Carrier P, 52C manual Component Locations Open Control BOX

Page 28

52C,P

SERIES

4.Remove the thermostat capillary from the outdoor coil and clip any wire ties holding the capillary in place.

5.Disconnect the wires and carefully remove the thermostat and capillary from the unit, noting location of wires for easy re-assembly.

6.Reverse Steps 1-5 to reinstall.

CAPACITOR To remove the capacitor, perform the following steps:

1.Turn off unit power as described in UNIT DISASSEMBLY section.

2.Open the control box as detailed in the UNIT DISASSEMBLY section of this manual.

3.Properly discharge the capacitor as described in the Capacitor section under Component Opera- tion and Troubleshooting.

4.Remove the leads to the capacitor. Note the wire locations to ease re-assembly.

5.Remove the screw holding the capacitor.

6.Remove capacitor.

7.Reverse Steps 1-6 to reinstall.

FAN CYCLE SWITCH — The fan cycle switch is located on the front of the control box. To remove the fan cycle switch, perform the following steps:

1.Turn off unit power as described in UNIT DISASSEMBLY section.

2.Open the control box as described in UNIT DISASSEMBLY section of this manual.

3.Remove the 3 wires from the fan cycle switch. See Figure 54 for location, noting location of wires for re-assembly.

4.Push the snaps of the switch housing toward the switch with a pair of pliers or small screwdriver. Gently push the switch out of the housing.

5.Reverse Steps 1-4 to reinstall.

SELECTOR SWITCH — To remove the selector switch from the unit, perform the following steps:

1.Turn off unit power as described in UNIT DISASSEMBLY section.

2.Remove selector switch knob. See Figure 53.

3.Open control box as described in the UNIT DISASSEMBLY section of this manual.

4.Remove all the wires to the selector switch. Label wires to simplify re-assembly. See Figure 54.

5.Remove the 2 screws mounting the switch and remove switch.

6.Reverse Steps 1-5 to reinstall.

 

CAPACITOR

 

OUTDOOR FROST

 

THERMOSTAT

 

POWER CORD

 

RIBBED WIRE (L2)

 

TO CAPACITOR (C)

 

POWER CORD

 

PLAIN WIRE (L1)

GROUND SCREW

TO ROTARY SWITCH

FAN CYCLE

 

SWITCH

 

INDOOR

 

THERMOSTAT

SELECTOR

 

SWITCH

FIGURE 54 — COMPONENT LOCATIONS

IN OPEN CONTROL BOX

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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