Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48/50PD05 manual Main Base Board MBB, CEPL130346-01, setting

Models: 48/50PD05

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Main Base Board (MBB)

Main Base Board (MBB)

See Fig. 16 and Table 19. The MBB is the center of the ComfortLink control system. It contains the major portion of the operating software and controls the operation of the unit. The MBB continuously monitors input/output channel information received from its inputs and from the Economizer Control Board (ECB). The MBB receives inputs from thermistors and transducers.

The MBB also receives the Current Sensor inputs for compressors and other discrete or digital inputs. The MBB reads space

temperature (SPT) from either a T-55, T-56 or T-58 device and space temperature offset (SPTO) from a T-56 device. See Field-Installed Accessories section. The MBB controls 9 relays.

IMPORTANT: The Main Base Board (MBB) has a 3-position instance jumper that is factory set to ‘1.’ Do not change this

setting.

RED LED - STATUS	GREEN LED -	YELLOW LED -
	LEN (LOCAL EQUIPMENT NETWORK)	CCN (CARRIER COMFORT NETWORK)

INSTANCE JUMPER (SET TO 1)

		CEPL130346-01
J1	J2		STATUS
J4	J3	LEN		J10
	J3

		CCN
	J5
J6
		J7	J8	J9
				C07026

Fig. 16 - Main Base Board (MBB)

48/50PD

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Carrier 48/50PD05 manual Main Base Board MBB, CEPL130346-01, setting

Contents

Single Package Displacement Ventilation TABLE OF CONTENTSControls, Start-Up,Operation, Service and Troubleshooting InstructionsFIRE, EXPLOSION HAZARD SAFETY CONSIDERATIONSELECTRICAL SHOCK HAZARD UNIT DAMAGE HAZARDComfortLink Control Accessory Navigator DisplayGENERAL BASIC CONTROL USAGECCN Tables and Display System Pilott and Touch Pilot DevicesUnit Preparation Refrigerant Service PortsSTART-UP Conventions Used in This ManualCondenser Fans and Motors Power SupplyInternal Wiring Evaporator FanOrifice Change 48PD Only Accessory InstallationControl Set Point and Configuration Log CONTROLS QUICK SET-UPCCN Communication AccessoriesPower Exhaust IAQ SwitchFilter Status Fan StatusFan Test SERVICE TESTProgramming Operating Schedules Independent OutputsCONTROLS OPERATION Alarm OutputDisplay Configuration THIRD PARTY CONTROLRemote HVAC Mode Disabled HV.DN Unit ConfigurationPassword Enable PROT Service Password PSWDRH Sensor On OAQ Input RH.S Space Humidity Switch RH.SWGeneral Operating Sequence Occupancy DeterminationSetpoints→UHSP Compressor OperationIndoor Fan Operation Table 6 — Fan Level Control of Outdoor Fan Outdoor Fan OperationEconomizer Operation Unoccupied Free CoolingIA.CF = 0 No IAQ Indoor Air Quality IAQPower Exhaust IAQ Analog InputCooling Modes Fig. 7 - Cool Supply Air Set Point Cooling Supply Air Set Point ResetFig. 6 - Cooling Speed Demand Window Ventilation Mode For all units with EconomizersFor units with Enthalpy Control Fig. 8 - Economizer Minimum PositionHeating Modes Gas Heat Start-Up Supply-AirTemperature Sensor SATTemp Comp Strt Heat Factr TCS.H Temperature Compensated StartSetting Up the System Temp Comp Strt Cool Factr TCS.CDemand Limit Carrier Comfort Network CCNR ConfigurationTemperature Compensated Start Logic SPT Override Enabled? SCH.O→OV.SPCCN Alarm Broadcast TROUBLESHOOTINGAlarm Handling Restart ProcedureCommunication Failures Alarms and AlertsViewing and Clearing Unit Alarms Diagnostic Alarm Codes and Possible CausesAlert 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 TroubleshootingPhase Reversal Protection Heating TroubleshootingVariable Frequency Drive VFD Troubleshooting Phase Loss ProtectionIGC --Integrated Gas Unit Controller Fig. 9 - IGC Service Analysis Logic48/50PD LEGEND IDM -- Induced-DraftMotorPROBABLE CAUSE RESET METHOD48/50PD DESCRIPTIONThermistor/Temperature Sensor Check Thermistor TroubleshootingAir Temperatures Refrigerant TemperaturesSensor Trim Transducer TroubleshootingForcing Inputs and Outputs TEMP TEMP 48/50PDDegree C 86K at 25_C ResistorsDegree C Degree Fsections below MAJOR SYSTEM COMPONENTSGeneral 48/50PDC08582 Fig. 12 - 48PD Control Wiring Schematic48/50PD C08583 Fig. 13 - 50PD Control Wiring Schematic48/50PD C08584 48/50PDC08657 Fig. 15 - Typical Unit Component Arrangement48/50PD Fig. 16 - Main Base Board MBB Main Base Board MBBCEPL130346-01 settingSENSOR LOCATION Table 19 - MBB Connections48/50PD POINT DESCRIPTIONFig. 17 - Economizer Control Board ECB Economizer Control Board ECBPOINT DESCRIPTION Table 20 — ECB Connections48/50PD DISPLAYTable 21 — AUX1 Connections Modulation Board AUX1Fig. 18 - Modulation Board AUX1 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 Space Temperature Sensor T-56 Accessory Navigatort DisplayField-InstalledAccessories Space Temperature Sensor T-55Fig. 25 - CCN System Architecture Space Temperature Sensor T-58Space Temperature Sensor Averaging LEGEND Factory WiringField Wiring Fig. 26 - Space Temperature Sensor AveragingTwo-PositionDamper SERVICECarrier Accessory Kits Return/Supply Air Temperature SensorCoil Maintenance and Cleaning Recommendation CleaningMain Burner 48PD Condensate Drain PanFilters Outdoor-AirInlet ScreensCompressors Evaporator Fan Service and ReplacementEvaporator Fan Performance Adjustment LubricationFig. 31 - Evaporator-FanAlignment and Adjustment Evaporator Fan Belt Tension AdjustmentVariable Frequency Drive VFD Replacement Condenser-FanAdjustmentEvacuation Economizer Operation During Power FailureTo Use the Cooling Charging Chart Verify Sensor PerformancePuronR Refrigerant Gas Valve AdjustmentFilter Drier Cleaning and AdjustmentHigh Altitude Main BurnersCompressor Sound Shield Replacement PartsDiagnostic LEDs Relief Devices48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLESTable 27 - MODE - RUN STATUS 48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 27 — MODE - RUN STATUS cont Table 30 — MODE - PRESSURES Table 28 — MODE - SERVICE TESTTable 29 — MODE - TEMPERATURES APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 31 — MODE - SET POINTS Table 32 — MODE - INPUTS48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 33 — MODE - OUTPUTS 48/50PD Table 34 — MODE - CONFIGURATIONAPPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT 48/50PD Table 34 — MODE - CONFIGURATION contAPPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT ITEM APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD ITEM APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD 48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 35 — MODE - TIME CLOCK Table 36 - CCN ONLY TABLES48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 37 — MODE - OPERATING MODES 48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 37 — MODE - OPERATING MODES cont 48/50PD Table 38 — MODE - ALARMSAPPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 37 — MODE - OPERATING MODES cont0-10Vdc APPENDIX B - VFD INFORMATION48/50PD APPENDIX B - VFD INFORMATION CONTTable 40 — VFD CONFIGURATIONS Start Up by Changing Parameters Individually VFD OperationVFD Modes Start Up with AssistantChanged Parameters Mode Drive Parameter Backup ModeParameters Mode Start-UpAssistant ModeAlarms Green LED Flashing VFD DiagnosticsI/O Settings Mode Faults Red LED LitHeat Sink VFD MaintenanceCorrecting Alarms History48/50PD Table 41 — FAULT CODESAPPENDIX B - VFD INFORMATION CONT 48/50PD Table 41 — FAULT CODES contAPPENDIX B - VFD INFORMATION CONT 48/50PD Table 42 — ALARM CODESTable 43 — MAINTENANCE INTERVALS APPENDIX B - VFD INFORMATION CONT3 3 2 Main Fan ReplacementControl Panel Cleaning Battery ReplacementAPPENDIX C - START-UPDATA AIRFLOW AIRFLOW Page 1. Maximum continuous BHP is Bhp -- Brake HorsepowerBhp -- Brake Horsepower LEGENDAIRFLOW AIRFLOWAIRFLOW AIRFLOW48/50PD LEGEND Bhp -- Brake HorsepowerBhp -- Brake Horsepower 48/50PDGENERAL NOTES FOR FAN PERFORMANCE DATA TABLES APPENDIX D - ADDITIONAL START-UPDATA Table 65 — MODE - CONFIGURATION CONTROL SET POINT AND CONFIGURATION LOGINDICATE UNIT SETTINGS BELOW 48/50PD Table 65 — MODE - CONFIGURATION cont48/50PD Table 65 — MODE - CONFIGURATION cont48/50PD Table 65 — MODE - CONFIGURATION contII.START-UP UNIT START-UPCHECKLISTTEMPERATURES I. PRE-START-UPEdition Date: 3/09 48/50PDCatalog No:48-50PD-01T Printed in U.S.A