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INSTALLATION INSTRUCTIONS
For Self-Contained Package
Heat Pump Units
*PHM3 & GPCM3 13.4 SEER2 "M" Series
Our continuing commitment to quality products may mean a change in specifications without notice.
IOG-3029A
10/2022
© 2022 Daikin Comfort Technologies Manufacturing, L.P.
19001 Kermier Rd. Waller, TX 77484
www.goodmanmfg.com
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO
INSTALL, ADJUST, SERVICE, MAINTENANCE OR REPAIR
(HEREINAFTER, "SERVICE") THE EQUIPMENT SPECIFIED
IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT. THE
MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY
INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER
SERVICE OR SERVICE PROCEDURES. IF YOU SERVICE THIS
UNIT, YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR
PROPERTY DAMAGE WHICH MAY RESULT. IN ADDITION, IN
JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES
TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL,
ONLY LICENSED PERSONNEL SHOULD SERVICE THE
EQUIPMENT. IMPROPER INSTALLATION, ADJUSTMENT,
SERVICING, MAINTENANCE OR REPAIR OF THE EQUIPMENT
SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL,
ADJUST, SERVICE OR REPAIR THE EQUIPMENT SPECIFIED
IN THIS MANUAL WITHOUT PROPER TRAINING MAY RESULT
IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
DO NOT BYPASS SAFETY DEVICES.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
WARNING
WARNING
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Table of Contents
Troubleshooting
Related Manuals for Goodman GPCM32441
Summarization of Contents
IMPORTANT SAFETY INSTRUCTIONS
RECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELS
Explains symbols and labels used for safety warnings and precautions.
GENERAL
CODES AND REGULATIONS
Heat pumps designed for outdoor use; installation compliance with national and local codes.
EPA REGULATIONS
Regulations regarding refrigerant handling, introduction, and disposal.
NATIONAL CODES
Product designed for installation in accordance with National Codes.
MAJOR COMPONENTS
Lists hermetically sealed refrigerating system components, fans, and controls.
INSTALLATION
PRE-INSTALLATION CHECKPOINTS
Points to consider before starting installation: structural strength, clearances, power, ducts, drains.
CLEARANCE
Specifies minimum clearances for wall, service access, and overhangs.
UNIT LOCATION
Considerations for unit placement regarding noise, drainage, and foundation.
ROOF TOP INSTALLATION
Procedures for locating units on roofs, ensuring structural integrity and drainage.
ROOF CURB INSTALLATIONS
Guidelines for installing roof curbs, requiring structural support and compliance with roofing standards.
RIGGING DETAILS
Instructions and warnings for safely rigging and moving the unit.
CIRCULATING AIR AND FILTERS
AIRFLOW CONVERSION
How to convert units for horizontal or down discharge airflow.
FILTERS
Filters are not provided; installer must supply and install them correctly.
DUCTING
CONNECTING THE RETURN AND SUPPLY FLEXIBLE DUCT IN MANUFACTURED OR MODULAR HOUSING APPLICATION.
Connecting flexible ductwork using square-to-round converters for specific housing types.
PLENUM APPLICATION
Requirements for constructing plenums or square ducts, including insulation.
ELECTRICAL WIRING
HIGH VOLTAGE WIRING
Details on connecting high voltage wiring according to codes and diagrams.
LOW VOLTAGE WIRING
Wiring instructions for connecting thermostat to unit control box.
INTERNAL WIRING
Details on internal wiring diagrams and replacement wire requirements.
START-UP PROCEDURES AND CHECKLISTS
AIR CONDITIONER START-UP PROCEDURE
Step-by-step procedure for starting up the air conditioner.
HEAT PUMP START-UP PROCEDURE
Step-by-step procedure for starting up the heat pump.
FINAL SYSTEM CHECKS
Final checks after unit operation to ensure proper system balance and function.
COMPONENTS
Contactor
Control activated by thermostat for compressor and outdoor fan power.
Crankcase Heater
Warms compressor crankcase to prevent damage from liquid migration.
Condenser Motor
Activated by contactor during heating/cooling, except defrost.
Compressor
Activated by contactor for heating/cooling, protected by an internal overload.
Contactor Relay
Activated by thermostat to supply power to the contactor.
Outdoor Thermostat
Optional controls to prevent full electric heater operation at low outdoor ambient temps.
Reversing Valve Coil
Activated by thermostat to position reversing valve for cooling.
Indoor Blower Motor
EEM motor activated by thermostat, constant torque with low power consumption.
Blower Interlock Relay
Energizes blower during electric heat operation when thermostat doesn't.
HEAT PUMP OPERATION
COOLING CYCLE
How the heat pump operates in the cooling cycle, similar to an air conditioner.
HEATING CYCLE
How the heat pump redirects refrigerant for heating, removing heat from indoor coil.
DEFROST CONTROL
Details on how the defrost control initiates and terminates defrost cycles.
SUGGESTED FIELD TESTING/TROUBLESHOOTING
TESTING DEFROST CONTROL
Procedure to test the defrost control for proper sequencing and operation.
TESTING DEFROST THERMOSTAT
How to test the temperature at which the defrost thermostat contacts open/close.
AIR FLOW MEASUREMENT AND ADJUSTMENT
Procedures for measuring and adjusting airflow based on external static pressure.
TOTAL EXTERNAL STATIC PRESSURE
Method for measuring total external static pressure using a digital manometer.
ADJUSTING SPEED TAP FOR INDOOR BLOWER MOTOR
EEM MOTOR SPEED ADJUSTMENT
How to adjust blower speed by changing wire connections on EEM motor leads.
SUPERHEAT AND SUBCOOLING
CHECKING SUBCOOLING
Procedure for charging TXV units based on subcooling measurements.
CHECKING SUPERHEAT
Method for checking superheat by comparing suction line temperatures.
SUPERHEAT ADJUSTMENT
How to adjust superheat by turning the TXV adjustment screw.
REFRIGERANT CHARGE CHECK
Instructions for optimal performance and charging procedures.
ELECTRICAL HEAT INSTALLATION & ADJUSTMENT
HEATER KIT
Information on selecting and installing electric heat kits for the unit.
SERVICE
INADEQUATE AIR VOLUME THROUGH INDOOR COIL
Causes of poor heating operation due to insufficient indoor air volume.
OUTSIDE AIR INTO RETURN DUCT
Warnings against introducing cold outside air into the return duct.
MALFUNCTIONING REVERSING VALVE
Potential causes for a malfunctioning reversing valve.
CHECKING REVERSING VALVE AND SOLENOID
How to check for leaks and solenoid operation in the reversing valve.
TROUBLESHOOTING THE REVERSING VALVE FOR ELECTRICAL FAILURE
Diagnosing electrical failures related to the reversing valve solenoid.
TROUBLESHOOTING MECHANICAL FAILURES ON A REVERSING VALVE BY PRESSURE
Using pressure readings to troubleshoot mechanical failures of the reversing valve.
TROUBLESHOOTING MECHANICAL FAILURES ON A REVERSING VALVE BY TEMPERATURE
Using temperature readings to troubleshoot mechanical failures of the reversing valve.
POOR "TERMINATING" SENSOR CONTACT
Importance of good thermal contact for the defrost terminating sensor.
UNDERCHARGE
Effects of an undercharged heat pump on heating cycle performance.
TROUBLESHOOTING CHART
Troubleshooting Table
Comprehensive chart detailing symptoms, possible causes, and remedies for unit issues.
DIMENSIONS
MEDIUM CHASSIS
Lists models included in the medium chassis size.
LARGE CHASSIS
Lists models included in the large chassis size.
MINIMUM CLEARANCES
Specifies minimum clearances for roof overhangs.
HOMEOWNER'S ROUTINE MAINTENANCE RECOMMENDATIONS
REPLACE OR CLEAN FILTER
Importance of filter maintenance for efficiency and equipment protection.
CONDENSER AND EVAPORATOR MOTORS
Notes that motor bearings are permanently lubricated and require no further oiling.
COMPRESSOR
States the compressor motor is hermetically sealed and needs no oiling.
ALUMINUM INDOOR COIL CLEANING (QUALIFIED SERVICER ONLY)
Recommends flushing the aluminum coil with water for cleaning.
ANNUAL INSPECTION (QUALIFIED SERVICER ONLY)
Annual inspection by a qualified agency before heating/cooling seasons.
BEFORE CALLING YOUR SERVICER
Checks to perform before contacting a service technician.
START-UP CHECKLIST
Additional Checks
Additional checks to perform during start-up, like wire routing and proper clearances.
CUSTOMER FEEDBACK
PRODUCT REGISTRATION
Instructions for registering the product for additional warranty protection.
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