Carrier manual Wiring Schematic 52SE Ð 208/230 V and 265 V RC Units

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			LEGEND
CAP	Ð Capacitor	PL	Ð Plug
COMP	Ð Compressor	PLS	Ð Primary Limit Switch
CR	Ð Cooling Relay	SLS	Ð Secondary Limit Switch
EQUIP GND Ð Equipment Ground		SSS	Ð Speed Selector Switch
FM	Ð Fan Motor	ST	Ð Start Thermistor
FR	Ð Fan Relay	TB	Ð Terminal Board
HR	Ð Heating Relay	TRANS Ð Transformer
IFT	Ð Indoor Frost Thermostat		Component Connection (Marked)
L	Ð Power Supply Line		Component Connection (Marked)
OL	Ð Overload

Component Connection (Unmarked)

Terminal Board Connection

Field Ground Wiring

Field Control Wiring Accessory or Optional Wiring Factory Wiring

To Indicate Common Potential Only. Not to Represent Wire

NOTES:

1.Recommended for use on grounded power supply only.

2.Compressor and fan motor thermally protected.

3.Use copper conductors only.

4.All wiring must conform with NEC (National Electrical Code) and local codes.

5.Dashed lines indicate components when used.

6.Control center uses thermostat part no. HH01AD045 or equivalent.

7.Field control wire suitable for NEC class 2 control circuit, at 24 volts.

FIGURE 85 Ð WIRING SCHEMATIC; 52SE Ð 208/230 V AND 265 V RC UNITS

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Contents Contents Service Technician GuideSummary of DANGERS, WARNINGS, and Cautions IntroductionModel Number Nomenclature To Disconnect Power for CORD- Connected Unit General DisassemblyTo Open the Control BOX To Remove the Unit from the Wall SleeveDuct Extension Screws Removing the AIR Baffle To Access INDOOR-AIR Section ComponentsTo Remove the TOP Cover Ð Remove the screw To Remove the AIR Discharge GrilleTo Remove the Gusset To Access OUTDOOR-AIR Section ComponentsTo Remove the Discharge Deck Removing Stator Cleaning and Safety General CleaningComponent Cleaning Schedule Consider the following safety issues before beginningCleaning the Indoor AIR Filter Ð Remove Monthly CleaningReplacing the Indoor AIR Filter Ð Access Tools NeededChassis Cleaning the Vent AIR FilterReplacing the Vent AIR Filter Disconnect ALL Power to Unit Seasonal CleaningAccessing the Indoor and Outdoor Accessing the Indoor FAN and Indoor Cleaning the Indoor and Outdoor CoilsCoils section Section Components onCleaning the Heater Assembly Ð Once Cleaning the Indoor FAN and FANDisconnect ALL Power to the Unit Rotary Compressor Components CompressorBasic Hermetic Compressor Electrical Measurements Compressor TroubleshootingBasic Compressor Troubleshooting Guide SHORTED/OPEN Windings Test Compressor ReplacementRemoving the Compressor Ð Follow the steps Disconnect all power to unitRefrigerant Charging Ð Every mechanical Installed Filter DrierHeater Removal HeatersCommon Causes Heater Failure Removing Heater Screws Typical 52S Unit Operating Controls Operating ControlsNON-USER Adjustable Switches Description of Switch SettingsHigh Heat or High Cool Ð Push button Outside or Vent AIR Ð Push the FAN onlyHEAT/COOL Units Figure Sequence of OperationCooling only Units Figure Heat Pump Units FigureIndoor Thermostat Heat Pump Units Component Operation and TroubleshootingTools Needed Outdoor Frost Thermostat Heat Pump Units Indoor Thermostat IT CONTACTS, ALL 52SQ AA and CP ModelsCapacitor Test Locked OUTOutdoor Frost Thermostat Screws Electrical Components Removal and ReplacementComponent Locations Open Control BOX Basic FAN Motor Electrical Tests FAN Motor TroubleshootingFAN Motor Typical 265 Volt Motors FAN Motor Troubleshooting Chart Typical 208/230 Volt MotorsRemoval FAN Motor ReplacementField Temperature Charts 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Wiring Schematic 52SC Ð 208/230 V and 265 V AA and CP Units Wiring SchematicsWiring Schematic 52SE Ð 208/230 V and 265 V AA and CP Units Wiring Schematic 52SE Ð 208/230 V and 265 V RC Units Wiring Schematic 52SQ Ð 208/230 V and 265 V AA and CP Units Wiring Schematic 52SQ Ð 208/230 V and 265 V RC Units Most Frequent Ptac Service Questions