Air Conditioners and
Heat Pumps Using
R-22 Refrigerant
Application Guide
and Service Manual
NOTE:
Read the entire instruction manual before starting the
installation.
This symbol
→
indicates a change since the last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS .....................................................2
INTRODUCTION ..........................................................................2
INSTALLATION GUIDELINE ....................................................2
Residential New Construction ..................................................2
Add-On Replacement (Retrofit) ...............................................2
Seacoast (For Air Conditioners Only) .....................................2
ACCESSORY DESCRIPTIONS ...................................................2
Compressor Crankcase Heater..................................................2
Evaporator Freeze Thermostat..................................................2
Winter Start Control .................................................................2
Compressor Start Assist—PTC ................................................2
Compressor Start Assist—Capacitor/Relay..............................2
Low-Ambient Controller ..........................................................2
MotorMaster™ Control ............................................................2
Low-Ambient Pressure Switch.................................................2
Wind Baffle...............................................................................3
Coastal Filter.............................................................................3
Support Feet ..............................................................................3
Liquid-Line Solenoid Valve .....................................................3
Thermostatic-Expansion Valve.................................................3
Isolation Relay ..........................................................................3
LOW-AMBIENT GUIDELINE.....................................................3
LONG-LINE GUIDELINE............................................................3
Approved Systems ....................................................................3
Interconnecting Tubing Sizing .................................................3
Metering Device Sizing ............................................................5
Liquid-Line Solenoid And Tubing Configuration ...................5
Charging Information................................................................6
2–Speed Applications ...............................................................7
UNIT IDENTIFICATION .............................................................9
Product Number Stamped on Unit-Rating Plate......................9
Serial Number Identification ..................................................10
CABINET.....................................................................................10
Remove Top Cover-WeatherMaker™ ...................................10
Remove Fan-Motor Assembly-WeatherMaker™ ..................10
Information Plate—WeatherMaker™.....................................11
Control-Box Cover—Cube Products......................................11
Remove Top Cover—Cube Products.....................................11
Remove Fan-Motor Assembly—Cube Products....................11
ELECTRICAL..............................................................................12
Aluminum Wire ......................................................................12
Contactors................................................................................13
Capacitors................................................................................14
Cycle Protector........................................................................16
Crankcase Heater ....................................................................16
Time-Delay Relay...................................................................17
Pressure Switches....................................................................18
Defrost Thermostats................................................................18
Defrost-Control Board ............................................................18
Fan Motors ..............................................................................22
Service Alarm Control Board.................................................23
Outdoor Thermostat(s)............................................................24
Compressor Plug.....................................................................24
Low-Voltage Terminals ..........................................................24
RECIPROCATING COMPRESSOR ..........................................25
Mechanical Failures ................................................................25
Electrical Failures ...................................................................26
System Cleanup After Burnout ..............................................27
Compressor Removal And Replacement ...............................28
COPELAND SCROLL COMPRESSOR ....................................28
Features ...................................................................................28
Troubleshooting ......................................................................28
Discharge Thermostat .............................................................28
Discharge Solenoid Valve ......................................................29
MILLENNIUM SCROLL COMPRESSOR ................................29
Features ...................................................................................29
Compressor Protection............................................................29
Troubleshooting ......................................................................29
Scroll-Compressor, 3–Phase Monitor.....................................29
OLYMPIA SERIES HORIZONTAL UNITS .............................29
General ....................................................................................29
Remove Fan Motor.................................................................31
Cleaning Coil ..........................................................................31
TWO-SPEED SYSTEM ..............................................................31
Cautions and Warnings...........................................................31
System Functions ....................................................................31
Factory Defaults......................................................................34
Major Components..................................................................34
LED Function/Malfunction Lights .........................................36
Troubleshooting ......................................................................36
REFRIGERATION SYSTEM .....................................................38
Refrigeration Cycle.................................................................38
Leak Detection ........................................................................38
Brazing ....................................................................................39
Service Valves ........................................................................39
AccuRater™ (Bypass-Type) Heat Pumps Only ....................40
Reversing Valve......................................................................41
Thermostatic-Expansion Valves (TXV) .................................42
Thermostatic-Expansion Valve (Bi-Flow TXV)....................43
Coil Removal ..........................................................................43
Liquid-Line Strainer (Heat Pumps Only) ..............................43
Accumulator ............................................................................43
Contaminant Removal ............................................................45
System Charging.....................................................................45
Checking Charge.....................................................................45
CARE AND MAINTENANCE...................................................46
Visit www.carrier.com
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
1
4
4
Tab
3a 5a 2a 5a
PC 101
Catalog No. 563-732
Printed in U.S.A.
Form 38-10SM
Pg 1
11-00
Replaces: 38-1SM, 38-16XA
