ADC ML-96 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 BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOWACCESS 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. (light emitting diode) 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 (Hot Surface Ignition) 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. 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 ML-96 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Safety Precautions Important InformationPage Cleaning Routine MaintenanceMATERIALS, Gasoline and Other Flammable Vapors Adjustments LubricationENCLOSURE, AIR SUPPLY, and Exhaust Requirements Installation RequirementsElectrical and GAS Requirements Operational Service Check Procedure Page Description of Parts Reversing Relay PanelHSI HOT Surface Ignition Module Gas Models Only GAS Burner AssemblyDrive Motor Idler Shaft Assembly Drive Shaft AssemblyTumbler Basket Sail Switch Gas Models Only Main Door SwitchBurner HI-LIMIT Gas Models Only Lint Drawer Switch Manual Reset ThermostatLint Screen Servicing Computer Board ReplacementIntroduction Keyboard Touchpad Label Assembly Replacement Microprocessor Temperature Sensor Probe ReplacementIgnition Controls Flame Sensor Probe ReplacementHot Surface Ignitor Flame Sensor Probe Gas Valve Replacement Refer to burner illustration on Main Burner Orifices ReplacementTo Test and Adjust Gas Water Column Pressure To Convert Natural Gas to L.P. GasBurner Tubes Replacement HSI Hot Surface Ignition Module ReplacementDisconnect electrical power to the dryer Open lint door Sail Switch Replacement Sail Switch Assembly Gas Models OnlyTo Adjust Sail Switch Main Door Assembly Replacement To Install New Main Door GlassFront Panel Replacement Main Door Hinge Block ReplacementDrive Shaft Pulley Replacement Drive Motor Pulley ReplacementPage Basket Assembly 15/16 Flange Bearing ReplacementRotational Sensor Assembly Drive Shaft Pillow Block Bearing Replacement Idler Shaft Pillow Block Bearing ReplacementBelt Adjustment Motor to Drive Axle Drive Motor Replacement Drive Motor V-Belts ReplacementMotors Motorized Impellor Blower Replacement Lint Door Switch ReplacementTroubleshooting Computer will not accept keypad touchpad entriesDryer operates but is taking too long to dry Thermal 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 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 HT1 Heat Output L.E.D. light emitting diode IndicatorLint Lint Door Input L.E.D. light emitting diode Indicator Fuse Main Fuse Input L.E.D. light emitting diode IndicatorMain Main Door Input L.E.D. light emitting diode Indicator Power Supply Input L.E.D. light emitting diode Indicator E.D. Codes 1. Display Codes GAS/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 No Display Condition Drive motor reverses but does not forward, blower motor runsBlower motor does not operate, drive motor runs Lint Door ConditionMain Door Condition Microprocessor ComputerManual Reset HI-LIMIT Instructions For Phase 6 ModelsTechnical Information Motor Plate High and LOW VoltageData Label Information on the Data LabelHOW to USE a Manometer ML-96 Tool List ADC450406 1- 02/09/00-25
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ML-96 specifications

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