Goodman Mfg CVC9/95, MVC95 installation instructions Troubleshooting Chart, Internal

Page 53

 

 

Symptoms of Abnormal Operation (Legacy

 

 

Diagnostic/Status

 

 

 

 

 

ComfortNet™

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fault Description

 

 

Thermostat Only

 

 

Possible Causes

 

 

Corrective Actions

 

 

 

Notes & Cautions

 

 

 

 

& ComfortNet™ Thermostat)

 

 

LED Codes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Message

Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ Furnace fails to operate

 

None

ξ

No 115 power to furnace

 

INTERNAL

EE

ξ

Manual disconnect switch OFF,

ξ

Assure 115 and 24 volt power to

 

ξ Turn power OFF prior to

 

 

ξ Integrated control module LED display

 

 

 

 

or no 24 volt power to

 

FAULT

 

 

 

door switch open or 24 volt wire

 

furnace and integrated control

 

 

repair.

 

 

 

provides no signal.

 

 

 

 

integrated control

 

 

 

 

 

improperly connected or loose

 

module.

 

ξ

Replace integrated control

 

 

ξ ComfortNet™ thermostat “Call for

 

 

 

 

module

 

 

 

 

ξ

Blown fuse or circuit breaker

ξ

Check integrated control module

 

 

module fuse with 3A

 

 

 

Service” icon illuminated

 

 

 

ξ Blown fuse or circuit

 

 

 

 

ξ

Integrated control module has an

 

fuse (3A). Replace if necessary.

 

 

automotive fuse.

 

 

ξ ComfortNet™ thermostat scrolls “Check

 

 

 

 

breaker

 

 

 

 

 

internal fault

ξ

Check for possible shorts in 115

 

ξ

Read precautions in

 

 

 

Furnace” message

 

 

 

ξ

Integrated control

 

 

 

 

 

 

 

 

and 24 volt circuits. Repair as

 

 

“Electrostatic Discharge”

 

 

 

 

 

 

 

 

 

module has an internal

 

 

 

 

 

 

 

 

necessary.

 

 

section of manual.

 

 

 

 

 

 

 

 

 

fault

 

 

 

 

 

 

 

ξ

Replace bad integrated control

 

ξ

Replace integrated control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

module.

 

 

module with current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

replacement parts.

 

 

ξ

LED display indicates OP

 

OP

ξ

Normal operation

 

None

None

ξ

Normal operation

ξ

None

 

ξ

Normal operation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Furnace fails to operate

 

E0

ξ Furnace lockout due to

 

LOCKOUT

E0

ξ

Failure to establish flame. Cause

ξ

Locate and correct gas

 

ξ

Turn power OFF prior to

 

 

ξ Integrated control module LED display

 

 

an excessive number of

 

 

 

 

 

may be no gas to burners, front

 

interruption.

 

 

repair.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

provides E0 error code.

 

 

 

 

ignition “retries” (3 total)

 

 

 

 

 

cover pressure switch stuck open,

ξ

Check front cover pressure

 

ξ Igniter is fragile, handle

 

 

ξ ComfortNet™ thermostat “Call for

 

 

 

 

 

 

 

 

 

 

 

bad igniter or igniter alignment,

 

switch operation (hose, wiring,

 

 

with care.

 

 

 

Service” icon illuminated.

 

 

 

 

 

 

 

 

 

 

 

improper orifices, or

 

contact operation). Correct if

 

ξ Sand flame sensor with

 

 

ξ ComfortNet™ thermostat scrolls “Check

 

 

 

 

 

 

 

 

 

 

 

coated/oxidized or improperly

 

necessary.

 

 

emery cloth.

 

 

 

Furnace” message.

 

 

 

 

 

 

 

 

 

 

 

connected flame sensor.

ξ

Replace or realign igniter.

 

ξ

See “Vent/Flue Pipe”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Loss of flame after establishment.

ξ

Check flame sense signal. Sand

 

 

section for piping details.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cause may be interrupted gas

 

sensor if coated and/or oxidized.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

supply, lazy burner flames

ξ

Check flue piping for blockage,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(improper gas pressure or

 

proper length, elbows, and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

restriction in flue and/or

 

termination.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

combustion air piping), front

ξ

Verify proper induced draft

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cover pressure switch opening, or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

blower performance.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

improper induced draft blower

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

performance.

 

 

 

 

 

 

 

 

 

ξ Furnace fails to operate.

 

E1

ξ

Low stage pressure

 

PS1

E1

ξ

Low stage pressure switch

ξ

Replace low stage pressure

 

ξ

Turn power OFF prior to

53

 

ξ Integrated control module LED display

 

 

switch circuit is closed at

 

CLOSED

 

 

 

contacts sticking.

 

switch.

 

 

repair.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

provides E1 error code.

 

 

 

 

start of heating cycle.

 

 

 

 

ξ

Shorts in pressure switch circuit

ξ

Repair short in wiring.

 

ξ

Replace pressure switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ ComfortNet™ thermostat “Call for

 

 

 

 

 

 

 

 

 

 

 

wiring.

 

 

 

 

 

with correct replacement

 

 

 

Service” icon illuminated.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

part.

 

 

ξ ComfortNet™ thermostat scrolls “Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Furnace” message.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Induced draft blower runs continuously

 

E2

ξ

Low stage pressure

 

PS1 OPEN

E2

ξ

Pressure switch hose blocked

ξ

Inspect pressure switch hose.

 

ξ

Turn power OFF prior to

 

 

 

with no further furnace operation.

 

 

switch circuit is not

 

 

 

 

 

pinched, or connected improperly.

 

Repair/replace if necessary.

 

 

repair.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ Integrated control module LED display

 

 

 

 

closed.

 

 

 

 

ξ

Blocked flue and/or inlet air pipe,

ξ

Inspect flue and/or inlet air

 

ξ

Replace pressure switch

 

 

 

provides E2 error code.

 

 

 

 

 

 

 

 

 

 

 

blocked drain system or weak

 

piping for blockage, proper

 

 

with correct replacement

 

 

ξ ComfortNet™ thermostat “Call for

 

 

 

 

 

 

 

 

 

 

 

induced draft blower.

 

length, elbows, and termination.

 

 

part.

 

 

 

Service” icon illuminated.

 

 

 

 

 

 

 

 

 

 

ξ

Incorrect pressure switch set point

ξ

Check drain system. Correct as

 

ξ

Replace induced draft

 

 

ξ ComfortNet™ thermostat scrolls “Check

 

 

 

 

 

 

 

 

 

 

 

or malfunctioning switch

 

necessary.

 

 

blower with correct

 

 

 

Furnace” message.

 

 

 

 

 

 

 

 

 

 

 

contacts.

ξ

Check induced draft blower

 

 

replacement part.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ Loose or improperly connected

 

performance. Correct as

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

wiring.

 

necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ Correct pressure switch set point

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or contact motion.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Tighten or correct wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connection.

 

 

 

 

TROUBLESHOOTING CHART

Image 53
Contents Type FSP Category IV Direct or Non Direct Vent Air Furnace Product Description Normal Sequence of Operation Troubleshooting What to do if YOU Smell GAS Safety PrecautionsTotheinstaller ElectrostaticdischargeesdprecautionsProduct Description & Application ShippinginspectionProductapplication FeaturesProduct Description Location Requirements & Considerations Existingfurnaceremoval ClearancesandaccessibilityFurnacesuspension Thermostatlocation Installation PositionsCombustion & Ventilation AIR Requirements HorizontalFurnace AlternateVent/FlueLocation RecommendedInstallationPositionsHorizontal Applications & Considerations VENT/FLUE Pipe & Combustion AIR Pipe Propane GAS/HIGH Altitude InstallationsTerminationlocations MaterialsandjoiningmethodsPROPERVENT/FLUEANDCOMBUSTIONAIRPIPINGPRACTICES Vent Termination Clearances Increased Clearance ConfigurationCanadianventingrequirements StandardfurnaceconnectionsAlternatefurnaceconnections Vent/FluePipeCutsRemove Pipe Relocate NON-DIRECTVENTSINGLEPIPEPIPING UpflowAlternate Vertical Termination Single Pipe Vertical Termination Single PipeHorizontalTerminationSinglePipe DirectventdualpipepipingStandard Horizontal Terminations Dual Pipe Vertical Terminations Dual PipeHorizontalVentingOfMultipleUnits Alternate Horizontal Vent Termination Dual PipeConcentricventtermination Side Wall Vent KITStandardrightorleftsidedrainhoseconnections Condensate Drain Lines & Drain TrapHose and Tube Identification Drain Trap Mounting UPRIGHTINSTALLATIONS-TRAPONRIGHTSIDEExternally UPRIGHTINSTALLATIONS-TRAP on Leftside Counterflow furnaces HorizontalinstallationsCut Electrical Connections WiringharnessJunctionbox Relocation 115VOLT Line ConnectionsSINGLE-STAGE Heatingthermostatapplication Thermostat Wiring Diagrams24VOLTTHERMOSTATWIRING Fossilfuelapplications Accessory load specifications are as followsGAS Supply and Piping Accessories Wiring24VOLTHUMIDIFIER HighaltitudederateNatural Gas Capacity of Pipe Cubic Feet of Gas Per Hour CFH GaspipingconnectionsGas Piping Connections Horizontal Upflow ModelPropanegastanksandpiping PropaneGasInstallationTypCoupling Degree elbow Inch close nipple Circulating AIR & Filters Propane Gas Piping ChartDuct Work -AIR Flow Checking Duct StaticChecking Static Pressure 80% Furnace Shown, 90% Similar Consult proper tables for the quantity of airDuctFlangeCutOuts BottomreturnairopeningupflowmodelsFollowing figure shows possible filter locations Startup Procedure & AdjustmentStartup Procedure &ADJUSTMENT Set the thermostat to the lowest setting TemperatureIf you smell gas after five minutes, immediately follow White-Rodgers Model 36G54 Two-StageTurn on the gas supply GasmanifoldpressuremeasurementandadjustmentHoneywell Model VR9205 Connected to Manometer Measuring Inlet Gas Pressure Alt. MethodGasinputratemeasurementnaturalgasonly TemperatureriseCirculatorblowerspeeds Temperature Rise MeasurementAirflowTable Blowerheat Offdelay Timings Heat Off Delay DipswitchesComfortnet System OverviewSystem System Operating System Wiring using Four-WiresComfortnetsystemadvancedfeatures Touch To step through the list of installed equipPear. Use Value. TouchConfiguration Is 30 seconds Non-CT compatible single stage AC unit NetworktroubleshootingPower UP SystemtroubleshootingNormal Sequence of Operation HeatingmodeFanonlymode Operational Checks & Safety Circuit DescriptionCoolingmode Troubleshooting Troubleshooting & Maintenance Operational ChecksSafety Circuit Description Follow the manufacturer’s directions for service Troubleshooting & MaintenanceMaintenance Repair and Replacement Parts Before Leaving AN InstallationInduced Draft Blower Transformer Door Switch MiscellaneousBank DIP SwitchesInternal Troubleshooting ChartLimit Message ChartInvalid Trips Status Codes CVC9AA, *MVC95AA Wiring DiagramCVC9AB, *MVC95AB

MVC95, CVC9/95 specifications

Goodman Manufacturing has established itself as a leader in the HVAC industry, and among its stellar lineup, the Goodman CVC9/95 and MVC95 stand out for their remarkable features, technologies, and efficiency.

The Goodman CVC9/95 is a high-performance gas furnace, designed for homeowners seeking reliability and cost-effective heating solutions. It operates with an impressive 95% Annual Fuel Utilization Efficiency (AFUE), which means that a significant portion of the fuel it consumes is converted into heat. This level of efficiency not only contributes to lower energy bills but also reduces greenhouse gas emissions, making it an environmentally friendly choice.

One of the standout features of the CVC9/95 is its multi-speed ECM blower motor. This technology adjusts the airflow according to the heating demands of the home, ensuring consistent and comfortable temperatures. The ECM motor also operates quietly, enhancing the comfort of your living space without the disruptive noise often associated with traditional furnaces.

The MVC95, on the other hand, offers similar efficiency with its also 95% AFUE rating. This model is equipped with a patented ignition system that enhances reliability with minimal maintenance needs. Its durable construction includes a heavy-gauge steel cabinet and an insulated blower compartment that minimizes heat loss. This design not only supports optimal performance but also contributes to its longevity.

Both models come with a self-diagnostic control board that provides straightforward troubleshooting capabilities, making it easier for technicians to ensure that your system is operating at peak performance. This feature aids in timely maintenance, which is crucial for extending the lifespan of the unit.

Additionally, Goodman backs their products with a strong warranty, offering a lifetime limited warranty on the heat exchanger and a 10-year limited parts warranty. This assurance provides homeowners peace of mind regarding their investment.

In the landscape of HVAC solutions, the Goodman CVC9/95 and MVC95 models exemplify a commitment to quality, efficiency, and advanced technology. Whether for new constructions or replacements, these furnaces offer superior heating performance coupled with modern conveniences, making them an invaluable choice for homeowners seeking effective climate control solutions. With their low emissions and high efficiency, choosing Goodman means investing in both comfort and sustainability.