American Dryer Corp MD-170 manual GAS Models

Page 51

Q.Dryer stops during a cycle, microprocessor controller (computer) buzzer (tone) sounds for 5-seconds, and then the L.E.D. (light emitting diode) display returns to FILL"...

1.Loose connection somewhere in the main power circuit to the microprocessor controller (computer).

2.Failed arc suppressor (A.S.) board.

R.Microprocessor controller (computer) L.E.D. (light emitting diode) display reads "SEFL"...

1.Rotational sensor circuit (option) failure...fault somewhere in tumbler (basket) rotation or circuit ...

a.Tumbler(basket) is not rotating ...

1)Broken or loose V-belts.

2)Failure in drive motor circuit...refer to Item B, Item C, and/or Item D on page 43 and page 44 in this section.

b.Failed rotational sensor.

c.Broken wire or connection between sensor and microprocessor controller (computer).

2.Microprocessor controller (computer) program (PL02) is set incorrectly in the active mode ("SEn") where the dryer is not equipped with the optional rotational sensor...program should be set as "nSEn."

S.Microprocessor controller (computer) L.E.D. (light emitting diode) display reads "Hot"...

1.Possible overheating condition...microprocessor controller (computer) has sensed a temperature which has exceeded 220º F (105º C).

"Hot" display will not clear until temperature sensed has dropped to 220º F (105º C) or lower and the micro- processor controller (computer) is manually reset by pressing the "CLEAR/STOP" key.

T.Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model, DSI module, or Steam Model damper system pneumatic solenoid) when dryer is first started and both the heat indicator dot and the "HEAT" output L.E.D. are on...

GAS MODELS

1.Fault in sail switch circuit ...

a.Sail switch out of adjustment and/or has failed.

b.Sail switch damper is not closing or is fluttering ...

1)Lint drawer/screen is dirty.

2)Restriction in exhaust.

3)No exhaust air flow.

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Contents Maytag Co MD-170 Installation/Operators ManualRetain 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 SectionWhat to do if YOU Smell GAS Safety PrecautionsGAS Supply or the Steam Supply Before ANY Covers or Specifications GAS and Steam Specifications / Component IdentificationSpecifications MDG-170 Gas MDS-170 Steam Component Identification Page Location Requirements Installation ProceduresUNPACKING/SETTING UP Round duct can now be connected to the dryer Dryer Enclosure Requirements Fresh AIR Supply Create a Potential Fire Hazard Exhaust RequirementsPage Page Page Page Page Electrical Information MDG-170 Gas MDS-170 Steam Page Page GAS Information Type of GAS Latest Edition Page Steam Requirements High Pressure Steam InformationSteam Damper System 621 kPa DiagramPage Preparation for OPERATION/START-UP Switch Otherwise the Dryer will not StartPreoperational Tests Natural Gas Inches W.C .5 millibars Basket Coating Shut Down Instructions621 kPa Compressed AIR RequirementsSERVICE/PARTS Information ServiceParts Returning Warranty Cards Warranty InformationRoutine Maintenance CleaningClean the lint drawer or screen every third or fourth load Createa Potentialfire Hazard Lubrication AdjustmentsDrive motor is not operating does not start TroubleshootingFailed blower impellor/fan drive shaft bearings Blower impellor/fan motor is not operating does not startFailed microprocessor controller computer Failed keyboard touchpad label assembly GAS Models Steam Models Dryer operates but is taking too long to dry Gas Models Condensation on main door glass AA. Excessive noise and/or vibration Dryer or scraping noise at tumbler basket areaFailed drive motor contactor relay Failed motor Failed blower impellor/fan drive shaft bearings Steam Models Gas Models Steam Models Condensation on main door glass Excessive noise and/or vibration Timing Legend Reversing Timer SPIN/DWELLADJUSTMENTSData Label Location / Information GAS Manifold Pressure for GAS Dryers Data LabelMicroprocessor computer Board Procedure for Functional Check Replacement ComponentsModels manufactured with ADC module Part No Theory Of Operation P O R T a N T ADC P/N114501 02/16/00-25 2- 02/25/00-250