American Dryer Corp MLG31PCA Failed keyboard touch pad label assembly Failed DMC computer

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Possible reasons for overheating ...

1.Restriction in location exhaust ductwork ...

a.Dryer exhaust damper stuck in closed position.

b.Undersized exhaust ductwork.

2.Insufficient make-up air.

K.Dual Microprocessor Controller (DMC) computer light emitting diode (L.E.D.) display reads “SEFL”...

The “SEFL” display condition indicates a rotational sensor circuit failure, which means that there is a fault somewhere in the basket (tumbler) rotation detection circuit or the DMC computer program related to this circuit (PL01) is set incorrectly in the active mode (“SEn”) where the dryer is not equipped with the optional rotation sensor and should be set in the non-active mode (“nSEn”).

If the dryer is equipped with the optional rotational sensor and for whatever reason the DMC computer detects that the basket (tumbler) is not turning, it will disable ALL of the dryer outputs (shut the dryer down), and the L.E.D. display will read “SEFL.” The L.E.D. display will continue to read “SEFL” until the DMC computer is manually reset by closing and opening the Program Switch (PS).

Possible causes ...

1.Loose/slipping (out of proper adjustment) basket (tumbler) belt.

2.Broken basket (tumbler) V-belt.

3.Failed motor (refer to Item B on page 37 and page 38 and Item E on page 38).

4.Failure in the rotational sensor circuit ...

a.Failed rotational sensor.

b.Loose connection or break between the rotation sensor and the DMC computer.

L.DMC computer will not accept any, or ONLY accept certain keyboard (touch pad) entries...

1.Failed keyboard (touch pad) label assembly.

2.Failed DMC computer.

M.DMC computer locks up and the L.E.D. display reads erroneous message(s) or ONLY partial segments...

1.Transient power voltage (spikes) ... disconnect power to the dryer, wait 1 minute (NOTE: for dryer models with the optional battery back-up ... disconnect battery), then reestablish power to the dryer. If a problem is still evident, proceed to Item M2, Item M3, and Item M4.

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Contents MLG31PCA Retain This Manual In a Safe Place For Future Reference For Your 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 71-1/2Gas Location of the Dryer Installation ProceduresUNPACKING/SETTING UP Page Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements Page Page Page Page Page Page Electrical Information Electrical RequirementsLG31PCA GAS Information Type of GAS Typical GAS Connections Page Page Preparation for Operation Preoperational TestsPage Basket Tumbler Coating Shut Down Instructions Operating Instructions Starting the DryerPage Page Parts SERVICE/PARTS InformationService Warranty Warranty InformationReturning Warranty Cards Suggested Cleaning Schedule Routine MaintenanceCleaning Adjustments LubricationTroubleshooting SectionviiiFailed motor contactor/relay DMC computer L.E.D. display reads dSFL Failed keyboard touch pad label assembly Failed DMC computer If the dryer is equipped with optional battery back-up Dryer operates, but is taking too long to dry Condensation on main door glass Procedure for Functional Check Replacement Components Page Optional Gas Piping Kit Part No 1 02/11/02-20 05/01/02-250