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Service and Troubleshooting
A/GPC 14 Seer Cooling, A/GPH 14 & 16 Seer Heat Pump
Multi-Position Package Units with R-410A Refrigerant
Pride and workmanship go into every product to provide
our customers with quality products. It is possible, however,
that during its lifetime a product may require service.
Products should be serviced only by a qualified service
technician who is familiar with the safety procedures
required in the repair and who is equipped with the proper
tools, parts, testing instruments and the appropriate service
manual. REVIEW ALL SERVICE INFORMATION IN THE
APPROPRIATE SERVICE MANUAL BEFORE
BEGINNING REPAIRS.
Only personnel that have been trained to install, adjust,
service 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 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.
Brand
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
®
WARNING
©2020-2021 Goodman Manufacturing Company, L.P.
TABLE OF CONTENTS
IMPORTANT INFORMATION ............................................ 2
PRODUCT IDENTIFICATION ........................................... 3
SYSTEM OPERATION ...................................................... 7
SCHEDULED MAINTENANCE ....................................... 10
SERVICING ..................................................................... 11
CHECKING VOLTAGE ............................................... 11
CHECKING WIRING ................................................... 11
CHECKING THERMOSTAT AND WIRING ................. 11
CONTROL CIRCUIT .................................................... 11
CHECKING CONTACTOR AND/OR RELAYS ............ 12
CHECKING CONTACTOR CONTACTS ...................... 12
CHECKING LOW PRESSURE CONTROL ................. 12
CHECKING HIGH PRESSURE CONTROL ................ 13
CHECKING CAPACITOR ............................................ 13
RESISTANCE CHECK ................................................ 14
CAPACITANCE CHECK .............................................. 14
(PSC MOTORS) .......................................................... 14
CHECKING EEM MOTORS ....................................... 14
CHECKING ECM MOTORS ........................................ 15
CHECKING ECM MOTOR WINDINGS ....................... 16
CHECKING COMPRESSOR ....................................... 16
RESISTANCE TEST .................................................... 17
GROUND TEST .......................................................... 17
UNLOADER TEST PROCEDURE ............................. 18
OPERATION TEST...................................................... 18
LOCKED ROTOR TEST ............................................. 18
TESTING CRANKCASE HEATER .............................. 19
TESTING DEFROST CONTROL ................................ 19
TESTING DEFROST THERMOSTAT .......................... 20
CHECKING HEATER LIMIT CONTROL(S) ................. 20
CHECKING HEATER ELEMENTS .............................. 20
REFRIGERATION REPAIR PRACTICE ...................... 20
RS6300013r5
April 2021
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Related Manuals for Amana A/GPC 14
Summary of Contents for Amana A/GPC 14
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Page 1: Table Of Contents
Service and Troubleshooting A/GPC 14 Seer Cooling, A/GPH 14 & 16 Seer Heat Pump Multi-Position Package Units with R-410A Refrigerant TABLE OF CONTENTS IMPORTANT INFORMATION ..........2 PRODUCT IDENTIFICATION ........... 3 SYSTEM OPERATION ............7 Pride and workmanship go into every product to provide SCHEDULED MAINTENANCE ........ -
Page 2: Important Information
IMPORTANT INFORMATION SAFE REFRIGERANT HANDLING While these items will not cover every conceivable STANDING PRESSURE TEST (RECOMMENDED situation, they should serve as a useful guide. BEFORE SYSTEM EVACUATION) ......21 LEAK TESTING (NITROGEN OR NITROGEN-TRACED) ..... 21 WARNING SYSTEM EVACUATION ..........21 CHARGING .............. -
Page 3: Product Identification
PRODUCT IDENTIFICATION NOMENCLATURE The model number is used for positive identification of component parts used in manufacturing. Please use this number when requesting service or parts information. - Page 4 PRODUCT IDENTIFICATION NOMENCLATURE The model number is used for positive identification of component parts used in manufacturing. Please use this number when requesting service or parts information.
- Page 5 PRODUCT IDENTIFICATION Single Phase Multiposition Cooling Model # Description ® Amana Brand Package Cooling 14 SEER R410A Multiposition cooling units. Initial release APC14[24-60]M41AA of single phase models. ® Goodman Brand Package Cooling 14 SEER R410A Multiposition cooling units. Initial GPC14[24-60]M41AA release of single phase models.
- Page 6 PRODUCT IDENTIFICATION Single Phase Multiposition Heat Pump Model # Description ® Amana Brand Package Heat Pump up to 16 SEER R410A Multiposition heating/cooling units. APH16[24-48]M41AA Initial release of single phase models. ® Goodman Brand Package Heat Pump up to 16 SEER R410A Multiposition heating/cooling units.
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Page 7: System Operation
SYSTEM OPERATION Cooling Cycle Cooling Only Models Cooling When the contacts of the room thermostat close, making terminals R to Y and R to G, the low voltage circuit to the contactor is completed starting the compressor and outdoor The refrigerant used in the system is R-410A. It is a clear, fan motor. - Page 8 SYSTEM OPERATION A/GPH EEM Equipped Models Only: With the thermostat set to the emergency heat position and a call for 2nd stage heat, R to W1 will be energized. This will energize the electric heat contactor(s)/sequencer(s) Single-Stage Heat Pump Units and the EEM motor.
- Page 9 SYSTEM OPERATION Typical Heat Pump System in Cooling Reversing Valve (Energized) Indoor Outdoor Coil Coil Accumulator Typical Heat Pump System in Heating Reversing Valve (De-Energized) Indoor Outdoor Coil Coil Accumulator...
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Page 10: Scheduled Maintenance
TEST EQUIPMENT SCHEDULED MAINTENANCE Proper test equipment for accurate diagnosis is as Package gas units require regularly scheduled essential as regular hand tools. maintenance to preserve high performance standards, prolong the service life of the equipment, and lessen the The following is a must for every service technician and chances of costly failure. -
Page 11: Servicing
SERVICING 1. Check wiring visually for signs of overheating, damaged insulation and loose connections. 2. Use an ohmmeter to check continuity of any Checking Voltage suspected open wires. 3. If any wires must be replaced, replace with comparable gauge and insulation thickness. WARNING Checking Thermostat and Wiring High Voltage! -
Page 12: Checking Contactor And/Or Relays
SERVICING Checking Contactor Contacts WARNING WARNING High Voltage! Disconnect all power before servicing or High Voltage! installing. Multiple power sources may be present. Disconnect all power before servicing or Failure to do so may cause property damage, installing. Multiple power sources may be present. personal injury or death. -
Page 13: Checking High Pressure Control
SERVICING Capacitor, Start Scroll Compressor Models Hard start components are not required on Scroll Test for continuity using a VOM and if not as above, compressor equipped units due to a non-replaceable check replace the control. valve located in the discharge line of the compressor. However hard start kits are available and may improve low Checking High Pressure Control voltage starting characteristics. -
Page 14: Resistance Check
SERVICING Capacitance Check WARNING Resistance Check Discharge capacitor through a 20 to 30 OHM resistor before handling. WARNING Using a hookup as shown below, take the amperage and High Voltage! voltage readings and use them in the formula: Disconnect all power before servicing or installing. -
Page 15: Checking Ecm Motors
SERVICING Checking ECM Motors An ECM is an Electronically Commutated Motor which offers many significant advantages over PSC motors. If the windings do not test continuous or a reading is The ECM has near zero rotor loss, synchronous machine obtained from lead to ground, replace the motor. operation, variable speed, low noise, and programmable air flow. -
Page 16: Checking Ecm Motor Windings
SERVICING 3. Disconnect the 3-pin motor connector from the power head and lay it aside. 4. Using an ohmmeter, check the motor windings for continuity to ground (pins to motor shell). If the ohmmeter indicates continuity to ground, the motor is defective and must be replaced. -
Page 17: Resistance Test
SERVICING If either winding does not test continuous, replace the compressor. To reduce the possibility of external ignition, all open NOTE: If an open compressor is indicated, allow flame, electrical power, and other heat sources should be ample time for the internal overload to reset before extinguished or turned off prior to servicing a system. -
Page 18: Unloader Test Procedure
SERVICING C. Replace plug if either of these test methods doesn’t show the desired results. Unloader Test Procedure Operation Test (2 Stage Compressors Only) If the voltage, capacitor, overload and motor winding test fail to show the cause for failure: A nominal 24-volt direct current coil activates the compressor internal unloader solenoid. -
Page 19: Testing Crankcase Heater
SERVICING 4. If not as above, replace control. Checking Reversing Valve And Solenoid With power ON: Occasionally the reversing valve may stick in the heating or cooling position or in the mid-position. WARNING When stuck in the mid-position, part of the discharge gas from the compressor is directed back to the suction side, Line voltage now present. -
Page 20: Testing Defrost Thermostat
SERVICING Optional electric heaters may be added, in the quantities shown in the spec sheet for each model unit, to provide electric resistance heating. Under no condition shall more 4. Immediately remove jumper from test pins. heaters than the quantity shown be installed. 5. -
Page 21: Standing Pressure Test (Recommended Before System Evacuation)
SERVICING Leak test the system using dry nitrogen and soapy water to identify leaks. If you prefer to use an electronic leak detector, charge the system to 10 PSIG with the At any time the system has been open for repair, the appropriate system refrigerant (See Serial Data Plate factory installed liquid line filter drier must be replaced. -
Page 22: Charging
SERVICING Break the vacuum with dry nitrogen again, bring the system pressure back to 2-3 PSIG, and hold for 20 minutes. 3. Evacuate the system to 500 microns and hold for 60 Deep Vacuum Method (Recommended) minutes. The Deep Vacuum Method requires a vacuum pump 4. -
Page 23: Checking Compressor Efficiency
SERVICING The illustration below shows typical heatpump TXV/check valve operation in the heating and cooling modes. Final Charge Adjustment The outdoor temperature must be 60°F or higher. Set the room thermostat to COOL, fan switch to AUTO, and set the temperature control well below room temperature. - Page 24 SERVICING Pressure vs. Temperature Chart R-410A °F °F °F °F °F °F PSIG PSIG PSIG PSIG PSIG PSIG -37.7 37.8 74.3 100.2 120.7 137.6 114.0 216.0 318.0 420.0 522.0 -34.7 116.0 38.7 218.0 74.9 320.0 100.7 422.0 121.0 524.0 137.9 -32.0 118.0 39.5...
- Page 25 SERVICING REQUIRED LIQUID LINE TEMPERATURE LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT SERVICE VALVE (PSIG)
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Page 26: Superheat
SERVICING Ambient Condenser Return Air Temp. (°F Drybulb) Inlet Temp (°F If these symptoms are observed: Drybulb) 1. Check for a restricted liquid line or drier. A restriction will be indicated by a temperature drop across the drier. 2. Check the operation of the power element of the valve as described in Checking Expansion Valve Operation. -
Page 27: Checking Subcooling
SERVICING NOTE: Do NOT adjust the charge based on suction pressure unless there is a gross undercharge. 4. Disconnect manifold set, installation is complete. SATURATED LIQUID PRESSURE Subcooling = Sat. Liquid Temp. - Liquid Line Temp. TEMPERATURE CHART Liquid Saturated Liquid Heat Pump - Heating Cycle Pressure Temperature °F... -
Page 28: Checking Expansion Valve Operation
SERVICING If it takes more than seven (7) minutes to equalize, the restriction device is inoperative. Replace, install a liquid line drier, evacuate and recharge. Checking expansion valve operation 1. Remove the remote bulb of the expansion valve from Checking Restricted Liquid Line the suction line. -
Page 29: Reversing Valve Replacement
SERVICING 1. Remove compressor discharge line strainer. 2. Remove the liquid line drier and expansion valve. 3. Purge all remaining components with dry nitrogen or carbon dioxide until clean. 4. Install new components including liquid line drier. NOTICE 5. Braze all joints, leak test, evacuate, and recharge Violation of EPA regulations may result in fines or other system. -
Page 30: Checking External Static Pressure
SERVICING Checking Temperature Rise Temperature rise is related to the BTUH output of the unit and the amount of air (CFM) circulated over the heat Checking External Static Pressure exchanger. The minimum and maximum allowable duct static pressure is found in the Technical Information Manual. All units are designed for a given range of temperature increase. -
Page 31: Wiring Diagrams
WIRING DIAGRAMS PACKAGE SYSTEM WIRING DIAGRAM - 1 STAGE ELECTRIC HEAT TYPICAL HP ROOM THERMOSTAT SEE NOTE 1 #18 GAUGE 7 WIRE PACKAGE UNIT REQUIRED FOR LOW VOLTAGE HEAT PUMPS JUNCTION BOX YELLOW GREEN ORANGE WHITE BLUE OUTDOOR THERMOSTAT CLOSE ON TEMPERATURE FALL PACKAGE SYSTEM WIRING DIAGRAM - 2 STAGE ELECTRIC HEAT ABOVE 10 KW TYPICAL HP... - Page 32 WIRING DIAGRAMS PACKAGE SYSTEM WIRING DIAGRAM - HEAT PUMPS ONLY! TWO-STAGE ELECTRIC HEAT ABOVE 10 kW TYPICAL H/P ROOM THERMOSTAT #18 GAUGE 8 WIRE PACKAGE HEAT PUMP YELLOW GREEN OUTDOOR THERMOSTAT #2 (IF USED, SEE NOTE 1) ORANGE WHITE BROWN BLUE OUTDOOR THERMOSTAT #1 LOW VOLTAGE...
- Page 33 WIRING DIAGRAMS HTR2 HTR1 HTR1 TL L1 L2 ONE (1) ELEMENT ROWS TWO (2) ELEMENT ROWS 5 KW 10 KW HTR1 HTR1 TL HTR2 HTR2 HTR3 HTR3 TL HTR4 L2 L1 L2 THREE (3) ELEMENT ROWS FOUR (4) ELEMENT ROWS L1 L2 15 KW 20 KW...
- Page 34 WIRING DIAGRAMS Economizer 24VAC/DC ROOM THERMOSTAT Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
- Page 35 WIRING DIAGRAMS A/GPC14[24-60]M41A* PLM-P NOTE 3 SEE NOTE 1 208-230/1/60 PLF-P SEE NOTE 7 RCCF LVJB SEE NOTE 4 LVTB THERMOSTAT NOTE 5 CONTROL PLF-C COMP SUPPLY VOLTAGE 208-230/1/60 SEE NOTE 1 CH & CHS OPTIONAL @ L1,L2, SEE NOTE 6 SEE NOTE 6 PLM-B L G N...
- Page 36 WIRING DIAGRAMS A/GPH14[24-48]M41A* COMP SEE NOTE 6 NOTES 7 AND 8 SEE NOTE 1 NOTE 3 PLF-P 208/230/1/60 PLM-P LVDR 0-RV C-RV HVDR SEE NOTE 4 RCCF LVJB LVTB THERMOSTAT SEE NOTE 5 PLF-C CONTROL PLF-H SUPPLY VOLTAGE 208-230/1/60 SEE NOTE 2 SEE NOTE 1 PLM-B COMP...
- Page 37 WIRING DIAGRAMS A/GPH1460M41A* COMP SEE NOTE 6 SEE NOTE 1 NOTE 3 BK PU PLF-P 208/230/1/60 PLM-P LVDR 0-RV C-RV HVDR SEE NOTE 7 CONTROL NOTE 4 RCCF LVJB THERMOSTAT LVTB SEE NOTE 5 PLF-C PLF-H SUPPLY VOLTAGE 208-230/1/60 PLM-B SEE NOTE 2 SEE NOTE 1 COMP...
- Page 38 WIRING DIAGRAMS APH16[24-48]M41A* THERMOSTATS HUMIDISTAT E\W1 2 Y / OUTDOOR HEATPUMP C ON DENSER HEATER 24 VAC PLEASEREFER TO MANUAL FO R PROPER DIP SWITCH (CFM) CONFIGURATION. F 3A Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
- Page 39 WIRING DIAGRAMS APH1660M41 NOTE 7 YL/PK YL/PK SEE NOTE 4 NOTE 6 PLF 2 NOTE 5 LVDR 0-RV LVJB C-RV PLF 1 HVDR RCCF CONTROL SEE NOTE 2 REPLACE BL/PK BL/PK JUMPER WITH SMOKE/FIRE DETECTOR COMP NOTE 6 COMPONENT LEGEND FACTORY WIRING LINE VOLTAGE CONTACTOR...
- Page 40 WIRING DIAGRAMS GPH16[24-48]M41A* Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
- Page 41 WIRING DIAGRAMS GPH1660M41 SEE NOTE 7 3 CSR YL/PK YL/PK SEE NOTE 4 NOTE 6 PLF 2 NOTE 5 LVDR 0-RV LVJB C-RV PLF 1 HVDR RCCF CONTROL SEE NOTE 2 REPLACE BL/PK BL/PK JUMPER WITH SMOKE/FIRE DETECTOR COMP NOTE 6 COMPONENT LEGEND FACTORY WIRING CONTACTOR...
- Page 42 Please fill out the feedback form on one of the following links: Goodman Brand Products: (http://www.goodmanmfg.com/about/contact-us). ® Amana Brand Products: (http://www.amana-hac.com/about-us/contact-us). ® You can also scan the QR code on the right for the product brand you purchased to be directed to the feedback page. GOODMAN BRAND ®...