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Carrier
52S manual Ð Model Number Nomenclature, Ð Sample Data Information Plate
Models:
52S
1
3
56
56
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Troubleshooting
Wiring Schematics
Compressor Replacement
Symptom
General Disassembly
General Cleaning
Disconnect All Power To Unit
Lateral Duct Accessory Package
Description Of Switch Settings
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Image 3
FIGURE 2 Ð MODEL NUMBER NOMENCLATURE
FIGURE 3 Ð SAMPLE DATA INFORMATION PLATE
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Page 4
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Contents
PACKAGED TERMINAL AIR CONDITIONERS AND HEAT PUMPS
CONTENTS
52S SERIES
SERVICE TECHNICIAN GUIDE
52S SERIES
INTRODUCTION
SUMMARY OF DANGERS, WARNINGS, AND CAUTIONS
FIGURE 1 Ð REMOVING FRONT PANEL
FIGURE 3 Ð SAMPLE DATA INFORMATION PLATE
FIGURE 2 Ð MODEL NUMBER NOMENCLATURE
TO REMOVE THE UNIT FROM THE WALL SLEEVE
GENERAL DISASSEMBLY
TO DISCONNECT POWER FOR CORD- CONNECTED UNIT
TO OPEN THE CONTROL BOX
FIGURE 7 Ð DUCT EXTENSION SCREWS
WITH THE LATERAL DUCT ACCESSORY PACKAGE
TO REMOVE THE LATERAL DUCT
EXTENSION, FOR UNITS EQUIPPED
DISASSEMBLING THE LATERAL DUCT
TO ACCESS INDOOR-AIRSECTION COMPONENTS
LATERAL DUCT ACCESSORY PACKAGE
FIGURE 11 Ð DISCHARGE PLENUM ASSEMBLY
FIGURE 15 Ð ALUMINUM TOP PANEL
TO REMOVE THE AIR DISCHARGE GRILLE
FIGURE 14 Ð REMOVING AIR DISCHARGE GRILLE
TO REMOVE THE ALUMINUM TOP PANEL
FIGURE 17 Ð DISCHARGE DECK REMOVAL
TO ACCESS OUTDOOR-AIRSECTION COMPONENTS
TO REMOVE THE DISCHARGE DECK
TO REMOVE THE GUSSET
STATOR CONDENSER ORIFICE CONDENSER COIL
FIGURE 20 Ð REMOVING STATOR
FIGURE 21 Ð FRONT PANEL, CHASSIS, AND SLEEVE
GENERAL CLEANING
CLEANING AND SAFETY
COMPONENT CLEANING SCHEDULE
TOOLS NEEDED
MONTHLY CLEANING
CLEANING THE INDOOR AIR FILTER Ð Remove
REPLACING THE INDOOR AIR FILTER Ð Access
CHASSIS
CLEANING THE VENT AIR FILTER
FIGURE 23 Ð ACCESSING VENT AIR FILTER
REPLACING THE VENT AIR FILTER
FIGURE 25 Ð SIDE ANGLE SCREWS
SEASONAL CLEANING
ACCESSING THE INDOOR AND OUTDOOR
1.DISCONNECT ALL POWER TO UNIT
Section Components on page
CLEANING THE INDOOR AND OUTDOOR COILS
Coils section ACCESSING THE INDOOR FAN AND INDOOR
FIGURE 28 Ð CLEANING THE COILS
CLEANING THE HEATER ASSEMBLY Ð Once the
CLEANING THE INDOOR FAN AND FAN
ACCESSING THE HEATER ASSEMBLY Ð To access
1.DISCONNECT ALL POWER TO THE UNIT
COMPRESSOR
FIGURE 32 Ð ROTARY COMPRESSOR COMPONENTS
52S SERIES
1.DISCONNECT ALL POWER TO THE UNIT
COMPRESSOR TROUBLESHOOTING
BASIC HERMETIC COMPRESSOR ELECTRICAL MEASUREMENTS
FIGURE 33 Ð ROTARY COMPRESSOR COMPRESSION PROCESS
52S SERIES
SYMPTOM
COMPRESSOR REPLACEMENT
FIGURE 35 Ð SHORTED/OPEN WINDINGS TEST
FIGURE 36 Ð GROUNDED WINDINGS TEST
FIGURE 38 Ð TUBE INSERTED STRAINER
1.Disconnect all power to unit
REMOVING THE COMPRESSOR Ð Follow the steps
FIGURE 37 Ð STRAINER AND LIQUID TUBE
FIGURE 39 Ð INSTALLED FILTER DRIER
REFRIGERANT CHARGING Ð Every mechanical
FIGURE 40 Ð SUCTION LINE FILTER DRIER
FIGURE 41 Ð LIMIT SWITCH LOCATION
Consider the following safety issues
Power
Assembly 1.DISCONNECT ALL POWER TO UNIT
FIGURE 42 Ð REMOVING HEATER SCREWS
FIGURE 43 Ð HEATER REMOVED
FIGURE 44 Ð ACCEPTABLE HEATER RESISTANCE VALUES
FIGURE 47 Ð PROGRAMMABLE THERMOSTAT
OPERATING CONTROLS
FIGURE 45 Ð TYPICAL 52S UNIT OPERATING CONTROLS
FIGURE 46 Ð MANUAL THERMOSTAT
OUTSIDE OR VENT AIR Ð Push the FAN ONLY
DESCRIPTION OF SWITCH SETTINGS
NON-USERADJUSTABLE SWITCHES
HIGH HEAT OR HIGH COOL Ð Push button and
SEQUENCE OF OPERATION
FIGURE 50 Ð SELECTOR SWITCH CONTACTS
FIGURE 51 Ð SELECTOR SWITCH CONTACTS
FIGURE 52 Ð SELECTOR SWITCH CONTACTS
Consider the following safety issues
COMPONENT OPERATION AND TROUBLESHOOTING
TOOLS NEEDED
INDOOR THERMOSTAT Heat Pump Units
LEGEND Figures
OUTDOOR FROST THERMOSTAT Heat Pump Units
FIGURE 55 Ð OUTDOOR FROST THERMOSTAT OFT
CONTACTS, ALL 52SQ AA AND CP MODELS
FIGURE 57 Ð FAN CYCLE SWITCH 3 Terminal
LOCKED OUT
FIGURE 56 Ð CAPACITOR TEST
FIGURE 59 Ð TEMPERATURE LIMITER
ELECTRICAL COMPONENTS REMOVAL AND REPLACEMENT
FIGURE 60 Ð OUTDOOR FROST THERMOSTAT SCREWS
FIGURE 58 Ð ESCUTCHEON REMOVAL
IN OPEN CONTROL BOX
FIGURE 61 Ð COMPONENT LOCATIONS
FIGURE 62 Ð TWO-SPEED,PERMANENT
FAN MOTOR TROUBLESHOOTING
FAN MOTOR
BASIC FAN MOTOR ELECTRICAL TESTS
FIGURE 64 Ð TYPICAL 52S FAN MOTORS
FIGURE 63 Ð FAN MOTOR TROUBLESHOOTING CHART
TYPICAL 208/230 VOLT MOTORS
TYPICAL 265 VOLT MOTORS
FIGURE 66 Ð REMOVING OUTDOOR FAN FROM MOTOR SHAFT
FAN MOTOR REPLACEMENT
Removal
FIGURE 65 Ð SPRING CLIP
See Figures 67 - 82 for eld temperature data
FIELD TEMPERATURE CHARTS
52S SERIES
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located next to the unit control box
WIRING SCHEMATICS
Ð Capacitor
52S SERIES
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Ð Capacitor
52S SERIES
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the outdoor coil, and by using an optional acces
MOST FREQUENT PTAC SERVICE QUESTIONS
No, only for use on remote control RC models
By using a slinger ring to evaporate the water on
