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Service and Troubleshooting

AVZC18 Inverter Heat Pump Condenser Units with R-410A Refrigerant

Blowers, Coils, & Accessories

2017, 2019, 2021 Goodman Manufacturing Company, L.P.

RS6215001r5

January 2021

is a registered trademark of Maytag Corporation or its related companies and is used under license.

TABLE OF CONTENTS

IMPORTANT INFORMATION ............................................. 2

PRODUCT IDENTIFICATION ............................................ 4

SYSTEM OPERATION ....................................................... 5

SERVICING ........................................................................ 9

CHECKING VOLTAGE ................................................. 9

CHECKING WIRING ..................................................... 9

CHECKNG THERMOSTAT, WIRING ........................... 9

THERMOSTAT AND WIRING ....................................... 9

CHECKING TRANSFORMER AND CONTROL

CIRCUIT ......................................................................... 9

CHECKING HIGH PRESSURE SWITCH .................. 10

CHECKING INDOOR AND OUTDOOR HI/LOW

PRESSURE SENSOR................................................. 10

CHECKING COMPRESSOR ...................................... 10

COMPRESSOR WINDING INSULATION TEST ....... 11

GROUND TEST ........................................................... 11

TESTING TEMPERATURE SENSORS AND EEV

COIL RESISTANCE..................................................... 12

TESTING EEV COIL RESISTANCE .......................... 12

TESTING REVERSING VALVE .................................. 12

AVPEC* HEATER CONTROL ..................................... 13

REFRIGERATION REPAIR PRACTICE .................... 14

LEAK TESTING (NITROGEN OR NITRO-

GEN-TRACED) ............................................................ 14

STANDING PRESSURE TEST (RECOMMENDED) . 14

EVACUATION .............................................................. 15

CHARGING .................................................................. 16

FINAL CHARGE ADJUSTMENT ................................ 16

CHECKING COMPRESSOR EFFICIENCY .............. 16

CHECKING SUBCOOLING ........................................ 16

NON-CONDENSABLES .............................................. 17

COMPRESSOR BURNOUT ....................................... 17

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 responsi-

bility for any injury or property damage which may re-

sult. In addition, in jurisdictions that require one or more

licenses to service the equipment specified in this manual,

only licensed personnel should servise 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.

WARNING

PROP 65 WARNING

FOR CALIFORNIA CONSUMERS

Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

0140M00517-A

For service information related to the Bluetooth® Shared

Data Loader BTSDL01 referenced in this manual, please

refer to the installation instructions for the BTSDL01 at

www.coolcloudhvac.com/loaderuserguide

Содержание AVZC18 Series

Страница 1: ...ce 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 instrume...

Страница 2: ...ING OR DEATH NEVER PURGE REFRIGERANT INTO AN ENCLOSED ROOM OR SPACE BY LAW ALL REFRIGERANTS MUST BERECLAIMED IFAN INDOOR LEAKIS SUSPECTED THOROUGHLY VENTILATE THE AREA BEFORE BEGINNING WORK LIQUID REF...

Страница 3: ...hich insulates them from the housing and maintains the pressure tight integrity of the hermetic compressor The terminals and their dielectric embedment are strongly constructed but are vulnerable to c...

Страница 4: ...re ready 036 3 0 ton 048 4 0 ton SEER 060 5 0 ton 18 SEER 20 SEER Nomenclature A V P E C 25 B 1 4 AA Brand Engineering A Amana Brand Major Minor Revision Unit Applica on Refrigerant Charged V Mul Posi...

Страница 5: ...proceeds through the coil cooling the indoor coil down to about 48 F Heat is continually being transferred to the cool fins and tubes of the indoor evaporator coil by the warm system air This warming...

Страница 6: ...unit BOOST MODE is ON by default and is activated when the outdoor temperature reaches 105 F BOOST MODE can be disabled and enabled and the activation temperature adjust ed in BOOST TEMP menu using th...

Страница 7: ...enu COOL SETUP If ON the Dehumidification menu should be visible in the main menu Verify the cooling airflow profile is set to Profile D See the Cool Set up section of the Installation Man ual for com...

Страница 8: ...er Tli Thermistor Tgi Thermistor HP LP ID HP LP Sensor Filter Dryer Access Tube Filter LEGEND Tl Thermistor Outdoor Liquid Temperature Td Thermistor Discharge Temperature Tb Thermistor Defrost Sensor...

Страница 9: ...icating Thermostat Wiring The maximum wire length for 18 AWG thermostat wire is 250 feet THERMOSTAT AND WIRING LINE VOLTAGE NOW PRESENT WARNING With power ON thermostat calling for cooling heating 1 U...

Страница 10: ...I LOW pressure sensor senses the suction pressure in cooling mode and the discharge pressure in heating mode Follow the following sequence to check the pressure sensor With Power ON LINE VOLTAGE NOW P...

Страница 11: ...has a terminal on the top The 5 ton compressor has the terminals on the side If the insulation resistance of the compressor is less than 100k Ohms between U to ground V to ground W to ground replace...

Страница 12: ...ve the same symptoms as bad compressor valves or broken scroll flanks The temperature between true suction and the suction line after the valve should not be greater than 4 degrees Note The center tub...

Страница 13: ...f a demand for electric heat is re ceived the control will provide a 24VAC output for up to two electric heat sequencers TROUBLESHOOTING MOTOR CONTROL CIRCUITS HIGH VOLTAGE Disconnect ALL power before...

Страница 14: ...s of various sizes is proportional to the size of the tube Tubes of smaller size require less heat to bring the tube to braz ing temperature before adding brazing alloy Applying too much heat to any t...

Страница 15: ...eading of the vacuum in the system NOTE Never use the system compressor as a vacuum pump or run when under a high vacuum Motor damage could occur The triple evacuation method is recommended 1 Evacuate...

Страница 16: ...ort CAREFUL Watch so that liquid refrigerant does not enter the compressor FINAL CHARGE ADJUSTMENT The outdoor temperature must be 65 F to 105 F If out door ambient temperature is out of range charge...

Страница 17: ...it is operating at 100 capacity or 100 compressor speed in CHARGE MODE Compressor speed is displayed under STATUS menu in the thermostat 1 Run system at least 20 minutes to allow pressure to stabilize...

Страница 18: ...ust be brazed on by the installer onsite Ensure the bi flow filter drier pain finish is intact after brazing If the paint of the steel filter drier has been burned or chipped repaint or treat with a r...

Страница 19: ...igerant lines must not touch wall Strap Sleeve Strap Sleeve Wire Tie Wire Tie PVC Pipe Caulk Outside Wall Armaflex Wrapped Suction Line Liquid Line Wood Block Between Studs IMPORTANT Refrigerant lines...

Страница 20: ...are securely anchored Strapping placed around the suction line only SECTION 3 OUTDOOR UNIT IS ABOVE THE INDOOR UNIT 1 Gas line must be sloped continuously towards the indoor unit 2 The maximum elevati...

Страница 21: ...be installed in a manner to prevent liquid migration to the outdoor unit from the indoor unit The heat pump condenser unit is shipped with a predetermined factory charge level as shown in the followi...

Страница 22: ...he inlet of the unit Negative Pressure 2 Measure the static pressure of the supply duct Positive Pressure 3 Add the two 2 readings together 4 Consult unit nameplate for quantity of air Checking Static...

Страница 23: ...djusted blower speeds The Specification Sheet applicable to your model provides an airflow table showing the relationship between airflow CFM and external static pressure E S P NOTE Upon start up in c...

Страница 24: ...TO ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY SERVICE OR MAINTENANCE WARNING Refer to the Troubleshooting Chart at the end of this man ual for assistance in determining the sou...

Страница 25: ...GE TRIP OR OVER TEMPERATURE TRIP Voltage or Temperature Trip b7 INCOMPLETE PARAMETER SENT TO MOTOR Incomplete Parameters Sent to Motor b9 LOW INDOOR AIRFLOW Minor Error Code without EH mode No Display...

Страница 26: ...keep showing error code indoorunit In theevent indooruniterrorcodeto solvethe For example if the CFM is 1240CFM 7 segmentdisplayshows show current status of state error code and air ow 7 Segment LED...

Страница 27: ...eduringdefrostopera onin normalmode 2 digit7 segmentdisplaysshowstate dF errorcodeandair owstatus 2 Error code 3 Air ow 3 Whentheunitis havingsomeminorerrorcodein normalmode 2 digit7 segmentdisplayssh...

Страница 28: ...isplay DISPLAY The display consists of 2 digits DISPLAY BUTTON LAYOUT The display buttons shown can be used to navigate and select items FAULT CODE HISTORY NAVIGATION This mode will allow the user to...

Страница 29: ...SERVICING 29 SETTING THE MODE DISPLAY...

Страница 30: ...on the network Populate shared data set using Bluetooth Shared Data Loader BTSDL01 d1 E_d1 Invalid Data On Network INVALID DATA Invalid Data on Network Wrong shared data on the network Populate share...

Страница 31: ...Combination mistake of outdoor unit and indoor unit Check for obstruction on the fan motor Check ductwork filter for blockage clean filters Remove obstruction Verify all registers are fully open Check...

Страница 32: ...e in hours Displays the defrost temperature sensor and outdoor liquid temperature sensor reading Displays the low pressure sensor reading which is taken slightly upstream of the suction accumulator an...

Страница 33: ...vailable to permanently engage BOOST MODE SUBMENU ITEM INDICATION USER MODIFIABLE OPTIONS COMMENTS System Verification Test SYSTEMTEST ON or OFF System Verification Test must be run after installation...

Страница 34: ...range selected in the COOL RPS RANGE menu Select the appropriate compressor RPS for the installed system configuration SUBMENU ITEM USER MODIFIABLE OPTIONS COMMENTS HT Reset YES or NO Selecting to def...

Страница 35: ...ays The 7 segment displays on indoor control board will display EE 1 HEATING EMERGENCY MODE Emergency Heating mode is to be used when commu nication between the indoor unit and thermostat is not funct...

Страница 36: ...15 ON OFF ON ON Sixth X 19 20 20 ON OFF ON OFF Seventh X X X 25 ON OFF OFF ON Switch Bank DS 3 Indoor Control Board Settings Heater Kit Selection Heater kW Dip Switch Setting NOTE Default factory sett...

Страница 37: ...Fan Only Speed During operation the indoor unit will provide constant airflow as selected even if the compressor has stopped The indoor unit will continue to operate the electronic expansion valve for...

Страница 38: ...Enable 16 OFF No Use 17 ON Emergency EEV Opening 18 OFF Emergency EEV Opening 19 OFF EEV Emergency Mode 20 OFF No Use 21 OFF Emergency mode Cooling and Hea ng Emergency Mode 22 OFF Emergency mode Cool...

Страница 39: ...ired when selecting a cooling airflow Note the blower will run continuously with this wiring which is required The outdoor unit will cycle as described in the Cooling Emergen cy Mode section when appr...

Страница 40: ...sponding Screen within the display itself which allows the user to navigate and use the features Example The Fault Code is accessed and displayed from Screen 0 of the 7 segment display The Fault Histo...

Страница 41: ...t fault To access hold the RECALL button for 5 seconds at screen 0 To access hold the RECALL button for 5 seconds at screen 1 To access hold the RECALL button To access hold the RECALL and TEST button...

Страница 42: ...allow the user to see the six most recent system faults For a list of the fault codes please see the TROUBLESHOOTING tables in this document 1 SCREEN 0 SCREEN 1 The display will change to SCREEN 1 Di...

Страница 43: ...Press RECALL Item number Display flickers at 1 second intervals Value MONITORING MODE NAVIGATION SCR This screen allows the user to monitor system variables as shown in the tables at the end of this s...

Страница 44: ...n in the tables at the end of this section SCREEN 0 Press RECALL Press RECALL to increase the value Press TEST to change setting Press RECALL Press TEST to complete setting and return to setting mode...

Страница 45: ...CALL Press TEST to change setting Press RECALL Press TEST to complete setting and return to setting mode Press RECALL Press RECALL Press RECALL SCREEN 0 OFF ON Blink interval 0 4 sec On 0 4 sec Off Pr...

Страница 46: ...tart up 3 Oil Return Operation 4 Heating Operation 5 Defrost Operation 6 Cooling Operation 3 Compressor Reduction Mode 0 OFF 1 ON 4 demand unit Cut off the decimal first place 5 act demand unit Cut of...

Страница 47: ...12 4 3 10 15 5 0 4 Cool Profile 0 A 2 C 1 B 3 D 5 Cool ON Delay 0 5sec 2 20sec 1 10sec 3 30sec 6 Cool OFF Delay 0 30sec 2 90sec 1 60sec 3 120sec 7 Dehumidfication Select 0 ON 1 OFF 8 Heat Airflow Trim...

Страница 48: ...1 Outdoor Lower 2 Indoor Lower 4 System Verification Test 0 ON 1 OFF 7 Force Defrost Cycle 0 ON 1 OFF 8 Pump Down 0 ON 1 OFF 9 Charge Mode 0 ON 1 OFF 10 Maximum Compressor RPS for Cooling 11 Maximum...

Страница 49: ...o way digital communications is accomplished using only two wires The thermostat and subsystem controls are powered with 24 VAC Thus a maximum of 4 wires be tween the equipment and thermostat is all t...

Страница 50: ...un SYSTEM TEST in under 20 F ambient temperature the unit may not be able to complete the test due to low suction pressure In such a case re run the SYSTEM TEST when the ambient tem perature exceeds 2...

Страница 51: ...er password The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom 6 Select YES to continue 7 From the ComfortNet US...

Страница 52: ...system test to run for its duration 5 15 minutes EQUIP TEST SCREEN will show the system test is ON once selected System test will operate the outdoor unit and the indoor unit through a series of star...

Страница 53: ...ar SET THERMOSTAT TO CHARGE MODE Please follow the following sequence to enter CHARGE Mode CHARGE mode allows for charging of the system System operates for a duration of approximately one hour while...

Страница 54: ...Enter Installer password The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom 4 Select YES to continue 5 Select H...

Страница 55: ...HEAT MODE from the SYSTEM menu on the main screen If charging is not complete after 1 hour repeat 7 and 8 Refer to S 103 for refrigerant charge level adjustment 9 To terminate CHARGE MODE select CHARG...

Страница 56: ...using thermostat Maximum compressor speed can be changed to get the required capacity or efficiency Once the maxi mum speed is set the system operates between the set maximum speed and default low sp...

Страница 57: ...HEAT RPS RANGE Press Cool RPS Range for cooling mode or HEAT RPS RANGE heating mode to select the range in which the desired Maximum compressor speed falls Menu ComfortNet User Menu Changing these se...

Страница 58: ...tat schedule as desired Set Thermostat to Adjust Indoor Air CFM trim 1 On the HOME screen select MENU 2 From the MENU screen select COMFORTNET USER MENU HOME FAN SYSTEM MENU Security Se ngs Dealer Inf...

Страница 59: ...assword The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom 4 Select YES to continue 5 Select HEAT PUMP 6 Select...

Страница 60: ...Low low speed cooling Heat Airflow Trim Hi high speed heating Heat Airflow Trim Int intermediate speed heating Heat Airflow Trim Low low speed heating Under each trim setting the airflow can be incre...

Страница 61: ...FROST 1 Please follow the sequence 1 to 6 of Set Thermostat To Adjust Indoor Air CFM trim 2 Select Cool Set up for Cool Airflow Profile Cool ON Delay or Cool OFF Delay Heat Set up for Heat ON Delay or...

Страница 62: ...wait another 6 minutes before starting another force defrost cycle 1 On the HOME screen select MENU 2 From the MENU screen select COMFORTNET USER MENU 3 Enter Installer password The password is the D...

Страница 63: ...SERVICING 63 CTK04 ADDENDUM 5 Select HEAT PUMP 6 Select EQUIP TEST 7 Select FORCE DF CYCLE 8 Select ON Press DONE to initiate FORCE DEFROST CYCLE...

Страница 64: ...the gas valve and liquid service valve should be opened NOTE Manufacturer recommends to set PUMP DOWN using 7 segment display For more information see section Set 7 segment mode display to PUMP DOWN I...

Страница 65: ...SERVICING 65 CTK04 ADDENDUM 4 Select YES to continue 5 Select HEAT PUMP 6 Select MAINTENANCE 7 Select PUMP DOWN...

Страница 66: ...s service valve immediately 9 To terminate PUMP DOWN select PUMP DOWN screen again Press OFF Press DONE to terminate PUMP DOWN 10 Once PUMP DOWN is set navigate to HOME screen After finishing PUMP DOW...

Страница 67: ...r information on how to set 7 segment display see the section SETTING THE MODE DISPLAY in this manual 2 Approximately one minute later the compressor should start operating Check the amperage at the c...

Страница 68: ...re lock outs during the initial thermostat set up This will enable the compressor to be turned off and switch heating source from refrigeration to auxiliary secondary heating under low ambient conditi...

Страница 69: ...er X X X X X X Outdoor Ambient temp is too high X X X X X X Outdoor Ambient temp is too low X X X X X X X X X X ID suction temp is too high X X X X X ID suction temp is too low X X X Mixture of non co...

Страница 70: ...X Outdoor Ambient temp is too low X X X X X X X X X ID suction temp is too high X X ID suction temp is too low X X X X X X X X X Mixture of non condensible gas X X X X X X X X X X OD fan motor failur...

Страница 71: ...Faulty control board Noise Check wiring to control board Repair as needed Replace control board if necessary 32 E32 HI TEMP CTRL1 This error indicates the equipment is experiencing high temperature fa...

Страница 72: ...o power supply as specified on rating plate Correct low line voltage condition Contact local utility if needed 43 E43 HIGH LINE VOLT Control detects a high power supply voltage condition High line vol...

Страница 73: ...eeded Check the connection to thermistors Repair replace if needed B0 Eb0 NO ID AIRFLOW The estimated airflow from indoor subsystem is near to 0 CFM Failed indoor blower motor Indoor fan motor not pro...

Страница 74: ...ork traffic The table below indicates the LED status and the corresponding potential problem LEARN button Used to reset the network Press the button for approximately 5 seconds to reset the network LE...

Страница 75: ...42 13 04 1 42 147 37 3 95 13 07 1 42 40 104 10 63 1 22 10 63 1 22 118 68 3 76 10 65 1 22 45 113 8 71 1 04 8 71 1 04 96 13 3 56 8 73 1 05 50 122 7 18 0 89 7 18 0 89 78 29 3 34 7 18 0 89 55 131 5 95 0...

Страница 76: ...128 7 596 148 4 60 8 6 162 57 0 264 87 4 366 110 4 468 0 129 0 600 149 0 62 10 0 164 57 7 266 87 9 368 110 8 470 0 129 3 604 149 5 64 11 3 166 58 4 268 88 4 370 111 2 472 0 129 7 608 150 1 66 12 6 168...

Страница 77: ...299 88 86 84 82 80 78 308 90 88 86 84 82 80 317 92 90 88 86 84 82 326 94 92 90 88 86 84 335 96 94 92 90 88 86 345 98 96 94 92 90 88 354 100 98 96 94 92 90 364 102 100 98 96 94 92 374 104 102 100 98 96...

Страница 78: ...slide the sheet metal plate with the electrical board behind the refrigerant tubing as shown PCB MOUNTING PLATE PCB SLIDE RAIL PCB ASSY INSTALL THE ELECTRICAL BOARD When working on a service port ensu...

Страница 79: ...E THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE PC BOARD 3 MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO TOUCH THE CHAR...

Страница 80: ...E THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE PC BOARD 3 MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO TOUCH THE CHAR...

Страница 81: ...COLOR AMBIENT THERMISTOR SUCTION GR LINE DISCHARGE LIQUID LINE DEFROST COIL CIRCUIT SEG1 SEG2 SEG3 TO TSTAT OR INDOOR UNIT FIELD WIRING SEE NOTE 3 208 230 V 60 HZ NOTES 1 THE POSITION OF THE SELECTOR...

Страница 82: ...C CLASS 2 WIRE SELECTOR SWITCH DS1 DS6 DS6 X1A X3A X15A BS2 X5A X2A BS1 SEG2 SEG1 DS1 DS2 DS3 DS4 DS5 X7A X12A X13A RX LED X8A INDOOR UNIT PCB THERMISTOR HEAT EXCHANGER 1 2 INTEGRATION TYPE MPU CPU L...

Страница 83: ...et up menu on the thermostat and DIP switch on indoor unit control board For more information please see indoor unit I O manual For match up with a 2 ton outdoor unit Heater kit application shall not...

Страница 84: ...of field wiring is required to complete the installation Other components such as a Heating Cooling Thermostat and Outdoor Thermostats are available to complete the installation The system CFM can be...

Страница 85: ...400 23800 32400 48600 66500 71600 ELECTRIC HEATER CAPACITY BTUH FORMULAS Heating Output KW x 3 413 x Corr Factor Actual CFM CFM from table x Corr Factor BTUH KW x 3 413 BTUH CFM x 1 08 x Temperature R...

Страница 86: ...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 AMA...

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