Goodman Mfg MVC95 Troubleshooting & Maintenance, Follow the manufacturer’s directions for service

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TROUBLESHOOTING & MAINTENANCE

RESETTINGFROMLOCKOUT

Furnace lockout results when a furnace is unable to achieve igni- tion after three attempts during a single call for heat. It is charac- terized by a non-functioning furnace and a E0 code displayed on the dual 7-segment display. If the furnace is in “lockout”, it will (or can be) reset in any of the following ways.

1.Automatic reset. The integrated control module will automatically reset itself and attempt to resume normal operations following a one hour lockout period.

2.Manual power interruption. Interrupt 115 volt power to the furnace.

3.Manual thermostat cycle. Lower the thermostat so that there is no longer a call for heat for 1 -20 seconds then reset to previous setting.

NOTE: If the condition which originally caused the lockout still exists, the control will return to lockout. Refer to theTroubleshooting Chart for aid in determining the cause.

MAINTENANCE

WARNING

TO AVOID ELECTRICAL SHOCK, INJURY OR DEATH, DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY MAINTENANCE. IF YOU MUST HANDLE THE IGNITER, HANDLE WITH CARE. TOUCHING THE IGNITER ELEMENT WITH BARE FINGERS, ROUGH HANDLING OR VIBRATION COULD DAMAGE THE IGNITER RESULTING IN PREMATURE FAILURE. ONLY A QUALIFIED SERVICER SHOULD EVER HANDLE THE IGNITER.

ANNUALINSPECTION

The furnace should be inspected by a qualified installer, or service agency at least once per year. This check should be performed at the beginning of the heating season. This will ensure that all fur- nace components are in proper working order and that the heating system functions appropriately. Pay particular attention to the fol- lowing items. Repair or service as necessary.

•Flue pipe system. Check for blockage and/or leakage. Check the outside termination and the connections at and internal to the furnace.

•Heatexchanger. Checkforcorrosionand/orbuildupwithin the heat exchanger passageways.

•Burners. Check for proper ignition, burner flame, and flame sense.

•Drainage system. Check for blockage and/or leakage. Check hose connections at and internal to furnace.

•Wiring. Check electrical connections for tightness and/ or corrosion. Check wires for damage.

•Filters.

FILTERS

CAUTION

TO ENSURE PROPER UNIT PERFORMANCE, ADHERE TO THE FILTER SIZES GIVEN IN THE RECOMMENDED MINIMUM FILTER SIZE TABLE OR SPECIFICATION SHEET APPLICABLE TO YOUR MODEL.

FILTERMAINTENANCE

Improper filter maintenance is the most common cause of inad- equate heating or cooling performance. Filters should be cleaned (permanent) or replaced (disposable) every two months or as re- quired. When replacing a filter, it must be replaced with a filter of the same type and size.

FILTER REMOVAL

Depending on the installation, differing filter arrangements can be applied. Filters can be installed in either the central return register or a side panel external filter rack (upflow only). Amedia air filter or electronic air cleaner can be used as an alternate filter. Follow the filter sizes given in the Recommended Minimum Filter size table to ensure proper unit performance.

To remove filters from an external filter rack in an upright upflow installation, follow the directions provided with external filter rack kit.

HORIZONTAL UNIT FILTER REMOVAL

Filters in horizontal installations are located in the central return register or the ductwork near the furnace.

Toremove:

1.Turn OFF electrical power to furnace.

2.Remove filter(s) from the central return register or ductwork.

3.Replace filter(s) by reversing the procedure for removal.

4.Turn ON electrical power to furnace.

MEDIA AIR FILTER OR ELECTRONIC AIR CLEANER REMOVAL

Follow the manufacturer’s directions for service.

BURNERS

Visually inspect the burner flames periodically during the heating season. Turn on the furnace at the thermostat and allow several minutes for flames to stabilize, since any dislodged dust will alter the flames normal appearance. Flames should be stable, quiet, soft, and blue (dust may cause orange tips but they must not be yellow). They should extend directly outward from the burners without curling, floating, or lifting off. Flames must not impinge on the sides of the heat exchanger firing tubes.

INDUCEDDRAFTANDCIRCULATORBLOWERS

The bearings in the induced draft blower and circulator blower mo- tors are permanently lubricated by the manufacturer. No further lubrication is required. Check motor windings for accumulation of dust which may cause overheating. Clean as necessary.

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Contents Type FSP Category IV Direct or Non Direct Vent Air Furnace Product Description Normal Sequence of Operation Troubleshooting Safety Precautions What to do if YOU Smell GASProduct Description & Application ElectrostaticdischargeesdprecautionsTotheinstaller ShippinginspectionProductapplication FeaturesProduct Description Location Requirements & Considerations Existingfurnaceremoval ClearancesandaccessibilityFurnacesuspension Thermostatlocation Installation PositionsCombustion & Ventilation AIR Requirements HorizontalFurnace AlternateVent/FlueLocation RecommendedInstallationPositionsHorizontal Applications & Considerations Propane GAS/HIGH Altitude Installations VENT/FLUE Pipe & Combustion AIR PipeTerminationlocations MaterialsandjoiningmethodsPROPERVENT/FLUEANDCOMBUSTIONAIRPIPINGPRACTICES Canadianventingrequirements Increased Clearance ConfigurationVent Termination Clearances StandardfurnaceconnectionsVent/FluePipeCuts AlternatefurnaceconnectionsRemove Pipe Relocate Upflow NON-DIRECTVENTSINGLEPIPEPIPINGHorizontalTerminationSinglePipe Vertical Termination Single PipeAlternate Vertical Termination Single Pipe DirectventdualpipepipingVertical Terminations Dual Pipe Standard Horizontal Terminations Dual PipeConcentricventtermination Alternate Horizontal Vent Termination Dual PipeHorizontalVentingOfMultipleUnits Side Wall Vent KITStandardrightorleftsidedrainhoseconnections Condensate Drain Lines & Drain TrapHose and Tube Identification UPRIGHTINSTALLATIONS-TRAPONRIGHTSIDE Drain Trap MountingExternally UPRIGHTINSTALLATIONS-TRAP on Leftside Horizontalinstallations Counterflow furnacesCut Junctionbox Relocation WiringharnessElectrical Connections 115VOLT Line ConnectionsSINGLE-STAGE Heatingthermostatapplication Thermostat Wiring Diagrams24VOLTTHERMOSTATWIRING Accessory load specifications are as follows Fossilfuelapplications24VOLTHUMIDIFIER Accessories WiringGAS Supply and Piping HighaltitudederateGaspipingconnections Natural Gas Capacity of Pipe Cubic Feet of Gas Per Hour CFHHorizontal Upflow Model Gas Piping ConnectionsPropanegastanksandpiping PropaneGasInstallationTypCoupling Degree elbow Inch close nipple Duct Work -AIR Flow Propane Gas Piping ChartCirculating AIR & Filters Checking Duct StaticDuctFlangeCutOuts Consult proper tables for the quantity of airChecking Static Pressure 80% Furnace Shown, 90% Similar BottomreturnairopeningupflowmodelsFollowing figure shows possible filter locations Startup Procedure & AdjustmentStartup Procedure &ADJUSTMENT If you smell gas after five minutes, immediately follow TemperatureSet the thermostat to the lowest setting White-Rodgers Model 36G54 Two-StageHoneywell Model VR9205 Connected to Manometer GasmanifoldpressuremeasurementandadjustmentTurn on the gas supply Measuring Inlet Gas Pressure Alt. MethodTemperaturerise GasinputratemeasurementnaturalgasonlyTemperature Rise Measurement CirculatorblowerspeedsAirflowTable Comfortnet System Heat Off Delay DipswitchesBlowerheat Offdelay Timings OverviewSystem Wiring using Four-Wires System System OperatingPear. Use Touch To step through the list of installed equipComfortnetsystemadvancedfeatures Value. TouchConfiguration Networktroubleshooting Is 30 seconds Non-CT compatible single stage AC unitNormal Sequence of Operation SystemtroubleshootingPower UP HeatingmodeFanonlymode Operational Checks & Safety Circuit DescriptionCoolingmode Troubleshooting Troubleshooting & Maintenance Operational ChecksSafety Circuit Description Follow the manufacturer’s directions for service Troubleshooting & MaintenanceMaintenance Induced Draft Blower Transformer Door Switch Before Leaving AN InstallationRepair and Replacement Parts MiscellaneousDIP Switches BankTroubleshooting Chart InternalLimit Chart MessageInvalid Trips Status Codes Wiring Diagram CVC9AA, *MVC95AACVC9AB, *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.
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