Carrier 52S manual Service Technician Guide, Contents

Page 1

MONTHLY CLEANING SEASONAL CLEANING

CLEANING AND SAFETY

GENERAL CLEANING

SUMMARY OF DANGERS, WARNINGS, AND CAUTIONS

52S

SERIES

SERVICE TECHNICIAN GUIDE

PACKAGED TERMINAL AIR CONDITIONERS

AND HEAT PUMPS

CONTENTS

Page

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,3

. . . 2 GENERAL DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

TO DISCONNECT POWER FOR CORD-CONNECTED UNIT . . 4 TO DISCONNECT POWER FOR PERMANENTLY CONNECTED (HARDWIRED) UNITS . . . . . . . . . . . . . . . . . . . 4 TO OPEN THE CONTROL BOX . . . . . . . . . . . . . . . . . . . . . . . 4 TO REMOVE THE UNIT FROM THE WALL SLEEVE . . . . . . . . 4

TO REMOVE THE LATERAL DUCT EXTENSION, FOR UNITS EQUIPPED WITH THE LATERIAL DUCT ACCESSORY PACKAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

TO ACCESS INDOOR-AIR SECTION COMPONENTS . . . . . . . 6

TO ACCESS OUTDOOR-AIR SECTION COMPONENTS . . . . . . 8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-15

. . . . . . . . . . . . . . . . . . . . . . . . . . 10 TOOLS NEEDED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

COMPRESSOR	16-21
COMPRESSOR TROUBLESHOOTING	. . 17
BASIC HERMETIC COMPRESSOR ELECTRICAL
MEASUREMENTS	. . 17
COMPRESSOR REPLACEMENT	. . 19

	Page
HEATERS	22,23
COMMON CAUSES OF HEATER FAILURE	. . 22
HEATER REMOVAL	. . 22
OPERATING CONTROLS	24-31
DESCRIPTION OF SWITCH SETTINGS	. . 25
NON-USER ADJUSTABLE SWITCHES	. . 25
SEQUENCE OF OPERATION	. . 26
COMPONENT OPERATION AND TROUBLESHOOTING . .	. . 27
ELECTRICAL COMPONENTS REMOVAL AND
REPLACEMENT	. . 30
FAN MOTOR	32-34
FAN MOTOR TROUBLESHOOTING	. . 32
BASIC FAN MOTOR ELECTRICAL TESTS	. . 32
FAN MOTOR REPLACEMENT	. . 34
FIELD TEMPERATURE CHARTS	35-50
WIRING SCHEMATICS	51-55

MOST FREQUENT PTAC SERVICE QUESTIONS . . . . . . . . . . 56

PTAC Customer Support Center

1·800·894·6449

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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 Discharge Deck To Access OUTDOOR-AIR Section ComponentsTo Remove the Gusset 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 NeededReplacing the Vent AIR Filter Cleaning the Vent AIR FilterChassis Accessing the Indoor and Outdoor Seasonal CleaningDisconnect ALL Power to Unit Accessing the Indoor FAN and Indoor Cleaning the Indoor and Outdoor CoilsCoils section Section Components onDisconnect ALL Power to the Unit Cleaning the Indoor FAN and FANCleaning the Heater Assembly Ð Once 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 DrierCommon Causes Heater Failure HeatersHeater Removal 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 FigureTools Needed Component Operation and TroubleshootingIndoor Thermostat Heat Pump Units 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 FAN Motor FAN Motor TroubleshootingBasic FAN Motor Electrical Tests 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