Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48/50PD05 manual Integrated Gas Control IGC Board

Models: 48/50PD05

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Integrated Gas Control (IGC) Board

Integrated Gas Control (IGC) Board

The IGC is provided on gas heat units. (See Fig. 21 and Table 24.) The IGC controls the direct spark ignition system and monitors the rollout switch, limit switch, and induced-draft motor Hall Effect switch.

RED LED-STATUS

The IGC is equipped with an LED (light-emitting diode) for diagnostics. See the Troubleshooting section for more information.

48/50PD

						C07028
	Fig. 21 - Integrated Gas Control (IGC) Board
		Table 24 — IGC Connections

TERMINAL	POINT DESCRIPTION		SENSOR LOCATION		TYPE OF I/O	CONNECTION
LABEL	POINT DESCRIPTION		SENSOR LOCATION		TYPE OF I/O	PIN NUMBER
LABEL						PIN NUMBER
			INPUTS
RT, C	Input power from TRAN 1		control box		24 VAC
SS	Speed sensor		gas section		analog input	J1, 1---3
FS, T1	Flame sensor		gas section		switch input
W	Heat stage 1		MBB		24 VAC	J2, 2
RS	Rollout switch		gas section		switch input	J2, 5---6
LS	Limit switch		gas section		switch input	J2, 7---8
CS	Centrifugal switch (not used)				switch input	J2, 9---10
			OUTPUTS
L1, CM	Induced draft combustion motor		gas section		line VAC
IFO	Indoor fan request		control box		relay	J2, 1
GV (W1)	Gas valve (heat stage 1)		gas section		relay	J2, 12
GV (W2)	Gas Valve (heat stage 2, from MBB)		gas section		Not on IGC

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Image 54

Carrier 48/50PD05 manual Integrated Gas Control IGC Board

Contents

Troubleshooting Instructions TABLE OF CONTENTSControls, Start-Up,Operation, Service and Single Package Displacement VentilationUNIT DAMAGE HAZARD SAFETY CONSIDERATIONSELECTRICAL SHOCK HAZARD FIRE, EXPLOSION HAZARDBASIC CONTROL USAGE Accessory Navigator DisplayGENERAL ComfortLink ControlSystem Pilott and Touch Pilot Devices CCN Tables and DisplayConventions Used in This Manual Refrigerant Service PortsSTART-UP Unit PreparationEvaporator Fan Power SupplyInternal Wiring Condenser Fans and MotorsCONTROLS QUICK SET-UP Accessory InstallationControl Set Point and Configuration Log Orifice Change 48PD OnlyIAQ Switch AccessoriesPower Exhaust CCN CommunicationFan Status Filter StatusIndependent Outputs SERVICE TESTProgramming Operating Schedules Fan TestTHIRD PARTY CONTROL Alarm OutputDisplay Configuration CONTROLS OPERATIONService Password PSWD Unit ConfigurationPassword Enable PROT Remote HVAC Mode Disabled HV.DNOccupancy Determination Space Humidity Switch RH.SWGeneral Operating Sequence RH Sensor On OAQ Input RH.SCompressor Operation Indoor Fan OperationSetpoints→UHSP Unoccupied Free Cooling Outdoor Fan OperationEconomizer Operation Table 6 — Fan Level Control of Outdoor FanIAQ Analog Input Indoor Air Quality IAQPower Exhaust IA.CF = 0 No IAQCooling Modes Cooling Supply Air Set Point Reset Fig. 6 - Cooling Speed Demand WindowFig. 7 - Cool Supply Air Set Point Fig. 8 - Economizer Minimum Position For all units with EconomizersFor units with Enthalpy Control Ventilation ModeHeating Modes Supply-AirTemperature Sensor SAT Gas Heat Start-UpTemp Comp Strt Cool Factr TCS.C Temperature Compensated StartSetting Up the System Temp Comp Strt Heat Factr TCS.HSPT Override Enabled? SCH.O→OV.SP Carrier Comfort Network CCNR ConfigurationTemperature Compensated Start Logic Demand LimitRestart Procedure TROUBLESHOOTINGAlarm Handling CCN Alarm BroadcastDiagnostic Alarm Codes and Possible Causes Alarms and AlertsViewing and Clearing Unit Alarms Communication FailuresAlert Code T076 - Return Air Thermistor Failure Alert Code A157 - A/D Hardware Failure Alert Code T415 - IAQ Input Out of Range Alert Code T416 - OAQ Input Out of RangeTable 8 — ComfortLink Alarm Codes 48/50PDCooling Troubleshooting Table 8 — ComfortLink Alarm Codes contDigital Scroll Controller DSC Troubleshooting Flash Code 4 ⎯ Locked Rotor Table 10 — DSC Red LED Flash CodesEconomizer Troubleshooting Table 11 — Economizer Service AnalysisPhase Loss Protection Heating TroubleshootingVariable Frequency Drive VFD Troubleshooting Phase Reversal ProtectionLEGEND IDM -- Induced-DraftMotor Fig. 9 - IGC Service Analysis Logic48/50PD IGC --Integrated Gas Unit ControllerDESCRIPTION RESET METHOD48/50PD PROBABLE CAUSERefrigerant Temperatures Thermistor TroubleshootingAir Temperatures Thermistor/Temperature Sensor CheckTransducer Troubleshooting Forcing Inputs and OutputsSensor Trim TEMP 48/50PD TEMPDegree F 86K at 25_C ResistorsDegree C Degree C48/50PD MAJOR SYSTEM COMPONENTSGeneral sections belowFig. 12 - 48PD Control Wiring Schematic 48/50PDC08582 Fig. 13 - 50PD Control Wiring Schematic 48/50PDC08583 48/50PD C08584Fig. 15 - Typical Unit Component Arrangement 48/50PDC08657 setting Main Base Board MBBCEPL130346-01 Fig. 16 - Main Base Board MBBPOINT DESCRIPTION Table 19 - MBB Connections48/50PD SENSOR LOCATIONEconomizer Control Board ECB Fig. 17 - Economizer Control Board ECBDISPLAY Table 20 — ECB Connections48/50PD POINT DESCRIPTIONModulation Board AUX1 Fig. 18 - Modulation Board AUX1Table 21 — AUX1 Connections Digital Scroll Control Board DSC Variable Frequency Drive VFD Fig. 20 - Variable Frequency Drive VFDIntegrated Gas Control IGC Board Fig. 21 - Integrated Gas Control IGC BoardLow Voltage Terminal Strip Space Temperature Sensor T-55 Accessory Navigatort DisplayField-InstalledAccessories Space Temperature Sensor T-56Space Temperature Sensor T-58 Space Temperature Sensor AveragingFig. 25 - CCN System Architecture Fig. 26 - Space Temperature Sensor Averaging Factory WiringField Wiring LEGENDReturn/Supply Air Temperature Sensor SERVICECarrier Accessory Kits Two-PositionDamperCleaning Coil Maintenance and Cleaning RecommendationOutdoor-AirInlet Screens Condensate Drain PanFilters Main Burner 48PDLubrication Evaporator Fan Service and ReplacementEvaporator Fan Performance Adjustment CompressorsCondenser-FanAdjustment Evaporator Fan Belt Tension AdjustmentVariable Frequency Drive VFD Replacement Fig. 31 - Evaporator-FanAlignment and AdjustmentVerify Sensor Performance Economizer Operation During Power FailureTo Use the Cooling Charging Chart EvacuationGas Valve Adjustment PuronR RefrigerantMain Burners Cleaning and AdjustmentHigh Altitude Filter DrierRelief Devices Replacement PartsDiagnostic LEDs Compressor Sound ShieldAPPENDIX A - LOCAL DISPLAY AND CCN TABLES Table 27 - MODE - RUN STATUS48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 27 — MODE - RUN STATUS cont48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 28 — MODE - SERVICE TESTTable 29 — MODE - TEMPERATURES Table 30 — MODE - PRESSURESTable 32 — MODE - INPUTS APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 31 — MODE - SET POINTS 48/50PDAPPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 33 — MODE - OUTPUTS48/50PD Table 34 — MODE - CONFIGURATION APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD Table 34 — MODE - CONFIGURATION cont APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT 48/50PDITEM APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT 48/50PDITEM Table 36 - CCN ONLY TABLES APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONTTable 35 — MODE - TIME CLOCK 48/50PDAPPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 37 — MODE - OPERATING MODES48/50PD APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT Table 37 — MODE - OPERATING MODES cont48/50PD Table 37 — MODE - OPERATING MODES cont Table 38 — MODE - ALARMSAPPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT 48/50PDAPPENDIX B - VFD INFORMATION 0-10VdcAPPENDIX B - VFD INFORMATION CONT Table 40 — VFD CONFIGURATIONS48/50PD Start Up with Assistant VFD OperationVFD Modes Start Up by Changing Parameters IndividuallyStart-UpAssistant Mode Drive Parameter Backup ModeParameters Mode Changed Parameters ModeFaults Red LED Lit VFD DiagnosticsI/O Settings Mode Alarms Green LED FlashingHistory VFD MaintenanceCorrecting Alarms Heat SinkTable 41 — FAULT CODES APPENDIX B - VFD INFORMATION CONT48/50PD Table 41 — FAULT CODES cont APPENDIX B - VFD INFORMATION CONT48/50PD APPENDIX B - VFD INFORMATION CONT Table 42 — ALARM CODESTable 43 — MAINTENANCE INTERVALS 48/50PDBattery Replacement Main Fan ReplacementControl Panel Cleaning 3 3 2APPENDIX C - START-UPDATA AIRFLOW AIRFLOW Page LEGEND Bhp -- Brake HorsepowerBhp -- Brake Horsepower 1. Maximum continuous BHP isAIRFLOW AIRFLOWAIRFLOW AIRFLOW48/50PD 48/50PD Bhp -- Brake HorsepowerBhp -- Brake Horsepower LEGENDGENERAL NOTES FOR FAN PERFORMANCE DATA TABLES APPENDIX D - ADDITIONAL START-UPDATA CONTROL SET POINT AND CONFIGURATION LOG INDICATE UNIT SETTINGS BELOWTable 65 — MODE - CONFIGURATION Table 65 — MODE - CONFIGURATION cont 48/50PDTable 65 — MODE - CONFIGURATION cont 48/50PDTable 65 — MODE - CONFIGURATION cont 48/50PDI. PRE-START-UP UNIT START-UPCHECKLISTTEMPERATURES II.START-UPPrinted in U.S.A 48/50PDCatalog No:48-50PD-01T Edition Date: 3/09