Maytag MDG-75 installation manual Troubleshooting, Microprocessor Controller Computer Models

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SECTION X

TROUBLESHOOTING

WARNING: YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) 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 suspect 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 BY A QUALIFIED PROFESSIONAL or SERVICE AGENCY.

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

MICROPROCESSOR CONTROLLER (COMPUTER) MODELS

A.No light emitting diode (L.E.D.) display (for microprocessor controller [computer] models ONLY)...

1.Service panel fuse blown or tripped breaker.

2.Blown control circuit L1 or L2 1/2-amp (Slo Blo) fuse.

3.Failed microprocessor controller (computer).

4.Failed control step down transformer (for 380 volts or higher models ONLY).

B.Drive motor is not operating (does not start)...

1.Microprocessor controller (computer) motor indicator dot and relay output L.E.D. indicator dots are on...

a. Failed drive motor contactor (relay).

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Contents MDG-75 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Routine Maintenance Section Important InformationSafety Precautions What to do if YOU Smell GASPage SPECIFICATIONS/COMPONENT Identification SpecificationsSpecifications Component Identification Page Installation Procedures Location RequirementsUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements Horizontal VentingSingle Dryer Venting Page Page Page Electrical Information Electrical RequirementsMDG-75 Gas Page Single-Phase 1Ø Electrical Connections Leads Page Page GAS Information Type of GAS Page Page Preparation for OPERATION/START-UP Preoperational Tests Basket Coating Preoperational Instructions Shut Down Instructions SERVICE/PARTS Information ServiceParts Warranty Information Returning Warranty CardsRoutine Maintenance CleaningAdjustments LubricationProcedure for Functional Check Replacement Components Page Page Reversing Timer SPIN/DWELL Adjustments Timing LegendData Label Information Data LabelSerial Number Troubleshooting Microprocessor Controller Computer ModelsBlower and fan motors are not operating does not start Failed microprocessor controller computer Failed keyboard touch pad label assembly Microprocessor controller computer L.E.D. display reads Sefl Dryer operates but is taking too long to dry GAS Models AA. Condensation on main door glass Timer Models Blower/fan motors are not operating does not start GAS Models Dryer operates but is taking too long to dry Condensation on main door glass Page Manual Reset HI-LIMIT Instructions P O RTA N T