Troubleshooting | ADC ML-82 specification

SECTION VII

TROUBLESHOOTING

WARNING: 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...not necessarily the suspected component itself. Electrical parts should always be checked for failure before being returned to the factory.

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 BYA QUALIFIED PROFESSIONAL or SERVICE AGENCY.

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

A.No L.E.D. (light emitting diode) display on microprocessor controller (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 keypad (touchpad) entries...

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

2.Faulty keypad (touchpad).

3.Faulty microprocessor controller (computer).

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ADC ML-82 service manual Troubleshooting, Computer will not accept keypad touchpad entries

Contents

ML-82 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section SERVICE/PARTS Information Important Information Safety Precautions Standards Specifications SPECIFICATIONS/COMPONENT Identification Specifications MLG-82 Gas MLS-82 Steam Component Identification Page Cleaning Routine Maintenance Lubrication Adjustments Description of Parts Control Panel AssemblyDoor Switch Assembly Lint Drawer Lint Drawer Switch Tumbler Bearing Assembly Basket and Support AssemblyTemperature Sensor Bracket Assembly Blower Motor Idler ARM AssemblyDRIVE/FAN Mount Assembly Front Panel Assembly HSI HOT Surface Ignition Burner BOX AssemblySail Switch Assembly Reversing Relay Panel Introduction Servicing To Replace Computer Board To Replace Keyboard Label AssemblyTo Replace Microprocessor Temperature Sensor Probe Computer Controls HSI Ignitor Flame Sensor Probe Ignition ControlsTo Remove Hot Surface Ignitor To Remove Flame Sensor Probe To Replace Main Burner Orifices To Test and Adjust Gas Water Column PressureTo Replace Gas Valve Refer to burner illustration on To Convert Natural Gas to L.P. Gas To Replace Burner HI-LIMIT Thermostat GAS Models only To Replace Burner TubesTo Replace HSI Module Sail Switch Assembly GAS Models only To Adjust Sail Switch To Replace Sail Switch To Install New Main Door Glass To Replace Main Door Assembly To Replace Main Door Hinge Block To Replace Front Panel To Replace Steam Coil Damper System Steam Controls Installation To Replace Steam Coil To Replace PistonTo Replace The Needle Valve To Replace the 3-Way Micro Valve To Replace The Rear Tumbler Bearing Tumbler and Bearing AssemblyTo Replace Tumbler Pulley Reversing To Replace Idler Bearing Idler Shaft and Bearing AssemblyTo Replace The Front Tumbler Bearing To Replace Idler Pulley Tumbler Alignment Vertical Drive PulleyTumbler Basket To Replace The Tumbler And/Or Tumbler Support Tumbler Alignment Lateral Belts Refer to Illustrations in Sections I and K Belt Tension Adjustment-Tumbler To Idler To Replace V-Belts Belt Tension Alignment Motor To Idler Diagnostic L.E.D. Display Failure Codes Phase 6 OPL System DiagnosticsPage E.D. Display Indicator Number E.D. Light Emitting Diode Display IndicatorsPage Fuse Main Fuse Input L.E.D. Indicator FAN Blower Output L.E.D. light emitting diode IndicatorAIR AIR JET Output L.E.D. Indicator Optional HT1 Heat Output L.E.D. Indicator Sail Sail Switch Input L.E.D. Indicator Lint Lint Door Input L.E.D. light emitting diode IndicatorMain Main Door Input L.E.D. Indicator Drum Tumbler HI-LIMIT Input L.E.D. Indicator Power Supply Input L.E.D. Indicator E.D. Codes GAS only Ignition Attempt Failure Fault CodesGAS Models only Power 24 VAC is not Evident AT GAS Valve GAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT Circuit Computer will not accept keypad touchpad entries Troubleshooting Thermal overload for drive motor is tripping Drive motor runs, burner is on, but basket will not turnDryer operates but is taking too long to dry Overload for impellor fan motor is tripping Burner hi-limit safety thermostat is tripping There is excessive vibration coming from the basket Electrical Troubleshooting Drive motor reverses but does not forward, blower motor runs No Display Condition Lint Door Condition Blower motor does not operate, drive motor runs Temp Sensor Fail Check Main Door Condition For example Technical InformationMotor Plate High and LOW Voltage Contact American Dryer Corporation Data Label American Gas Association, Canadian Gas Association Data Label Model Dryer Manual Reset HI-LIMIT Instructions Computer Logic Parts SERVICE/PARTS InformationService Returning Warranty Parts Warranty InformationReturning Warranty Cards Page ML-82 Tool List ADC 450404 1- 12/21/99-50