106Clearance Type Description 17FX Tabulation Ð Impeller Clearances Open-Drive Compressors107 108 109 TempPress Tewac110 111 112 113 General114 GND Ð GroundT1-T4 Terminal StripIndex Index Index Index Index Copyright 1997 Carrier Corporation

17EX specifications

The Carrier 17EX is recognized as an innovative air conditioning solution that combines efficiency with advanced technology. This model is designed to meet the increasing demands of residential and commercial cooling needs while maintaining environmental consciousness.

One of the standout features of the Carrier 17EX is its impressive Seasonal Energy Efficiency Ratio (SEER) rating. With a SEER rating that often exceeds 17, this unit ensures optimized energy consumption, significantly lowering operational costs for users. The incorporation of advanced compressor technology allows the system to adjust its cooling output based on the specific needs of the environment, thus providing both comfort and energy savings.

The Carrier 17EX utilizes a variable-speed inverter-driven compressor that enhances its performance and adaptability. This technology allows the air conditioning unit to operate at different speeds, intelligently adjusting to changing load conditions. As a result, the system runs more efficiently and quietly, providing a more consistent comfort level without the abrupt temperature swings associated with traditional units.

In addition to efficiency, the Carrier 17EX also prioritizes reliability and durability. The unit comes with a robust cabinet that protects the components from weather elements, ensuring longevity and consistent performance. The innovative design integrates a corrosion-resistant finish and robust insulation, which further enhances the unit's resilience in various environmental conditions.

For users concerned about indoor air quality, the Carrier 17EX includes advanced filtration systems designed to capture allergens and airborne particles. This feature is particularly beneficial for individuals with respiratory issues, ensuring that the air circulated within the space is clean and healthy.

Moreover, the Carrier 17EX is equipped with smart technology capabilities, allowing users to control their systems remotely through smartphones or other smart devices. This connectivity not only provides convenience but also empowers homeowners to optimize their energy use by adjusting settings on the fly, ensuring efficient operation even when they are away from home.

Overall, the Carrier 17EX stands out in the marketplace for its exceptional energy efficiency, advanced technology, and commitment to providing reliable and effective cooling solutions. Its combination of modern features makes it a preferred choice for those looking to enhance comfort while being mindful of energy consumption and environmental impact.
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