Carrier 52S specification

52S

SERIES

CAP	Ð Capacitor
COMP	Ð Compressor
FCS	Ð Fan Cycle Switch
FM	Ð Fan Motor
HTR	Ð Heater
IT	Ð Indoor Thermostat

LÐ Power Supply Line

OL	Ð Overload
PL	Ð Plug
PLS	Ð	Primary Limit Switch
SLS	Ð	Secondary Limit Switch

LEGEND

ST Ð Start Thermistor

SW Ð Selector Switch

Component Connection (Marked)

Component Connection (Unmarked)

Accessory or Optional Wiring Factory Wiring

To Indicate Common Potential Only. Not to Represent Wire

	SWITCH	CONTACTS MADE
	POSITION	CONTACTS MADE
	POSITION
	OFF	FCS TO LS
	FAN	L1 TO LO*, FCS1 TO LS
	LO HEAT	FCS2 TO LO, IT1 TO LS,
	LO HEAT	L2 TO HTR, FCS1 TO LS
		L2 TO HTR, FCS1 TO LS
	HI HEAT	FCS2 TO HI, IT1 TO LS,
	HI HEAT	L2 TO HTR, FCS1 TO LS
		L2 TO HTR, FCS1 TO LS
	LO COOL	FCS2 TO LO, COMP TO FCS1,
	LO COOL	COMP TO IT3
		COMP TO IT3

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.

	HI COOL	FCS2 TO HI, COMP TO FCS1,
	HI COOL	COMP TO IT3
		COMP TO IT3

*L1 to MED, some models.

FIGURE 84 Ð WIRING SCHEMATIC; 52SE Ð 208/230 V AND 265 V AA AND CP UNITS

52

Image 52

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

Contents

Service Technician Guide Contents Introduction Summary of DANGERS, WARNINGS, and Cautions Model Number Nomenclature General Disassembly To Disconnect Power for CORD- Connected UnitTo Open the Control BOX To Remove the Unit from the Wall Sleeve Duct Extension Screws To Access INDOOR-AIR Section Components Removing the AIR Baffle To Remove the AIR Discharge Grille To Remove the TOP Cover Ð Remove the screw To Remove the Discharge Deck To Access OUTDOOR-AIR Section ComponentsTo Remove the Gusset Removing Stator General Cleaning Cleaning and SafetyComponent Cleaning Schedule Consider the following safety issues before beginning Monthly Cleaning Cleaning the Indoor AIR Filter Ð RemoveReplacing the Indoor AIR Filter Ð Access Tools Needed Replacing the Vent AIR Filter Cleaning the Vent AIR FilterChassis Accessing the Indoor and Outdoor Seasonal CleaningDisconnect ALL Power to Unit Cleaning the Indoor and Outdoor Coils Accessing the Indoor FAN and IndoorCoils section Section Components on Disconnect ALL Power to the Unit Cleaning the Indoor FAN and FANCleaning the Heater Assembly Ð Once Compressor Rotary Compressor Components Compressor Troubleshooting Basic Hermetic Compressor Electrical Measurements Basic Compressor Troubleshooting Guide Compressor Replacement SHORTED/OPEN Windings Test Disconnect all power to unit Removing the Compressor Ð Follow the steps Installed Filter Drier Refrigerant Charging Ð Every mechanical Common Causes Heater Failure HeatersHeater Removal Removing Heater Screws Operating Controls Typical 52S Unit Operating Controls Description of Switch Settings NON-USER Adjustable SwitchesHigh Heat or High Cool Ð Push button Outside or Vent AIR Ð Push the FAN only Sequence of Operation HEAT/COOL Units FigureCooling only Units Figure Heat Pump Units Figure Tools Needed Component Operation and TroubleshootingIndoor Thermostat Heat Pump Units Indoor Thermostat IT CONTACTS, ALL 52SQ AA and CP Models Outdoor Frost Thermostat Heat Pump Units Locked OUT Capacitor Test Electrical Components Removal and Replacement Outdoor Frost Thermostat Screws Component Locations Open Control BOX FAN Motor FAN Motor TroubleshootingBasic FAN Motor Electrical Tests FAN Motor Troubleshooting Chart Typical 208/230 Volt Motors Typical 265 Volt Motors FAN Motor Replacement Removal Field 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 Schematics Wiring Schematic 52SC Ð 208/230 V and 265 V AA and CP Units Wiring 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