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Service and Troubleshooting

ACVC8*CA/AMVC8*CA & ACVC80*AA/AMVC80*AA

GCVC8*CA/GMVC8*CA & GCVC80*AA/GMVC80*AA

Gas Furnaces

RS6621004r3

October 2020

TABLE OF CONTENTS

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

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

SYSTEM OPERATION ....................................................... 6

SCHEDULED MAINTENANCE ........................................ 24

SERVICING ...................................................................... 27

CHECKING VOLTAGE ............................................... 28

CHECKING WIRING ................................................... 28

CHECKING THERMOSTAT, WIRING ........................ 28

HEATING ANTICIPATOR ............................................ 29

CHECKING TRANSFORMER AND CONTROL

CIRCUIT ....................................................................... 29

CHECKING AIR CIRCULATION BLOWER MOTOR 29

CHECKING DUCT STATIC ......................................... 33

CHECKING TEMPERATURE RISE ........................... 33

CHECKING PRIMARY LIMIT CONTROL .................. 34

CHECKING AUXILIARY LIMIT CONTROL ................ 34

CHECKING FLAME ROLLOUT CONTROL .............. 35

INDUCED DRAFT BLOWER MOTOR ....................... 36

CHECKING GAS VALVE (REDUNDANT) ................. 36

CHECKING MAIN BURNERS .................................... 36

CHECKING ORIFICES ............................................... 37

CHECKING GAS PRESSURE ................................... 37

CHECKING HOT SURFACE IGNITOR ...................... 38

CHECKING FOR FLASHBACK .................................. 39

CHECKING PRESSURE SWITCH............................. 39

HIGH ALTITUDE APPLICATION ................................ 39

CHECKING FOR DELAYED IGNITION ..................... 39

CHECKING INTEGRATED IGNITION

CONTROL BOARDS ................................................... 40

MEMORY CHIPS ......................................................... 41

CHECKING FLAME SENSOR .................................... 41

TROUBLESHOOTING CHART ........................................ 42

WIRING DIAGRAMS ........................................................ 52

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 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.

WARNING

PROP 65 WARNING

FOR CALIFORNIA CONSUMERS

Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

0140M00517-A

Содержание ACVC8 CA Series AMVC8 CA Series

Страница 1: ...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 th...

Страница 2: ...s necessary to avoid the danger of CO poisoning which can occur if a carbon monoxide producing device continues to operate in the enclosed area Carbon monoxide emissions can be re circulated throughou...

Страница 3: ...nez pas a rejoindre votre fournisseur de gaz C N utiliser que votre main pour pousser ou tourner le commande du gaz N utilisez jamais d outils Si vous ne parvenez pas a pousser ou a tourner la command...

Страница 4: ...tion M Upflow Horizontal Major Revision C Downflow Horizontal A Initial Release K Dedicated Upflow B 1st Revision D Dedicated Downflow Nox Motor N Natural Gas V Variable Speed X Low NOx E High Efficie...

Страница 5: ...ht Induced Draft Nidec multi speed ECM motor Aluminized Steel tubular heat exchanger 115 volt silicon nitride igniter Left or right gas entry GMVC80 X GMVC800603BX AA GMVC800604BX AA GMVC800803BX AA G...

Страница 6: ...wer door For direct vent applications the cabinet opening to the junction box must be sealed air tight using either an UL approved bushing such as Heyco Liquid Tight or by applying non reactive UL app...

Страница 7: ...call Y or Y G this initial cooling call after the power is turned on will run the outdoor unit at full capacity until the call is removed Use this mode for charging If system is running low stage coo...

Страница 8: ...the algorithm records a strike against the gas furnace this strike is important when looking at the Under Target Threshold 4 Under Target Threshold 7 segment menu Utt If the furnace is able to satisfy...

Страница 9: ...920 3 6 1440 4 9 1960 1 1 440 2 4 960 3 7 1480 5 2000 1 2 480 2 5 1000 3 8 1520 5 1 2040 1 3 520 2 6 1040 3 9 1560 5 2 2080 1 4 560 2 7 1080 4 1600 5 3 2120 1 5 600 2 8 1120 4 1 1640 5 4 2160 1 6 640...

Страница 10: ...h either the right or left side panel of the furnace Thermostat wiring entrance holes are located in the blower compartment Thermostat Condensate Switch Main Control Board For gas heat only operations...

Страница 11: ...NS R C G Y 24 VAC Thermostat 1 2 C Heat Pump Optional R C Y This is the only case where setting the thermostat to heat pump mode is acceptable Non communicating Single Stage Heat Pump R C G Y Optional...

Страница 12: ...ket Use Y W G signals Thermostat has a Dehum or Configurable terminal with Dehum option Yes No Does your thermostat have a whole house Dehumidifier setting Install Dehumidistat in living space or retu...

Страница 13: ...heat or to transition back to the heat pump 115 Volt Line Connection of Electronic Air Cleaner WARNING High Voltage To avoid personal injury or death due to electrical shock disconnect electrical pow...

Страница 14: ...r connection will be required for account setup Connecting Phone Application to Furnace When in close proximity to the furnace the phone application will detect the Bluetooth Network being broadcasted...

Страница 15: ...lection the left and right switches are used to browse the main menu and option menus When the center switch is pressed in the main menu the furnace control will go to the option menu and display the...

Страница 16: ...as A06 1150 to 1249 CFM display as A12 Alarm Display If an active alarm is present the alarm code shall be reported in Status Menu starting with E and following with the appropriate two digit alarm co...

Страница 17: ...low tipping In some areas the gas supplier may artificially derate the gas in an effort to compensate for the effects of altitude If the gas is artificially derated the appropriate orifice size must b...

Страница 18: ...eturn duct at the inlet of the furnace Negative Pressure 2 Measure the static pressure of the supply duct Positive Pressure 3 The difference between the two numbers is 4 w c Example 1 0 1 2 3 Differen...

Страница 19: ...re less frequent replacement intervals Avoid using highly restrictive 1 filters which produce static pressure loss greater than 25 W C In some installations the minimum filter size required will not l...

Страница 20: ...ure tap 5 Turn ON the gas supply Follow this procedure to test the gas valve pressure at 100 firing rate Run High Fire It is recommended that the CoolCloud phone application be used for all functional...

Страница 21: ...by adjusting the circulator blower speed Increase blower speed to reduce temperature rise Decrease blower speed to increase temperature rise Refer to Startup Procedure and Adjustment Circulator Blower...

Страница 22: ...ir circulating motor will run on the high heating speed for thirty 30 seconds and then switch to the low heating speed for the remainder of the heat off delay period Circulator blower and electronic a...

Страница 23: ...shuffle your feet do not touch ungrounded objects etc If you come in contact with an ungrounded object repeat step 2 before touching control or wires 4 Discharge your body to ground before removing a...

Страница 24: ...ted by the manufacturer No further lubrication is required Check motor windings for accumulation of dust which may cause overheating Clean as necessary Flame Sensor Qualified Servicer Only Under some...

Страница 25: ...2 164 327 655 1636 37 97 195 486 12 75 150 300 600 1500 38 23 47 95 189 474 13 69 138 277 555 1385 39 92 185 462 14 64 129 257 514 1286 40 22 45 90 180 450 15 60 120 240 480 1200 41 176 439 16 56 113...

Страница 26: ...e gas valve turn downward clockwise to increase pressure and input and upward counterclockwise to decrease pressure and input A properly operating unit must have the BTU per hour input and CFM of air...

Страница 27: ...rked Transformers TRANSFORMER SECONDARY PRIMARY GND C R LINE VOLTAGE L1 HOT LINE VOLTAGE NEUTRAL METER READS 24 VOLTS METER READS 120 VOLTS GND C R N L1 GND C R N L1 READS 96 VOLTS IN PHASE READS 144...

Страница 28: ...d ignition control 6 With the blower motor in operation the voltage should be 115 volts 10 percent 7 If the reading falls below the minimum voltage check the line wire size Long runs of undersized wir...

Страница 29: ...r open door interlock switch 5 Check transformer primary voltage at incoming line voltage connections fuse splices and blower door interlock switch 6 If line voltage is available to the primary side o...

Страница 30: ...ore servicing or installing this unit Multiple power sources may be present Failure to do so may cause property damage personal injury or death To use the diagnostic tool perform the following steps 1...

Страница 31: ...ed from Plug End 5 Measure voltage between pins 4 and 3 Voltage should be approximately zero 6 Measure voltage between pins 5 and 3 Voltage should be the same as the supply voltage to the furnace 7 If...

Страница 32: ...inutes after removing power to allow capacitors to discharge 2 Disassemble motor as described in steps 2 through 4 above 3 Locate the 3 circuit harness from the motor Using an ohmmeter measure the res...

Страница 33: ...supply duct 3 w c total external static pressure on this system 4 w c NOTE Both readings may be taken simultaneously and read directly on the manometer if so desired If an air conditioner coil or Elec...

Страница 34: ...o so may cause property damage personal injury or death 1 Remove burner compartment door to gain access to the primary limit 2 Remove low voltage wires at limit control terminals 3 With an ohmmeter te...

Страница 35: ...Auxiliary Limit Control WARNING To avoid possible fire only reset the auxiliary limit control once If it should open a second time a qualified servicer must determine why the auxiliary limit opened be...

Страница 36: ...ls during the trial for ignition If you have 115V and the motor does not run replace the induced draft motor 6 After completing check and or replacement of induced draft motor reinstall burner compart...

Страница 37: ...s should be checked and adjusted in accordance to the type of fuel being consumed The line pressure supplied to the gas valve must be within the range specified below The supply pressure can be measur...

Страница 38: ...ltage Disconnect ALL electrical power and shut off gas supply before servicing or installing Manifold Gas Pressure Gas Rate Range Nominal Natural Gas High Stage 3 2 to 3 8 w c 3 5 w c Low Stage 1 6 to...

Страница 39: ...mpare the negative pressure to the closing point specified for the particular switch Either the switch is defective or the inducer venting system is inadequate OPEN TO ATMOSPHERE HOSE TO INDUCED DRAFT...

Страница 40: ...out If the control detects a failure it will now be shown on the diagnostic indicator light display Refer to the Abnormal Operation section in the Sequence of Operation section of this manual for more...

Страница 41: ...nd the sensor terminal 3 Be sure the positive side of the meter is to the flame sensor wire and the negative side of the meter is to sensor terminal WARNING Line voltage now present 4 Place the unit i...

Страница 42: ...ment 2 Segment 3 Idle I d L Constant Fan Compressor Cooling Low Stage I Compressor Cooling High Stage Compressor Cooling Single Stage Compressor Heat Low Stage I Compressor Heat High Stage Compressor...

Страница 43: ...Switch Open E d Condensate Switch Open E Grounding Fault E 0 Rollout Switch Open E Redundant Relay Open E Redundant Relay Stuck Closed E d d d d d Status Seven Segment Display Alarm Code Definition Ta...

Страница 44: ...s Heat Name 7 Segment Display Cloud Phone App Idle IdL Idle Constant Fan Constant Fan Compressor Cooling Low Stage Compressor Cooling Low Stage Compressor Cooling High Stage Compressor Cooling High St...

Страница 45: ...humidifier enabling options in different operation modes Ventilation On Time Adjustable between 0 60 minutes The default is 0 minute Off Adjusts the ventilation on time and turn it on off DeHum Logic...

Страница 46: ...12 15 Trims the cooling airflow by the selected amount Cool Trim Factor Low L 15 12 9 6 3 0 3 6 9 12 15 Trims the cooling airflow by the selected amount Cool Airflow Profile A B C D Select cooling air...

Страница 47: ...shorts in 115 circuit Repair as necessary Replace non functional integrated control module Turn pow er OFF prior to repair Read precautions in Electrostatic Discharge section of manual Replace control...

Страница 48: ...if necessary Turn pow er OFF prior to repair Replace igniter w ith correct replacement part Replace control w ith correct replacement part Replace high stage pressure sw itch Repair short in w iring...

Страница 49: ...orrect burner alignment Check correct restriction Turn pow er off prior to service Furnace fails to operate Integrated control module LED display provides error code Data not yet on netw ork o t r o i...

Страница 50: ...ared data set is correct for the specifc model Re populate data using correct memory card if required Turn pow er OFF prior to repair Replace motor w ith correct replacement part Use memory card for t...

Страница 51: ...ol module LED display provides error code Airflow is low er than demanded Blocked filters Restrictive ductw ork Undersized ductw ork Check integrated control module Verify control is populated w ith c...

Страница 52: ...UST BE PERMANENTLY GROUNDED AND CONFORM TO N E C AND LOCAL CODES COLOR CODES 1 SWITCH PRESSURE LOW FIRE SENSOR FLAME GN GREEN GR PRESSURE SWITCH FRONT COVER C VAC TO UNIT MUST BE 1 BL RD AND GROUNDED...

Страница 53: ...ntact 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 BRAN...

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