ADC 450428 service manual Troubleshooting, No display on computer

Page 39

SECTION VI

TROUBLESHOOTING

IMPORTANT: YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY or THE STEAM SUPPLY BEFOREANY COVERS or

GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING,ADJUSTING, INSTALLATION, or TESTING OFANY EQUIPMENT per OSHA(Occupational Safety and HealthAdministration)

STANDARDS.

The information provided will help isolate the most probable component(s) associated with the difficulty described. The experienced technician realizes, however, that a loose connection or broken/shorted wire may be at fault where electrical components are concerned...and not necessarily the suspected component itself.

IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the fuse being replaced. The information provided should not be misconstrued as a handbook for use by an untrained person in making repairs.

WARNING: ALL SERVICE and TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED PROFESSIONALor SERVICE AGENCY.

WARNING: WHILE MAKING REPAIRS, OBSERVEALLSAFETY PRECAUTIONS DISPLAYED ON THE DRYER or SPECIFIED IN THIS MANUAL.

A.No display on computer...

1.Open circuit breaker switch or blown fuse.

2.Tripped blower motor overload.

3.Faulty wiring connection.

4.Faulty transformer.

5.“EMERGENCY STOP” (E-Stop) button is depressed.

6.Faulty microprocessor controller (computer).

B.Computer will not accept keyboard (touchpad) entries...

1.Keyboard (touchpad) ribbon is not plugged into computer securely.

2.Faulty keyboard (touchpad).

3.Faulty microprocessor controller (computer).

35

Image 39

Contents American Dryer Corporation ML-130Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Content Phase 6 OPL System Diagnostics Important Information Safety PrecautionsStandards Routine Maintenance CleaningMATERIALS, GASOLINE, and Their Flammable Vapors Lubrication AdjustmentsInstallation Requirements ENCLOSURE, AIR SUPPLY, and Exhaust RequirementsElectrical and GAS Requirements Operational Service Check Procedure Page HSI HOT Surface Ignition Module Gas Models Only Description of PartsControl BOX Drive MotorGAS Burner Assembly Idler AssemblyBlower Motor and Impellor Main Door Switch Tumbler Basket Bearing and Pulley ArrangementTumbler Basket Sail Switch Gas and Electric Models Only Manual Reset ThermostatHI-LIMIT Gas and Electric Models Only Lint Drawer Switch Lint DrawerSteam Damper System To Replace Computer Control Panel ServicingIntroduction Computer ControlsTo Replace Keyboard Touchpad Label Assembly To Replace Microprocessor Temperature Sensor ProbeTo Replace Computer To Remove Hot Surface Ignitor refer to illustration above Ignition ControlsHSI Ignitor Flame Sensor Probe To Remove Flame Sensor ProbeTo Replace Main Burner Orifices To Test and Adjust Gas Water Column PressureTo Convert from Natural Gas to L.P. Gas To Replace Burner Tubes To Replace HSI Hot Surface Ignition ModuleThermostats Page Personal Injury or Fire could Result Sail Switch Assembly Gas and Electric Models OnlyTo Replace Sail Switch To Adjust Sail SwitchTo Install New Main Door Glass To Replace Main Door AssemblyTo Replace Main Door Hinge Block To Replace Front PanelPulleys To Replace Tumbler Basket PulleyTo Replace Small Idler Pulley To Replace Motor Pulley To Replace Large Idler PulleyTumbler Basket Alignment Vertical Up and Down Adjustment Tumbler Basket AssemblyTo Replace Tumbler Basket or Tumbler Basket Support Tumbler Basket Alignment Lateral Side to Side AdjustmentTo Replace Front Tumbler Basket Support Pillow Block Bearing To Replace Rear Idler Shaft Pillow Block Bearing To Replace Front Idler Shaft Pillow Block BearingTo Replace V-Belts Belt Tension Adjustment Tumbler Basket to IdlerBelt Tension Adjustment Motor to Idler BeltsMotors To Replace Drive MotorTo Replace Impellor Motor Fan Shaft Drive Lint Drawer Assembly To Replace Lint Screen To Replace Lint Drawer SwitchImpellor Troubleshooting No display on computerComputer will not accept keyboard touchpad entries Dryer operates but is taking too long to dry Dryer will not start, but computer display indicators are onBurner hi-limit safety thermostat is tripping Thermal overload for drive motor is trippingOverload for impellor fan motor is tripping There is excessive vibration coming from the tumbler basket Diagnostic L.E.D. light emitting diode Display Failure Codes Phase 6 OPL System DiagnosticsPage E.D. Display Indicator Number E.D. light emitting diode Display IndicatorsE.D. Display Indicator Number FAN Blower Output L.E.D. Indicator AIR AIR JET Output L.E.D. Indicator OptionalHT1 Heat Output L.E.D. Indicator Fuse Main Fuse Input L.E.D. Indicator Lint Lint Door Input L.E.D. IndicatorMain Main Door Input L.E.D. Indicator Power Supply Input L.E.D. Indicator Flame bURNER Control Fail Input L.E.D. IndicatorALL REV E.D. Codes 1. Display CodesGAS Models only Power 24 VAC is not Evident AT GAS Valve GAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT CircuitGAS only Ignition Attempt Failure Computer Logic and Wiring Diagram Page Drive motor reverses but does not forward, blower motor runs No Display ConditionLint Door Condition Blower motor does not operate, drive motor runsMicroprocessor Computer Main Door ConditionFor Phase 6 Models Manual Reset HI-LIMIT InstructionsMotor Plate High and LOW Voltage Technical InformationInformation on the Data Label Data LabelHOW to USE a Manometer Tool List ADC450428 1- 02/22/00-25