Carrier P, 52C manual

Contents Service Technician Guide ContentsIntroduction Summary of DANGERS, WARNINGS, and CautionsDisconnect Power for Permanently Connected Hardwired Units Unit DisassemblyDisconnect Power for CORD-CONNECTED Unit Tools NeededOpen the Control BOX Remove the Unit from the Wall SleeveAccessing OUTDOOR-AIR Section Components Accessing Unit ComponentsAccessing INDOOR-AIR Section Components Remove the Discharge Deck AssemblyPtac Unit with Lateral Duct Accessory Installed Remove the AIR Discharge GrilleGusset Removal Reinstall Front Panel Location of Screws on Discharge GrilleComponent Cleaning Schedule General CleaningCleaning and Safety Monthly Cleaning Cleaning the Outdoor AIR Vent FilterAccess and Clean Indoor FAN and FAN Scroll Seasonal CleaningCleaning the Indoor and Outdoor Coils Ptac Exterior Surfaces Compressor Rotary Compressor ComponentsBasic Hermetic Compressor Electrical Measurements Compressor TroubleshootingDisconnect ALL Power to the Unit Compressor Replacement Basic Compressor Troubleshooting GuideSHORTED/OPEN Windings Test Strainer Capillary Tube Location Heater Removal HeatersCommon Causes Heater Failure Disconnect ALL Power to Unit Acceptable Heater Resistance ValuesOperating Controls UNIT-MOUNTED ControlsRemote Thermostat Troubleshooting WALL-MOUNTED Thermostat ControlsDo not daisy chain R 24 VAC Description of Selector Switch Settings Figure NON-USER Adjustable ControlsTools Needed Component Operation and TroubleshootingSequence of Operation Indoor Thermostat IT CONTACTS, ALL 52CE, PE Models Indoor Thermostat IT CONTACTS, ALL 52CQ, PQ Models Electrical Components Removal and Replacement Capacitor TestComponent Locations Open Control BOX Basic FAN Motor Electrical Tests FAN Motor TroubleshootingFAN Motor FAN Motor Troubleshooting Chart Typical 208/230 Volt Motors Typical 265 Volt MotorsFAN Motor Replacement Location of Wiring Schematic On Front Panel of Control BOXField Temperature Charts 100 110 120 130 52P 12,000 BTU Unit Field Temperature Chart High Cool 50% RH Indoor Series Indoor 52C,P Series Page 000 Btu 52P-12,000 Btu 52C-12,000 Btu 15,000 Btu Wiring Diagrams Refer to Figures 68-72 for Typical Wiring SchematicsComponent Legend CAP Component Connection Marked Fan Motor Page Most Frequent Ptac Service Questions Accessories Accessory Form Number Part Number Description52C Performance and Physical Data Amps52P Performance and Physical Data 52PE-512---3Page Page Copyright 2002 Carrier Corporation