American Dryer Corp ML-170, ML-145 service manual E.D. light emitting diode Display Indicators

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11.ROTATE SENSOR FAIL - Indicates a rotational sensor circuit failure meaning that there is a fault somewhere in the tumbler (basket) rotating circuit, or the Phase 6 OPL microprocessor controller (computer) program related to this circuit (Program Location 2) is set incorrectly. In the active mode it should be (ROTATE SENSOR ACTIVE), if the dryer is not equipped with the optional rotational sensor it should be set in the nonactive mode (No ROTATE SENSOR).

NOTE: RPM - This routine monitors the timing response from the existing rotational sensor input and derives a RPM measurement. To display this RPM measurement (press the “ENTER/ START” I key once and release, then press the “ENTER/START” I key a second time and hold. This will display the RPM measurement). The rotational sensor must be active for operation of this feature.

12.CHECK MAIN FUSE - Indicates that the circuit fuse protection which is located on the back side of the Phase 6 microprocessor controller (computer) the display would read “CHECK MAIN FUSE.” If the display continues after the fuse has been replaced then it is the fault of the Phase 6 microprocessor controller (computer).

B.L.E.D. (light emitting diode) DISPLAY INDICATORS

The L.E.D. (light emitting diode) indicator dots located on the top portion of the display indicates the various Phase 6 OPL computer output functions while a cycle is in progress. These indicator dots (as shown in the illustration below) DO NOT necessarily mean that the outputs are functioning. They are only indicating that the function output should be active (on).

1.L.E.D. DISPLAY INDICATOR NUMBER 1

a.For Optional Reversing Models:

1)This indicator dot is on when the drive (tumbler [basket]) motor is operating in the forward mode (clockwise [CW] direction).

2.L.E.D. DISPLAY INDICATOR NUMBER 2

a.For Optional Reversing Models:

1)This indicator dot is on when the drive (tumbler [basket]) motor is operating in the reverse mode (counterclockwise [CCW] direction).

3.L.E.D. DISPLAY INDICATOR NUMBER 3

a.Heat Circuit Indicator:

1)This indicator dot is on whenever the Phase 6 OPL microprocessor controller (computer) is calling for the heating circuit to be active (on).

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Contents ML-145 / ML-170 American Dryer CorporationRetain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Content Section Technical Information Safety Precautions Important InformationStandards Routine Maintenance CleaningAdjustments LubricationInstallation Requirements ENCLOSURE, AIR SUPPLY, and Exhaust RequirementsElectrical and GAS Requirements Operational Service Check Procedure Gas 10.5 inches water column 26.1 mb Description of Parts Control Panel MicroprocessorControl Panel NON-MICROPROCESSOR Control BOXGAS Burner Assembly HSI HOT Surface Ignition ModuleGas Models only Drive MotorIdler Assembly Blower Motor and Impellor GAS and SteamTumbler Basket Bearing and Pulley Arrangement Main Door Switch Sail Switch Gas Models onlyTumbler Basket Automatic Reset Thermostat HI-LIMIT Gas Models onlyLint Drawer Lint Drawer Switch Temperature Sensor Bracket NON-COMPUTERSteam Damper System Compressed AIR RequirementsServicing IntroductionComputer Controls To Replace ComputerTo Replace Keyboard Touchpad Label Assembly To Replace Microprocessor Temperature Sensor ProbeTo Remove Flame Probe Assembly Ignition ControlsTo Replace Gas Valve Refer to above burner illustration To Test and Adjust Gas Water Column Pressure To Replace Main Burner OrificesTo Convert from Natural Gas to L.P. Gas To Replace Burner TubesTo Replace HSI Hot Surface Ignition Module ThermostatsTo Replace Burner Hi-Limit Thermostat Gas Models Only Sail Switch Assembly Gas Models only To Replace Sail SwitchTo Adjust Sail Switch To Replace Main Door AssemblyTo Install New Main Door Glass To Replace Front PanelTo Replace Main Door Hinge Blocks PulleysTo Replace Tumbler Basket Pulley To Replace Small Idler Pulley To Replace Large Idler PulleyTumbler Basket Assembly Tumbler Basket Alignment Vertical Up and Down AdjustmentTo Replace Motor Pulley Tumbler Basket Alignment Lateral Side to Side Adjustment To Replace Tumbler Basket or Tumbler Basket SupportImportant Never strike the shaft directly with a hammer To Replace Front Tumbler Basket Support Pillow Block Bearing To Replace Front Idler Shaft Pillow Block BearingBelt Tension Adjustment Tumbler Basket to Idler To Replace Rear Idler Shaft Pillow Block BearingBelts Refer to illustrations in section F Pulleys Belt Tension Adjustment Motor to Idler To Replace V-BeltsMotors To Replace Drive MotorImpellor Lint Drawer Assembly To Replace Lint Screen To Replace Lint Drawer SwitchTroubleshooting Computer will not accept keyboard touchpad entriesDisplay is reading Rotation Sensor Fail Display is reading no AirflowDisplay is reading Sail Switch Fail Display is reading Drum Safety FailDisplay is reading Burner Safety Fail Display is reading No HeatDisplay is reading Burner Control Failure Display is reading Burner Flame FailureDisplay is reading Main Door Display is reading Lint DoorDisplay is reading Hot Dryer operates but is taking too long to dryThermal overload for drive motor is tripping Overload for impellor fan motor is tripping There is excessive vibration coming from the tumbler basketElectrical Troubleshooting Phase 6 OPL System Diagnostics Diagnostic L.E.D. light emitting diode Display Failure CodesPage E.D. light emitting diode Display Indicators E.D. Display Indicator NumberE.D. Display Indicator Number FAN Blower Output L.E.D. light emitting diode 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 Drum Tumbler Basket HI-LIMIT Input L.E.D. IndicatorFlame bURNER Control Fail Input L.E.D. Indicator Power Supply Input L.E.D. IndicatorD. DISPLAY/CODES E.D. Display Operating StatusPhase 6 OPL Microprocessor L.E.D. Displays E.D. Codes 1. Display Codes ALL REVGAS 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 No Display Condition Blower motor does not operate, drive motor runs No Heat Drive and Blower Motors Run Gas Models No Heat Drive and Blower Motors Run Steam ModelsDoor Condition Technical Information Motor Plate High and LOW VoltageData Label Information on the Data LabelUsing a Manometer How to Use a ManometerML-170 Tool List ADC 450429 1- 02/18/00-25