Maytag MLE/MLG23PRA, MDE/MDG21PRA, MDE/MDG21PNA, MDE/MDG21PDA Control, Board Does, Not, Keypads

Page 30

Troubleshooting Procedures

!WARNING

To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing requires power.

Stack Dryer Troubleshooting Guide

Will not

respond to

handheld

PDA

Does PDA

respond to other

machines?

No

Yes

Check optic

window for

obstructions, dirt,

or scratches.

PDA has failed.

If problem still exists replace control board

Control

 

When service door is

 

Board Does

 

 

closed, dryer door

Not

 

 

 

must be closed for

 

 

Respond To

 

corresponding

Keypads

 

keypads to work.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Enter operator mode

 

 

 

 

 

 

 

 

using service switch.

 

 

 

 

Does display contain

 

 

 

 

a diagnostic code?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

See diagnostic code

 

 

 

 

 

 

 

 

troubleshooting guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Does Display

 

 

 

 

 

 

 

 

 

show "Select

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cycle"?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Does control board

 

 

 

 

No

 

 

 

 

respond to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

program keys?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unplug dryers and check

 

 

 

 

 

 

 

wiring and termination

 

 

 

 

 

 

between door switch and

 

 

 

 

 

 

control board. Replace

 

 

 

 

 

 

door switch if necessary

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If problem

 

 

 

 

 

 

 

 

 

persists, initiate

 

 

 

 

 

 

 

 

 

reset sequence.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If problem

 

 

 

 

 

 

 

 

 

persists, replace

 

 

 

 

 

 

 

 

 

control board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cycle price must

No be satisfied before keypads will work.

 

 

 

Unplug dyers and

 

 

 

check problem

No

 

 

 

 

membrane switch

 

 

 

 

 

 

 

 

 

tail connection.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Plug in dryer. If problem

persists replace corresponding membrane switch.

30

16022904 Rev. 0

©2004 Maytag Appliances Company

Image 30
Contents Commercial Single Stack Dryers Important Information Table of Contents Important Safety Information About Ground Wires General Information Related PublicationsProper Grounding and Polarization of 120 Volts Wall Outlets Grounding Instructions ExplanationModel Identification ServiceParts and Accessories Commercial Dryer NomenclatureTERMINOLOGY/DEFINITIONS Term Definitions Water 1 o FAir movement measured in cubic feet per minute GAS Valve Assembly HOW IT WorksFunction of Gas Valve System Radiant Sensor Contact ClosedGas Conversions Safety FeaturesPower Interruptions Ignition FailuresGeneral Information General Specifications Wattage SpecificationsExhaust Ducts Electrical Troubleshooting Drive Motor CheckMotor Test Cord Centrifugal SwitchAir Shutter Adjustment Drive Motor TestHow to Use ManometersWill Not Dry Mechanical Troubleshooting Will Not RunWill Not Shut-Off Noisy and/Or VibrationSingle Dryer Troubleshooting Guide Exit Dryer Stopped with Zero Minutes Remaining DisplayCannot Enter Or OperatorDisplay Flashes User Mode Dropped Into Machine Credited Are Eventually LostControl Does Not Respond ToKey Inputs Dryer Drum Will Not Turn Response To Coin 1 orNo Decimal Will Not Keep Time Of Day During Power InterruptionsWill not Respond to handheld Point Is UsedNot Heat Dryer WillSingle Dryer Diagnostic Program Dryer Diagnostic Program Single Dryer Diagnostic Code Door Sense ProblemVAC Abnormal Display Or Function Upper or Stack Dryer Troubleshooting GuideDisplay Is Blank Lower Dryer Has Zero Minutes Remaining DisplayNot ControlBoard Does KeypadsDuring Response To Coin Or CoinKeep Time Day InterruptionCannot Dryer Runs Without Program Selection Drum Will Not Turn Stack Dryer Diagnostic Program Stack Dryer Diagnostic Code D1 or d17 Door Sense ProblemVoltage Problem Microprocessor Board Touch Pad AssemblyControl Panel TransformerDoor Assembly Service Door SwitchCoin Vault Switch Coin SensorReversing Door Assembly Door DisassemblyFront Panel Door Switch Top CoverFront Shroud Assembly Removal Outlet Duct, Shroud & Tumbler FrontFront Seal Lint FilterBearing & Pads BeltRear Shroud Assembly Installing Drive BeltBaffles Roller and Bearing Assembly Back SealCycling Thermostat Blower AssemblyThermostats Low-cycling ThermostatBlower Exhaust Duct Pipe Assembly Breakdown Motor Switch Drive Motor AssemblyIdler Arm Assembly Gas Valve Assembly CoilsIgniter Inlet Duct Gas ValveCombustion Cone Heater EnclosureService Panel and Switch Access CoverStack Dryer Sloped Front Models Microprocessor Coin DropRemove Screws Swing Out AwayStack Dryer Sloped Front PR Stack DRYER-MN ModelsSelector Switch Push-To-Start SwitchTimer Machine-In-Use LightFront Shroud Assembly Stack DRYER-FLAT Front ModelsMotor & Heater Relays Appendix a Programming Procedures PricingFixed Vend Pricing SET UP Codes Steps 3. thru 9. codes are skipped if mode 2.00 is selected Money Counter Option00 7.STARTING of Special Pricing Hour Value of Coin 2 Canadian Dollar Drop White & Colors keypad Example All Single Load Models Dryer Diagnostic ModeDryer Help Mode Stacked Models Only