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Carrier 48/50PD05 manual Table Of Contents, Controls, Start-Up,Operation, Service and

Models: 48/50PD05

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48/50PD05,06

48/50PD05,06

Single Package Displacement Ventilation

or Single Zone Variable Airflow Rooftop Units Electric Cooling/Gas Heating with PURONR (R-410A) Refrigerant and COMFORTLinkt 1.x Controls

Controls, Start-Up, Operation, Service and

Troubleshooting Instructions

TABLE OF CONTENTS		Alarm Output	11
	Page	Economizer Monitoring	11
SAFETY CONSIDERATIONS	. . 2	Economizer Damper Control	11
GENERAL	. . 3	CONTROLS OPERATION	11
BASIC CONTROL USAGE	. . 3	Display Configuration	11
ComfortLinkt Control	. . 3	Modes	12
Scrolling Marquee	. . 3	Unit Configuration	12
Accessory Navigator Display	. . 3	General Operating Sequence	13
Operation	. . 3	Occupancy Determination	13
System Pilott Device	. . 4	Compressor Operation	14
CCN Tables and Display	. . 4	Indoor Fan Operation	14
Conventions Used in This Manual	. . 5	Outdoor Fan Operation	15
START-UP	. . 5	Economizer Operation	15
Unit Preparation	. . 5	Indoor Air Quality (IAQ)	16
Compressor Mounting	. . 5	Cooling Modes	17
Refrigerant Service Ports	. . 5	Heating Modes	20
Crankcase Heater(s)	. . 5	Temperature Compensated Start	22
Compressor Rotation	. . 5	Carrier Comfort Network (CCN)R Configuration	23
Power Supply	. . 6	Demand Limit	23
Internal Wiring	. . 6	Alarm Handling	24
Evaporator Fan	. . 6	TROUBLESHOOTING	24
Condenser Fans and Motors	. . 6	Complete Unit Stoppage	24
Return-Air Filters	. . 6	Restart Procedure	24
Outdoor-Air Inlet Screens	. . 6	Control Module Communication	24
Accessory Installation	. . 7	Communication Failures	25
Orifice Change (48PD Only)	. . 7	Alarms and Alerts	25
Gas Heat (48PD Only)	. . 7	Cooling Troubleshooting	30
CONTROLS QUICK SET-UP	. . 7	Digital Scroll Controller (DSC) Troubleshooting	31
Control Set Point and Configuration Log	. . 7	Economizer Troubleshooting	33
Standard Unit Control	. . 7	Heating Troubleshooting	34
CCN Communication	. . 8	Variable Frequency Drive (VFD) Troubleshooting	34
Accessories	. . 8	Phase Loss Protection	34
Programming Operating Schedules	. 10	Thermistor Troubleshooting	37
SERVICE TEST	. 10	Transducer Troubleshooting	38
Independent Outputs	. 10	Forcing Inputs and Outputs	38
Fan Test	. 10	MAJOR SYSTEM COMPONENTS	42
Cooling Test	. 11	General	42
Heating Test	. 11	Main Base Board (MBB)	47
THIRD PARTY CONTROL	. 11	Economizer Control Board (ECB)	49
Remote Occupancy	. 11	Modulation Board (AUX1)	51
Fire Shutdown	. 11	Digital Scroll Control Board (DSC)	52

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Carrier 48/50PD05 manual Table Of Contents, Controls, Start-Up,Operation, Service and, Troubleshooting Instructions

Contents

Controls, Start-Up,Operation, Service and TABLE OF CONTENTSTroubleshooting Instructions Single Package Displacement VentilationELECTRICAL SHOCK HAZARD SAFETY CONSIDERATIONSUNIT DAMAGE HAZARD FIRE, EXPLOSION HAZARDGENERAL Accessory Navigator DisplayBASIC CONTROL USAGE ComfortLink ControlCCN Tables and Display System Pilott and Touch Pilot DevicesSTART-UP Refrigerant Service PortsConventions Used in This Manual Unit PreparationInternal Wiring Power SupplyEvaporator Fan Condenser Fans and MotorsControl Set Point and Configuration Log Accessory InstallationCONTROLS QUICK SET-UP Orifice Change 48PD OnlyPower Exhaust AccessoriesIAQ Switch CCN CommunicationFilter Status Fan StatusProgramming Operating Schedules SERVICE TESTIndependent Outputs Fan TestDisplay Configuration Alarm OutputTHIRD PARTY CONTROL CONTROLS OPERATIONPassword Enable PROT Unit ConfigurationService Password PSWD Remote HVAC Mode Disabled HV.DNGeneral Operating Sequence Space Humidity Switch RH.SWOccupancy Determination RH Sensor On OAQ Input RH.SIndoor Fan Operation Compressor OperationSetpoints→UHSP Economizer Operation Outdoor Fan OperationUnoccupied Free Cooling Table 6 — Fan Level Control of Outdoor FanPower Exhaust Indoor Air Quality IAQIAQ Analog Input IA.CF = 0 No IAQCooling Modes Fig. 6 - Cooling Speed Demand Window Cooling Supply Air Set Point ResetFig. 7 - Cool Supply Air Set Point For units with Enthalpy Control For all units with EconomizersFig. 8 - Economizer Minimum Position Ventilation ModeHeating Modes Gas Heat Start-Up Supply-AirTemperature Sensor SATSetting Up the System Temperature Compensated StartTemp Comp Strt Cool Factr TCS.C Temp Comp Strt Heat Factr TCS.HTemperature Compensated Start Logic Carrier Comfort Network CCNR ConfigurationSPT Override Enabled? SCH.O→OV.SP Demand LimitAlarm Handling TROUBLESHOOTINGRestart Procedure CCN Alarm BroadcastViewing and Clearing Unit Alarms Alarms and AlertsDiagnostic Alarm Codes and Possible Causes Communication FailuresAlert Code T076 - Return Air Thermistor Failure Alert Code A157 - A/D Hardware Failure Alert Code T416 - OAQ Input Out of Range Alert Code T415 - IAQ Input Out of Range48/50PD Table 8 — ComfortLink Alarm CodesTable 8 — ComfortLink Alarm Codes cont Cooling TroubleshootingDigital Scroll Controller DSC Troubleshooting Table 10 — DSC Red LED Flash Codes Flash Code 4 ⎯ Locked RotorTable 11 — Economizer Service Analysis Economizer TroubleshootingVariable Frequency Drive VFD Troubleshooting Heating TroubleshootingPhase Loss Protection Phase Reversal Protection48/50PD Fig. 9 - IGC Service Analysis LogicLEGEND IDM -- Induced-DraftMotor IGC --Integrated Gas Unit Controller48/50PD RESET METHODDESCRIPTION PROBABLE CAUSEAir Temperatures Thermistor TroubleshootingRefrigerant Temperatures Thermistor/Temperature Sensor CheckForcing Inputs and Outputs Transducer TroubleshootingSensor Trim TEMP TEMP 48/50PDDegree C 86K at 25_C ResistorsDegree F Degree CGeneral MAJOR SYSTEM COMPONENTS48/50PD sections below48/50PD Fig. 12 - 48PD Control Wiring SchematicC08582 48/50PD Fig. 13 - 50PD Control Wiring SchematicC08583 C08584 48/50PD48/50PD Fig. 15 - Typical Unit Component ArrangementC08657 CEPL130346-01 Main Base Board MBBsetting Fig. 16 - Main Base Board MBB48/50PD Table 19 - MBB ConnectionsPOINT DESCRIPTION SENSOR LOCATIONFig. 17 - Economizer Control Board ECB Economizer Control Board ECB48/50PD Table 20 — ECB ConnectionsDISPLAY POINT DESCRIPTIONFig. 18 - Modulation Board AUX1 Modulation Board AUX1Table 21 — AUX1 Connections Digital Scroll Control Board DSC Fig. 20 - Variable Frequency Drive VFD Variable Frequency Drive VFDFig. 21 - Integrated Gas Control IGC Board Integrated Gas Control IGC BoardLow Voltage Terminal Strip Field-InstalledAccessories Accessory Navigatort DisplaySpace Temperature Sensor T-55 Space Temperature Sensor T-56Space Temperature Sensor Averaging Space Temperature Sensor T-58Fig. 25 - CCN System Architecture Field Wiring Factory WiringFig. 26 - Space Temperature Sensor Averaging LEGENDCarrier Accessory Kits SERVICEReturn/Supply Air Temperature Sensor Two-PositionDamperCoil Maintenance and Cleaning Recommendation CleaningFilters Condensate Drain PanOutdoor-AirInlet Screens Main Burner 48PDEvaporator Fan Performance Adjustment Evaporator Fan Service and ReplacementLubrication CompressorsVariable Frequency Drive VFD Replacement Evaporator Fan Belt Tension AdjustmentCondenser-FanAdjustment Fig. 31 - Evaporator-FanAlignment and AdjustmentTo Use the Cooling Charging Chart Economizer Operation During Power FailureVerify Sensor Performance EvacuationPuronR Refrigerant Gas Valve AdjustmentHigh Altitude Cleaning and AdjustmentMain Burners Filter DrierDiagnostic LEDs Replacement PartsRelief Devices Compressor Sound ShieldTable 27 - MODE - RUN STATUS APPENDIX A - LOCAL DISPLAY AND CCN TABLES48/50PD Table 27 — MODE - RUN STATUS cont APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD Table 29 — MODE - TEMPERATURES Table 28 — MODE - SERVICE TESTAPPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 30 — MODE - PRESSURESTable 31 — MODE - SET POINTS APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 32 — MODE - INPUTS 48/50PDTable 33 — MODE - OUTPUTS APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 34 — MODE - CONFIGURATION48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 34 — MODE - CONFIGURATION cont48/50PD 48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTITEM 48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTITEM Table 35 — MODE - TIME CLOCK APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 36 - CCN ONLY TABLES 48/50PDTable 37 — MODE - OPERATING MODES APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD Table 37 — MODE - OPERATING MODES cont APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 38 — MODE - ALARMSTable 37 — MODE - OPERATING MODES cont 48/50PD0-10Vdc APPENDIX B - VFD INFORMATIONTable 40 — VFD CONFIGURATIONS APPENDIX B - VFD INFORMATION CONT48/50PD VFD Modes VFD OperationStart Up with Assistant Start Up by Changing Parameters IndividuallyParameters Mode Drive Parameter Backup ModeStart-UpAssistant Mode Changed Parameters ModeI/O Settings Mode VFD DiagnosticsFaults Red LED Lit Alarms Green LED FlashingCorrecting Alarms VFD MaintenanceHistory Heat SinkAPPENDIX B - VFD INFORMATION CONT Table 41 — FAULT CODES48/50PD APPENDIX B - VFD INFORMATION CONT Table 41 — FAULT CODES cont48/50PD Table 43 — MAINTENANCE INTERVALS Table 42 — ALARM CODESAPPENDIX B - VFD INFORMATION CONT 48/50PDControl Panel Cleaning Main Fan ReplacementBattery Replacement 3 3 2APPENDIX C - START-UPDATA AIRFLOW AIRFLOW Page Bhp -- Brake Horsepower Bhp -- Brake HorsepowerLEGEND 1. Maximum continuous BHP isAIRFLOW AIRFLOWAIRFLOW AIRFLOW48/50PD Bhp -- Brake Horsepower Bhp -- Brake Horsepower48/50PD LEGENDGENERAL NOTES FOR FAN PERFORMANCE DATA TABLES APPENDIX D - ADDITIONAL START-UPDATA INDICATE UNIT SETTINGS BELOW CONTROL SET POINT AND CONFIGURATION LOGTable 65 — MODE - CONFIGURATION 48/50PD Table 65 — MODE - CONFIGURATION cont48/50PD Table 65 — MODE - CONFIGURATION cont48/50PD Table 65 — MODE - CONFIGURATION contTEMPERATURES UNIT START-UPCHECKLISTI. PRE-START-UP II.START-UPCatalog No:48-50PD-01T 48/50PDPrinted in U.S.A Edition Date: 3/09