Carrier 52C, P manual

Page 45

FIGURE 72 — 52PC — TYPICAL WIRING SCHEMATIC FOR

STANDARD COOLING ONLY UNITS

45

Image 45

Contents Contents Service Technician GuideSummary of DANGERS, WARNINGS, and Cautions IntroductionDisconnect Power for CORD-CONNECTED Unit Unit DisassemblyDisconnect Power for Permanently Connected Hardwired Units Tools NeededRemove the Unit from the Wall Sleeve Open the Control BOXAccessing INDOOR-AIR Section Components Accessing Unit ComponentsAccessing OUTDOOR-AIR Section Components Remove the Discharge Deck AssemblyRemove the AIR Discharge Grille Ptac Unit with Lateral Duct Accessory InstalledGusset Removal Location of Screws on Discharge Grille Reinstall Front PanelGeneral Cleaning Cleaning and SafetyComponent Cleaning Schedule Cleaning the Outdoor AIR Vent Filter Monthly CleaningSeasonal Cleaning Cleaning the Indoor and Outdoor CoilsAccess and Clean Indoor FAN and FAN Scroll Ptac Exterior Surfaces Rotary Compressor Components CompressorCompressor Troubleshooting Disconnect ALL Power to the UnitBasic Hermetic Compressor Electrical Measurements Basic Compressor Troubleshooting Guide Compressor ReplacementSHORTED/OPEN Windings Test Strainer Capillary Tube Location Heaters Common Causes Heater FailureHeater Removal Acceptable Heater Resistance Values Disconnect ALL Power to UnitUNIT-MOUNTED Controls Operating ControlsWALL-MOUNTED Thermostat Controls Remote Thermostat TroubleshootingDo not daisy chain R 24 VAC NON-USER Adjustable Controls Description of Selector Switch Settings FigureComponent Operation and Troubleshooting Sequence of OperationTools Needed Indoor Thermostat IT CONTACTS, ALL 52CE, PE Models Indoor Thermostat IT CONTACTS, ALL 52CQ, PQ Models Capacitor Test Electrical Components Removal and ReplacementComponent Locations Open Control BOX FAN Motor Troubleshooting FAN MotorBasic FAN Motor Electrical Tests Typical 265 Volt Motors FAN Motor Troubleshooting Chart Typical 208/230 Volt MotorsLocation of Wiring Schematic On Front Panel of Control BOX FAN Motor ReplacementField 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 Refer to Figures 68-72 for Typical Wiring Schematics Wiring DiagramsComponent Legend CAP Component Connection Marked Fan Motor Page Most Frequent Ptac Service Questions Accessory Form Number Part Number Description AccessoriesAmps 52C Performance and Physical Data52PE-512---3 52P Performance and Physical DataPage Page Copyright 2002 Carrier Corporation