Heater Assembly, Heater Will Not Turn On | Maytag 16010061 specification

Figure 4-7

b.If the fuse is functioning, check the six semiconductors on the heat sink visually for any damage. If damaged, replace motor control/wire harness assembly complete.

c.If no visible damage is present, check motor windings for any open circuits. (See Figure 4-8 & 4-9)Re- place motor if necessary.

Figure 4-8

Figure 4-9

9.Unplug the washer power cord and replace motor control board connec- tor JP4 when finished.

HEATER ASSEMBLY

The heater assembly located in the sump area of the outer tub is only on the MAH7500, LCD washer only. A thermistor located in the heater assembly monitors the water termperature in order to cycle the heater on/off to regulate the proper temperatures.

After the wash level has been reached, the control will turn the heater on until the heater thermistor indicticates the tempera- ture reaches or exceeds the target main wash temperature. Then the control will de-energize the heater. The heater will be turned back on when the heater thermistor indicates the temperature falls below the target main wash temperature – 5°F during the main wash. The control will cycle the heater off again when the temperature reaches the target wash temperature.

The intent is to keep the temperature between the target main wash tempera- ture and 5°F below that. When the heater is off, it will remain off for at least 10 sec- onds, and when the heater is turned on, it will remain on for at least 10 seconds. The heater should be turned off and will re- main off when the maximum heater on time limit is reached (37 minutes), or the end of the wash period is reached. The heater will be turned off at the beginning of bleach fill at the end of main wash. The heater will be turned off during add fills.

Heater Will Not Turn On

1The heater will not turn on if the door is not closed or if there is a problem with the door sense circuit.

16010486 (16008373-05)Section 4. Electrical Components & Testing4-7

Revised 02/01	©2001 Maytag Appliances Sales Company

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Maytag 16010061 service manual Heater Assembly, Heater Will Not Turn On

Contents

Washer Safety Precautions MAH3000 Introduction General N T E N T S Iii Section Motor General Information Installation Grounding Polarity Checks Specifications Washer Controls Series 17 & Later Input Definitions Water Valve Outputs Output Definitions Torque Output Cycle Sequence Definitions Miscellaneous Push-To-Start Relay Operation Cycle Review General Component Exploded View Electrical Test Equipment Electrical Components & Testing O u n d e d C o m p o n e n t s Timer & Console Switches Key 0 = Input Signal Not Asserted Machine Control C HIN E FU N Ctio N N T R O L L T a GE IM ER A R D Drive Motor Motor & Motor Control Test Motor Windings Check Disconnect power to the washer prior to testing Tachometer Circuit Diagnostics Unbalance Control System Tub Displacement Switch Inertial Unbalance Switch Maytag Corporation Shuts OFF When Push-To-Start Button Re- leased Troubleshooting Temperature Inputs Door Leaks Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting 3 1 Troubleshooting Facia. Press Timer knob onto the timer Shaft Miscellaneous Information Energy UsageWasher Wattages M O V a L Console Vertical Switches Push Button Timer Removal Maytag Corporation Door Assembly & Hinges Cabinet Assembly Front Panel Cabinet Vibration Absorber Door Lock Mechanism TOP Cover Troubleshooting Front Shroud Assembly Hinge Removal Access Panel Maytag Corporation Water Valve WATER-CARRYING Components AIR Dome Hose Water Level Pressure Switch REPLACEMENT/ROUTING Dispenser Assembly Front Water Flume Injector Pump Assembly Pump Accessory Kit Drain Hose Reverse the previous steps for replacement Maytag Corporation Baffles Door Boot Outer TUB Cover Replacement Spin Basket Assembly w/BALANCE Ring Profile Washer Spinner Support Locking Nut Drive Pulley Spinner TUB Support Seal System Outer TUB Assembly Counter WeightsBearings Inertial Unbalance Switch Strut Assembly Outer Tub Switch TUB Displacement Switch Maytag Corporation M O V a L Motor Drive System Machine Control Motor Control Motor Drive Sysytem Electrical Schematics & Timer I N F O R M a T I O N Timer Chart Prior to Series Electrical Schematic Series Timer Chart Series Electrical Schematic Series Timer Chart Series Electrical Schematic Series T E S Introduction Contents Electrical MAH4000/MAH5500A Control Facia Specifications Basic Machine Operation Washer Controls OverviewSeries 10 MAH4000 only Series 11 & Later Cycle Review Cycle Times Suds detection during stain cycle General overview of Stain Cycle General Component Exploded View Electrical Information TERMINAL/WIRE Water Carrying Components Operation Disconnect power and water to the machine Removal Disconnect power and water to the washer See -11 16010199 Revised 7/00 Maytag Appliances Sales Company Wiring Information Series 10 Schematic MAH4000 only Series 11 MAH4000 and MAH5500 Series 10 Timer Chart MAH4000 Series 11 Timer Chart MAH4000 & MAH5500A 16008373-05 Maytag Models covered in this manual supplement MAH5500B MAH7500A 16010486 Revised 02/01 Maytag Appliances Sales Company Specifications General InformationMAH5500B Control Facia MAH7500 Control Facia General Flow Of a Complete Wash Cycle Number of Rinses Cycle SequencesWash Time Tumble Wash Selections Tumbling Time Rinse Tumble Times Spin Speed Drain Pump Input Water TemperatureOption Selected ON/OFF Sequence of Pump During Spin Cycle Basic Control Board Philosophy for Both Washers Features of MAH5500B LED Washer User Interface Options Mode Display Characteristics Pressure Switch Input Temperature Sensor Input Door Lock Switch InputInput Modifications Defined Door LOCK/UNLOCK Solenoid Output Output Modifications DefinedSTART/PAUSE Input Tach Input Main Wash Target Temperatures Cycle Sequence DefinitionsWater Valve Outputs Bleach Dispense RedistributionSuds Detection Miscellaneous Door Lock PhilosophyDoor Lock Operation MAH7500A Power LOSS/FAILURESpecial Features Advertising Mode Service Mode LED WasherLCD Washer Fast Time Down Test Service Mode TableLED Washer Special Tests Quick Service Cycle Board Output Test Accessing The Help CodesBoard Input Test Help Codes Clearing the Help Codes Accessing Diagnostic CodesClearing Diagnostic Code List Number of Cycles Since Code Assigned User Interface Tests Accessing Service ModeService Tests LCD Washer During a cycle Service Cycle Detection DIAGNOSTIC/HELP Codes Exit diagnostic/help codes Return toSystem Check Help Codes Listing DIAGNOSTIC/HELP Code Tables Help Description Trigger Action to be Taken Help Description Trigger Action to be Taken Diag Description Trigger Action to be Taken Diagnostic Codes Listing Diag Description Trigger Action to be Taken Diag Description Trigger Action to be Taken Component Identification & Location General Component Exploded View Glossary of Terms Page Page LCD Model Electrical TestsFabric Softner Bleach Cold Hot Thermistor Coil Water Valve LED Model Door Lock Mechanism Machine Control INPUT/OUTPUT Voltages LCD Washer Membrane Pad Checks Motor Control Board Removal Drive MotorMotor Control Board Drip Shield Removal Motor & Motor Control Test Motor PhasesMotor Drive System Test Machine Control Board Output Test Heater Will Not Turn On Heater Assembly Thermistor Temperature Chart LCD Model LED Model Teardown & Wiring InformationConsole Removal Microprocessor Board Removal Cabinet Assembly Console Cover PlugDoor Latch Hoop Door Lock Mechanism Removal Discontinue power and water to the machine Pressure SwitchWater System Components Removal Pump AssemblyHeater Assembly Reinstallation Sump Cover Thermistor Removal MAH5500B MAH7500 Maytag Appliances Sales Company