52S Series | Carrier guide

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52S SERIES

FIGURE 76 Ð 52S 12,000 BTU UNIT FIELD TEMPERATURE CHART Ð HIGH COOL Ð 50% RH

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Carrier manual 52S Series

Contents

Service Technician Guide Contents Introduction Summary of DANGERS, WARNINGS, and Cautions Model Number Nomenclature General Disassembly To Disconnect Power for CORD- Connected UnitTo Open the Control BOX To Remove the Unit from the Wall Sleeve Duct Extension Screws To Access INDOOR-AIR Section Components Removing the AIR Baffle To Remove the AIR Discharge Grille To Remove the TOP Cover Ð Remove the screw To Remove the Gusset To Access OUTDOOR-AIR Section ComponentsTo Remove the Discharge Deck Removing Stator General Cleaning Cleaning and SafetyComponent Cleaning Schedule Consider the following safety issues before beginning Monthly Cleaning Cleaning the Indoor AIR Filter Ð RemoveReplacing the Indoor AIR Filter Ð Access Tools Needed Chassis Cleaning the Vent AIR FilterReplacing the Vent AIR Filter Disconnect ALL Power to Unit Seasonal CleaningAccessing the Indoor and Outdoor Cleaning the Indoor and Outdoor Coils Accessing the Indoor FAN and IndoorCoils section Section Components on Cleaning the Heater Assembly Ð Once Cleaning the Indoor FAN and FANDisconnect ALL Power to the Unit Compressor Rotary Compressor Components Compressor Troubleshooting Basic Hermetic Compressor Electrical Measurements Basic Compressor Troubleshooting Guide Compressor Replacement SHORTED/OPEN Windings Test Disconnect all power to unit Removing the Compressor Ð Follow the steps Installed Filter Drier Refrigerant Charging Ð Every mechanical Heater Removal HeatersCommon Causes Heater Failure Removing Heater Screws Operating Controls Typical 52S Unit Operating Controls Description of Switch Settings NON-USER Adjustable SwitchesHigh Heat or High Cool Ð Push button Outside or Vent AIR Ð Push the FAN only Sequence of Operation HEAT/COOL Units FigureCooling only Units Figure Heat Pump Units Figure Indoor Thermostat Heat Pump Units Component Operation and TroubleshootingTools Needed Indoor Thermostat IT CONTACTS, ALL 52SQ AA and CP Models Outdoor Frost Thermostat Heat Pump Units Locked OUT Capacitor Test Electrical Components Removal and Replacement Outdoor Frost Thermostat Screws Component 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 Motors FAN Motor Replacement Removal Field 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 Schematics Wiring Schematic 52SC Ð 208/230 V and 265 V AA and CP Units Wiring 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