American Dryer Corp MDG-30 Troubleshooting, No light emitting diode L.E.D. display

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SECTIONVII

TROUBLESHOOTING

IMPORTANT: 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 OFANY EQUIPMENT PER OSHA(Occupational Safety and HealthAdministration)

STANDARDS.

The information provided will help isolate the most probable components 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 and not necessarily the suspected component itself.

Electrical parts should always be checked for failure before being returned to the factory.

The information provided should not be misconstrued as a handbook for use by an untrained person making repairs.

IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the fuse being replaced.

WARNING: ALL SERVICE AND TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED PROFESSIONALOR SERVICEAGENCY.

WARNING: WHILE MAKING REPAIRS, OBSERVE ALLSAFETY PRECAUTIONS DISPLAYED ON THE DRYER OR SPECIFIED IN THIS MANUAL.

MICROPROCESSOR CONTROLLER (COMPUTER) MODELS

A.No light emitting diode (L.E.D.) display...

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

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

1.Failed drive motor contactor (relay).

2.Failed drive motor.

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Contents MDG-30 Coin Installation Manual Retain This Manual In a Safe Place For Future Reference Foryour Safety Page Table of Contents Section Procedure for Functional Check of Replacement Important Information Receiving and HandlingSafety Precautions What to do if YOU Smell GASPage Specifications SpecificationsSpecifications GAS only Installation Procedures Unpacking and Setting UPLocation Requirements Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements Single Dryer Venting Vertical Venting Multiple Dryer Common Venting Illus. D Importantventingreminders Electrical Information Electrical RequirementsMust be Provided Single-Phase 1ø Electrical Connections Leads GAS 120GAS Information Rating Kcal/hr22,680 This Pipe Size Requirement Page Preparation for Operation and START-UP Preoperational Tests Preoperational Instructions Basket Tumbler CoatingPage Select Temperature Shutdown Instructions Service SERVICE/PARTS InformationParts Returning Warranty Cards Warranty Information Warranty Cleaning Routine MaintenanceSuggested Cleaning Schedule Adjustments LubricationNo light emitting diode L.E.D. display TroubleshootingDrive motor is not operating does not start Blower motor is not operating does not start Microprocessor controller computer display reads dSFLMicroprocessor controller computer display reads door No heat, ignitor sparks, burner goes on and off right awayDryer operates but is taking too long to dry Dryer is making scraping noise at basket tumbler area Condensation on main door glassExcessive noise or vibration Main burners are burning with a yellow flame Heating unit is not operating all temperature selectionsDryer operates but is taking too long to dry load Dryer is cycling on hi-limit thermostat Datalabel Information Data LabelSerial Number Procedure for Functional Check Replacement Components Page Page Burner Manual Reset HI-LIMIT Instructions 12/15/99-150