Carrier manual Btu 52P-12,000 Btu 52C-12,000 Btu 15,000 Btu

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40

	35
Rise (F)
Temperature	30
Temperature	25
Indoor Air	20
	20

15

50

52

54

56

58

60

62

64

66

68

70

72

Indoor Entering Air Temperature (F)

7,000 Btu

9,000 Btu

52P-12,000 Btu

52C-12,000 Btu

15,000 Btu

FIGURE 67 — 52C AND 52P 7,000-15,000 BTU UNIT FIELD TEMPERATURE CHART FOR REVERSE CYCLE HEAT — HIGH HEAT

47 F (DRYBULB)/43 F (WET BULB) OUTDOOR AIR

52C,P SERIES

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Contents Service Technician Guide ContentsIntroduction Summary of DANGERS, WARNINGS, and CautionsUnit Disassembly Disconnect Power for CORD-CONNECTED UnitDisconnect Power for Permanently Connected Hardwired Units Tools NeededOpen the Control BOX Remove the Unit from the Wall SleeveAccessing Unit Components Accessing INDOOR-AIR Section ComponentsAccessing OUTDOOR-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 GrilleCleaning and Safety General CleaningComponent Cleaning Schedule Monthly Cleaning Cleaning the Outdoor AIR Vent FilterCleaning the Indoor and Outdoor Coils Seasonal CleaningAccess and Clean Indoor FAN and FAN Scroll Ptac Exterior Surfaces Compressor Rotary Compressor ComponentsDisconnect ALL Power to the Unit Compressor TroubleshootingBasic Hermetic Compressor Electrical Measurements Compressor Replacement Basic Compressor Troubleshooting GuideSHORTED/OPEN Windings Test Strainer Capillary Tube Location Common Causes Heater Failure HeatersHeater Removal 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 ControlsSequence of Operation Component Operation and TroubleshootingTools Needed 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 FAN Motor FAN Motor TroubleshootingBasic FAN Motor Electrical Tests 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