ADC 450428 service manual Phase 6 OPL System Diagnostics

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SECTION VII

PHASE 6 OPL SYSTEM DIAGNOSTICS

IMPORTANT: YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY or THE STEAM SUPPLY BEFORE ANY 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.

ALL major circuits, including door, microprocessor temperature sensor, heat and motor circuits are monitored. The Phase 6 OPL microprocessor controller (computer) will inform the user, via the L.E.D. (light emitting diode) display of certain failure codes, along with indicators both in L.E.D. display and at the output of each relay (and door switch circuit) to easily identify failures.

A. DIAGNOSTIC (L.E.D. [light emitting diode] DISPLAY) FAILURE CODES

1.SAIL SWITCH FAIL- This routine will prevent start up on the machine unless the sail switch is in the correct position. If the sail switch is closed prior to start up the display will read “SAIL SWITCH FAIL” along with an audio indication.

2.No AIRFLOW- If the sail switch opens during cycle operation the display will read “No AIRFLOW” along with an audio indication. The machine will continue to run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “No AIRFLOW” with an audio indication.

3.bURNER SAFETY FAIL- Routine monitors the temperature above the burner. If the burner hi-limit switch opens the display will read “bURNER SAFETY FAIL.” The machine will run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “bURNER SAFETY FAIL” with an audio indication.

4.dRUM SAFETY FAIL- This routine monitors the tumbler (basket) temperature if the tumbler (basket) hi-limit switch opens prior or during the cycle while the heat was on the machine will display “dRUM SAFETY FAIL.” The machine will continue to run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “dRUM SAFETY FAIL” with an audio indication.

5.No HEAT- This routine monitors the burner ignition. If the burner mis-ignites (does not light) the HSI (Hot Surface Ignition) module will check to see of the microprocessor program has any retries left. The standard retry count is two (2). If the module notices that there are retries left it will purge for one (1) minute then try to ignite the burner again. The HSI module will try this for a total of three (3) times or until there are no retries left. If the burner does not ignite after three (3) attempts the L.E.D. (light emitting diode) display will display the error code “no heat” with an audio indication. When this occurs the machine will run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C).

IMPORTANT: For other countries, such as Australia, the retry count may not apply due to local approvals.

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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 Cleaning Routine MaintenanceMATERIALS, GASOLINE, and Their Flammable Vapors Lubrication AdjustmentsENCLOSURE, AIR SUPPLY, and Exhaust Requirements Installation RequirementsElectrical and GAS Requirements Operational Service Check Procedure Page HSI HOT Surface Ignition Module Gas Models Only Description of PartsControl BOX Drive MotorIdler Assembly GAS Burner AssemblyBlower Motor and Impellor Tumbler Basket Bearing and Pulley Arrangement Main Door SwitchTumbler Basket Manual Reset Thermostat Sail Switch Gas and Electric Models OnlyHI-LIMIT Gas and Electric Models Only Lint Drawer Lint Drawer SwitchSteam Damper System To Replace Computer Control Panel ServicingIntroduction Computer ControlsTo Replace Microprocessor Temperature Sensor Probe To Replace Keyboard Touchpad Label AssemblyTo 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 HSI Hot Surface Ignition Module To Replace Burner TubesThermostats 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 PanelTo Replace Tumbler Basket Pulley PulleysTo 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 BeltsTo Replace Drive Motor MotorsTo Replace Impellor Motor Fan Shaft Drive To Replace Lint Drawer Switch Lint Drawer Assembly To Replace Lint ScreenImpellor No display on computer TroubleshootingComputer will not accept keyboard touchpad entries Dryer operates but is taking too long to dry Dryer will not start, but computer display indicators are onThermal overload for drive motor is tripping Burner hi-limit safety thermostat 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 AIR AIR JET Output L.E.D. Indicator Optional FAN Blower Output L.E.D. IndicatorHT1 Heat Output L.E.D. Indicator Lint Lint Door Input L.E.D. Indicator Fuse Main Fuse 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/ELECTRIC only BURNER/OVEN Open HI-LIMIT Circuit GAS Models only Power 24 VAC is not Evident AT GAS ValveGAS 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
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