American Dryer Corp MDG-75 manual Failed microprocessor controller computer

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U. Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model) when dryer is first started and both the heat indicator dot and the "HEAT" output L.E.D. (light emitting diode) is not on...

1.Failed microprocessor controller (computer).

V.Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model - HSI module) GAS MODELS ...

1.Fault in Hot Surface Ignition (HSI) system ...

a.Ignitor glows, but no ignition and HSI module "LOCKS-OUT" ("red" L.E.D. [light emitting diode] indicator flashes) ...

1)Flame probe assembly is out of adjustment or has failed.

2)Severe air turbulence.

3)Failed HSI module.

4)Failed gas valve.

b.Ignitor glows, burner lights but burner goes off right away ...

1)Flame probe assembly is out of adjustment or has failed.

2)Sail switch is fluttering ...

a)Lint screen is dirty.

b)Restriction in exhaust duct work.

c.Hot Surface Ignitor does not glow and HSI module "LOCKS-OUT" ("red" L.E.D. [light emitting diode] indicator flashes) ...

1)Fault in Ignitor wiring...break or loose connection.

2)Failed Ignitor Assembly.

3)Failed HSI module.

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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 Procedure for Functional Check of Replacement Important Information SectionWhat to do if YOU Smell GAS Safety PrecautionsPage Specifications SPECIFICATIONS/COMPONENT IdentificationSpecifications Component Identification Dryer Rear View Illus. No Location Requirements Installation ProceduresUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Supply Exhaust Requirements Not be Reduced Anywhere Down Stream of the Dryer Page Page Electrical Information MDG-75 GAS Page 3+$6 ‘ /&75,&$/&211&7,216/$6 Page Page GAS Information 48, 3523$1 Page Page Preparation for OPERATION/START-UP Gas Dryers Preoperational TestsPage Preoperational Instructions Shut Down Instructions Service SERVICE/PARTS InformationParts Returning Warranty Cards Warranty InformationCleaning Routine MaintenanceDays Days After Installation and Every 6 Months Thereafter AdjustmentsProcedure for Functional Check Replacement Components Page Page 1* /*1’ Reversing Timer Spin and Dwell AdjustmentsData Label Technical InformationApplicable Approval Seals From the Machine Toallowaccess for CLEANING,ADJUSTING Troubleshooting70 3$ Microprocessor Computer Models Blower and Fan motor is not operating does not start Loose connection in main door switch circuit Page GAS Models Failed microprocessor controller computer Dryer operates but is taking too long to dry Page AA. Condensation on main door glass Timer Models Blower/Fan motor is not operating does not start Page Dryer operates but is taking too long to dry Page Condensation on main door glass Page 01/07/998-50