Thermo Products OH8FA119DV5R, OH8FA119D60R, OH6FA072D48N PSC Trouble Shooting, Diagnostic Features

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PSC TROUBLE SHOOTING

DIAGNOSTIC FEATURES

The control board is equipped with 4 green Input Status LEDs and 1 red Board Status LED. These are intended to provide a quick view into furnace performance without requiring a voltmeter.

The green Input Status LEDs are driven by the “Y”, “W”, “G”, and “DEHUM” inputs and are located directly below those inputs. They will light to indicate the presence of these signals.

The red Board Status LED has two functions:

It will light when the board recognizes a valid input signal and will stay lit until all valid signals are removed. This is intended to show that the board is functioning and able to respond to input signals.

It will flash rapidly while 120VAC is missing from the LIMIT switch. This is intended to give a quick visual indication of the High Limit switch.

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Contents OH6FA072DV4B OH6FA072DV4ROH6FA072DV4N OH6FX072DV4R Contents = Highboy D = Downflow = FrontSafety Section Page Codes and Clearances Combustible materialNon-combustible material Highboy OH6FA072D OH8FA119D II. General Instructions Read Before Start of InstallationType Model NO.1 From Sides Front Unit Furnace TOP Sides of Plenum From Rear FLUE/VENTChimney Proper Chimney SizePrevention of Chimney Condensing Proper Vent Connector PIPE/CHIMNEY Connection Proper Chimney HeightNo Interconnected Chimney Flues Tight CLEAN-OUT Doors and ConnectionsTight Joints Flue Pipe CLEARANCES, Sizing and TypeReduction of Clearances with Specified Forms of Protection Venting Rotation of Front Flue ElbowDraft Regulators Duct WORK/AIR ConditioningAirflow Requirements and Sizing of Duct Work Page Supply air duct sizing Example Air Filter Mounted External to Furnace ExamplesA typical filter rack and dimensions for the OH6 furnace Limit Position and Location Maximum Filter Type Air Velocity Model Number Ft/minOH6 OH8 Burner Installation Do not remove this retainer when installing burnerBurner Specifications and Applications Do not Change Position of the ChamberBeckett Riello BTU/HRMounting the 2-STAGE Riello Burner BTU/HR Heating CapacityOIL Tank and Piping OIL Filter Electrical WiriingElectronic Air Cleaner EAC and Humidifier Installation Thermostat Anticipator Setting Fan Control ModulePreferred method of adjustment Heat Anticipator Adjustment ScaleBlower Motor Speed Selection Heating Speed Set-ups OH6FA072DV41A ECM blower motor speed chart OH8FA119DV5Heating Speed Set-ups 2 Stage OH6FX072DV4Cooling blower motor speed chart 3A Cooling blower motor speed chart Cooling Speed Set-upsOH6FA072D48 HighOH8FA119D60 12.5/1270 11.7/1200 11.2/1150 10.7/1110 10.2/1060 1020 969Terminal Definitions & Field Wiring Blower Controller Information for PSC MotorInputs OutputsOperating Modes On and OFF Blower Delay Time Switch Settings PSC Trouble Shooting Diagnostic FeaturesStartup Procedures STOP! Read the safety information aboveOperating Instructions Adjustment of Burner Combustion To Turn Off Oil to ApplianceCombustion Head Setting for 2-STAGE Riello Burner Preliminary Adjustment of Burner Air Band and Air ShutterAIR Damper Adjustment Turn to the Right Sign +Turn to the Left Sign 1st Stage Adjustment 2nd Stage AdjustmentAdjustment Of Heat Input Rate Page Checkout Procedure III. Users Information Section Inspection AreasFilter Cleaning and Location Starting the BurnerIV. Installers Instructions to User General Inspection Dealer MaintenanceSafety During Servicing and Inspection Heat ExchangerHeat Exchanger Cleaning Instructions OH6 8FT OH8 8FT SUPPLY/RETURN AIR Blower Filter maintenance procedureElectrical System SUPPLY/RETURN AIR FilterFilter replacement Extended Appliance ShutdownOn Shutdown VI. HOMEOWNER/USER Information and Routine Maintenance On StartupPage Location of oil primary control reset button Beckett Burner Riello BurnerCAD Cell Checkout Procedure DiagnosticsDiagnostic Features Number of flashes Cad Cell Resistance in ohms Model R7184BPage VIII. Sequence of Operations Flow Chart Page IX. Trouble Shooting Flow Chart Page Page Page Page Customer Appendix a Replacement Parts Replacement Parts for OH8FA119D Appendix B Wiring Diagrams OH6FA072DV4 ECM Wiring Diagram OH6FX072DV4 ECM 2-Stage Wiring Diagram OH8FA1119D60 PSC Wiring Diagram OH8FA1119DV5 ECM Wiring Diagram

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OH8FA119D60B, OH8FA119DV5B, OH6FX072DV4R, OH6FA072DV4N, OH6FA072D48N specifications

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