Carrier 52S Series Service Technician Manual
Also see for 52S series: Installation, operating and maintenance instructionsInstallation, operating and maintenance instructionsArchitects and engineers' manualInstallation instructions
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Contents
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SERVICE TECHNICIAN GUIDEPACKAGED TERMINAL AIR CONDITIONERSAND HEAT PUMPSCONTENTS PageINTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,3SUMMARY OF DANGERS, WARNINGS, AND CAUTIONS . . . 2GENERAL DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9TO DISCONNECT POWER FOR CORD-CONNECTED UNIT . . 4TO DISCONNECT POWER FOR PERMANENTLYCONNECTED (HARDWIRED) UNITS . . . . . . . . . . . . . . . . . . . 4TO OPEN THE CONTROL BOX . . . . . . . . . . . . . . . . . . . . . . . 4TO REMOVE THE UNIT FROM THE WALL SLEEVE . . . . . . . . 4TO REMOVE THE LATERAL DUCT EXTENSION, FORUNITS EQUIPPED WITH THE LATERIAL DUCTACCESSORY PACKAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5TO ACCESS INDOOR-AIR SECTION COMPONENTS . . . . . . . 6TO ACCESS OUTDOOR-AIR SECTION COMPONENTS . . . . . . 8GENERAL CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-15CLEANING AND SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . 10TOOLS NEEDED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11MONTHLY CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11SEASONAL CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . 13COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-21COMPRESSOR TROUBLESHOOTING . . . . . . . . . . . . . . . . . . 17BASIC HERMETIC COMPRESSOR ELECTRICALMEASUREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17COMPRESSOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . 19PageHEATERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,23COMMON CAUSES OF HEATER FAILURE . . . . . . . . . . . . . . 22HEATER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22OPERATING CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . 24-31DESCRIPTION OF SWITCH SETTINGS . . . . . . . . . . . . . . . . . 25NON-USER ADJUSTABLE SWITCHES . . . . . . . . . . . . . . . . . 25SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 26COMPONENT OPERATION AND TROUBLESHOOTING . . . . 27ELECTRICAL COMPONENTS REMOVAL ANDREPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30FAN MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-34FAN MOTOR TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . 32BASIC FAN MOTOR ELECTRICAL TESTS . . . . . . . . . . . . . . . 32FAN MOTOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . 34FIELD TEMPERATURE CHARTS . . . . . . . . . . . . . . . . . . . . 35-50WIRING SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-55MOST FREQUENT PTAC SERVICE QUESTIONS . . . . . . . . . . 5652SSERIESPTAC Customer Support Center1 •800 •894 •6449 |
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