American Dryer Corp ML-145, ML-170 service manual Fuse Main Fuse Input L.E.D. Indicator

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6.“FUSE” (MAIN FUSE) Input L.E.D. Indicator

a.Should be on ALL the time (even if the dryer is not running). If the L.E.D. (light emitting diode) is not on; then the display will read “CHECK MAIN FUSE.” If the main fuse is good then the fault is on the Phase 6 microprocessor controller (computer).

7.“LINT” (LINT DOOR) Input L.E.D. Indicator

a.Should be on ALL the time (unless the lint door is opened then the “LINT” L.E.D. indicator will go out).

b.If the dryer is active (running) and the lint door is opened the “LINT” L.E.D. indicator will go out and the display will read “LINT dOOR.” The dryer will stop until the Lint Drawer has been closed, at which time the L.E.D. display will read “PRESS START.” At this time, to resume the drying cycle press “ENTER/START” I key.

8.“MAIN” (MAIN DOOR) Input L.E.D. Indicator

a.Should be on ALL the time (unless the lint door is open or the main door is opened then the “MAIN” L.E.D. indicator will go out).

b.If the dryer is active (running) and the main door is opened the “MAIN” L.E.D. indicator will go out and the display will read “MAIN dOOR.” The dryer will stop until the main door has been closed, at which time the L.E.D. display will read “PRESS START.” At this time, to resume the drying cycle press “ENTER/START” I key.

9.“DRUM” (TUMBLER [BASKET] HI-LIMIT) Input L.E.D. Indicator

a.Should be on at ALL times (unless the tumbler [basket] hi-limit switch opens prior during the cycle while the heat was on the display would read “dRUM SAFETY FAIL”). The machine will run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Then the machine will shut down still displaying “dRUM SAFETY FAIL” with an audio indication.

10.“SAIL” (SAIL SWITCH) Input L.E.D. Indicator

a.This routine will prevent start up on the machine unless the sail switch is in the correct position. If the sail switch is in the closed position prior to start, the “SAIL” output L.E.D. indicator will be off, the machine will not start and the display will read “SAIL SWITCH FAIL” along with an audio indication.

b.If the sail switch opens during the cycle the “SAIL” output L.E.D. indicator will go out and the display will read “NO AIRFLOW.” The machine will run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Then the machine will shut down still displaying “NO AIRFLOW” along with an audio indication.

11.“BURN” (BURN HI-LIMIT) Input L.E.D. Indicator

a.This routine monitors the temperature of the burner. If the burner hi-limit opens during the cycle while the heat was on the “BURN” output L.E.D. indicator goes out and the display reads “bURNER SAFETY FAIL.” The machine will run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C) then the machine will shut down still displaying “bURNER SAFETY FAIL” with an audio indication.

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Contents American Dryer Corporation ML-145 / ML-170Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Content Section Technical Information Important Information Safety PrecautionsStandards Cleaning Routine MaintenanceLubrication AdjustmentsInstallation Requirements ENCLOSURE, AIR SUPPLY, and Exhaust RequirementsElectrical and GAS Requirements Operational Service Check Procedure Gas 10.5 inches water column 26.1 mb Control BOX Description of PartsControl Panel Microprocessor Control Panel NON-MICROPROCESSORDrive Motor GAS Burner AssemblyHSI HOT Surface Ignition Module Gas Models onlyIdler 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 Compressed AIR Requirements Lint Drawer SwitchTemperature Sensor Bracket NON-COMPUTER Steam Damper SystemTo Replace Computer ServicingIntroduction Computer ControlsTo Replace Microprocessor Temperature Sensor Probe To Replace Keyboard Touchpad Label AssemblyTo Remove Flame Probe Assembly Ignition ControlsTo Replace Gas Valve Refer to above burner illustration To Replace Main Burner Orifices To Test and Adjust Gas Water Column PressureTo Replace Burner Tubes To Convert from Natural Gas to L.P. GasTo Replace HSI Hot Surface Ignition Module ThermostatsTo Replace Burner Hi-Limit Thermostat Gas Models Only To Replace Sail Switch Sail Switch Assembly Gas Models onlyTo Replace Main Door Assembly To Adjust Sail SwitchTo Replace Front Panel To Install New Main Door GlassTo Replace Main Door Hinge Blocks PulleysTo Replace Tumbler Basket Pulley To Replace Large Idler Pulley To Replace Small Idler PulleyTumbler Basket Assembly Tumbler Basket Alignment Vertical Up and Down AdjustmentTo Replace Motor Pulley To Replace Tumbler Basket or Tumbler Basket Support Tumbler Basket Alignment Lateral Side to Side AdjustmentImportant Never strike the shaft directly with a hammer To Replace Front Idler Shaft Pillow Block Bearing To Replace Front Tumbler Basket Support Pillow Block BearingBelt Tension Adjustment Tumbler Basket to Idler To Replace Rear Idler Shaft Pillow Block BearingBelts Refer to illustrations in section F Pulleys To Replace Drive Motor Belt Tension Adjustment Motor to IdlerTo Replace V-Belts MotorsImpellor To Replace Lint Drawer Switch Lint Drawer Assembly To Replace Lint ScreenComputer will not accept keyboard touchpad entries TroubleshootingDisplay is reading no Airflow Display is reading Rotation Sensor FailDisplay is reading No Heat Display is reading Sail Switch FailDisplay is reading Drum Safety Fail Display is reading Burner Safety FailDisplay is reading Lint Door Display is reading Burner Control FailureDisplay is reading Burner Flame Failure Display is reading Main DoorDisplay is reading Hot Dryer operates but is taking too long to dryThermal overload for drive motor is tripping There is excessive vibration coming from the tumbler basket Overload for impellor fan motor is trippingElectrical Troubleshooting 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. light emitting diode Indicator AIR AIR JET Output L.E.D. Indicator OptionalHT1 Heat Output L.E.D. Indicator Drum Tumbler Basket HI-LIMIT Input L.E.D. Indicator Fuse Main Fuse Input L.E.D. IndicatorLint Lint Door Input L.E.D. Indicator Main Main Door Input L.E.D. IndicatorPower Supply Input L.E.D. Indicator Flame bURNER Control Fail Input L.E.D. IndicatorE.D. Display Operating Status D. DISPLAY/CODESPhase 6 OPL Microprocessor L.E.D. Displays ALL 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 No Display Condition Blower motor does not operate, drive motor runs No Heat Drive and Blower Motors Run Steam Models No Heat Drive and Blower Motors Run Gas ModelsDoor Condition Motor Plate High and LOW Voltage Technical InformationInformation on the Data Label Data LabelHow to Use a Manometer Using a ManometerML-170 Tool List ADC 450429 1- 02/18/00-25
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