Maytag MDB7600AW, MDB9600AW, MDB5600AW, MDB6600AW, MDBF550AW Service Manual

Service

Base manual covers general infomation. Refer to individual T echnical Sheet for information on specific models.

Jetclean II™ Dishwashers

This manual includes, but is not limited to the following:

JDB4000AW MDB5600AW MDB6600AW MDB7600AW MDB8600AW MDB9600AW MDBF550AW MDBF750AW MDBH950AW MDBH970AW MDBL540AW MDBL740AW

This manual is to be used by qualified appliance technicians only. Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person.

16021814 Revison 0

August 2002

Important Information

G

!

N

!

Pride and workmanship go into every product to provide our customers with quality products. It is possible, however , that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE INFORMATION IN THE

APPROPRIA TE SERVICE MANUAL BEFORE BEGINNING REPAIRS.

Important Notices for Consumers and Servicers

WARNIN

T o avoid risk of serious injury or death, rep airs should not be attempted by unauthorized persons, dangerous conditions (such as exposure to electrical shock) may result.

CAUTIO

Maytag will not be responsible for any injury or property damage from improper service procedures. If performing service on your own product, assume responsibility for any personal injury or property damage which may result.

T o locate an authorized servicer , please consult your telephone book or the dealer from whom you purchased this product. For further assistance please contact:

Customer Service Support Center

CAIR Center

Web Site Telephone Number

WWW.AMANA.COM........................................................................... 1-800-843-0304

WWW.JENNAIR.COM......................................................................... 1-800-536-6247

WWW.MAYTAG.COM ......................................................................... 1-800-688-9900

CAIR Center in Canada ...................................................................... 1-800-688-2002

Amana Canada Product ...................................................................... 1-866-587-2002

Recognize Safety Symbols, Words, and Labels

DANGER

DANGER—Immediate hazards which WILL result in severe personal injury or death.

WARNING

!

WARNING—Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION

CAUTION—Hazards or unsafe practices which COULD result in minor personal injury or product or property

damage.

Table of Contents

Important Information

Important Notices for Consumers and Servicers.... 2

Recognize Safety Symbols, Words, and Labels ... 2

Section 1. Important Safety Information

General Information...............................................1-4

Related Publications.............................................1-4

General Precautions and Warnings.......................1-4

Product Warning Labels

Junction Box Warning...........................................1-5

Support Panel Warning.........................................1-5

Control Cover Warning ..........................................1-6

Section 2. Electrical Equipment & Testing

Electrical T est Equipment .....................................2-7

Appliance T est Meter ............................................2-7

Continuity T esting .................................................2-7

Digital Test Meter..................................................2-7

Voltage Checks..............................................2-8

Motor T est Cord ....................................................2-8

Grounding Polarity ................................................2-8

Electrical Tests

Water V alve ..........................................................2-9

Detergent / Rinse Aid Disp W ax Mtr Check ..........2-9

V ent W ax Motor Check.......................................2-10

Section 3. Cycles & Options

Cycles ................................................................ 3-11

Options............................................................... 3-12

Display ............................................................... 3-13

Control Style by Model........................................ 3-14

Control Style by Model........................................ 3-15

Section 4. Trouble Shooting

Will Not Fill......................................................... 4-16

Overflows ............................................................ 4-16

Poor Water Circulation........................................ 4-16

Poor Washability ................................................ 4-17

Will Not Drain ..................................................... 4-17

Continues to Drain .............................................. 4-17

Poor Drying ........................................................ 4-17

Water Leaks ....................................................... 4-18

Noise .................................................................. 4-18

Will Not St art or Program....................................4-18

Will Not Fill.........................................................4-18

Will Not Wash ....................................................4-19

Will Not Drain ..................................................... 4-19

Will Not Dry ........................................................4-19

Manual Function T est ......................................... 4-19

Field Service Test ...............................................4-19

Section 5. Service and Disassembly Procedures

Front Support and T oe Panel Removal ................ 5-20

Inner Door Panel Removal...................................5-21

Detergent / Rinse Aid Disp..................................5-21

Wax Motor Detergent / Rinse Aid Disp................5-22

Vent.................................................................... 5-22

Wire Cover .......................................................... 5-22

Door Latch & Switch Holder Assembly................ 5-23

PC Board............................................................ 5-24

Technical Sheet .................................................. 5-24

Control Panel...................................................... 5-24

Door Latch Strike................................................ 5-24

Door Gasket .......................................................5-25

Outer Door.......................................................... 5-25

Door Hinge And Support .....................................5-26

Door Spring......................................................... 5-26

Door Spring And Component Replacement..........5-27

Over Pressure Filter ............................................ 5-27

T op W ash Ar m ....................................................5-27

Manifold ..............................................................5-28

Docking S tation .................................................. 5-28

Lower Wash Arm ................................................ 5-28

Float ...................................................................5-29

Heating Element ................................................. 5-30

Thermostats ....................................................... 5-31

Water V alve ........................................................5-31

Air Water Inlet ....................................................5-32

Upper Rack Removal .......................................... 5-33

Tub Wheels ........................................................5-33

Turbidity Sensor.................................................. 5-33

Drain Pump ........................................................ 5-34

Wash Motor Assembly ....................................... 5-34

Appendix A

Installation Instructions ....................................... A-2

Appendix B

Jenn-Air User’s Guide ......................................... B-2

Appendix C

MDB-3 User’s Guide........................................... B-2

Appendix D

MDB-4 User’s Guide........................................... D-2

Important Safety Information

WARNING

!

To avoid personal injury or death from improper servicing, make sure you read and understand the descriptions and meaning of various safety symbols, words and labels used in this manual, before attempting any procedures described in the manual. Failure to understand and comply with safety information may result in severe personal injury or death.

General Information

This Service Manual describes the operation, disassembly , troubleshooting, and repair of Maytag Dishwashers. It is intended for use by authorized servicer’s who troubleshoot and repair these units.

NOTE: It is assumed that users of this manual are

familiar with the use of tools and equipment used to troubleshoot and repair electrical, and mechanical systems; and understand the terminology used to describe and discuss them.

®

Related Publications

This is a base service manual, covering a range of similar models. It is intended to be used in conjunction with the Parts Manual and Technical Sheet covering specific model being serviced.

General Precautions and Warnings

• Dispose of discarded appliance and shipping or packing material properly .

• Do not allow children to play in or on dishwasher .

• Do not abuse, sit, stand or play on door or racks of a

dishwasher.

• Use only detergents and rinse agents recommended for use in a dishwasher.

• S tore dishwasher detergent and rinse agents out of the reach of children.

• If the dishwasher drains into a food disposer , make sure disposer is completely empty before running dishwasher.

• Repairs should be done by a qualified technician.

• Do not tamper with controls.

• Do not touch the heating element during or immediately

after use.

• Load sharp knives with the handles up to reduce the risk of cut-type injuries or damaging seal.

To avoid risk of personal injury or death due to electrical shock:

• Grounding wires and wires colored like grounding wires are NOT to be used as current carrying conductors.

• St andard accepted color coding for ground wires is green or green with a yellow stripe.

• Grounding wires should not be removed from individual components while servicing, unless component is to be removed and replaced.

• Replace all removed grounding wires before completing service.

To avoid death, severe personal injury, fire or electrical shock when using dishwasher observe the following:

• Observe all local codes and ordinances.

• Disconnect electrical power to dishwasher before

servicing.

• Connect dishwasher to a grounded metal, permanent wiring system.

• DO NOT ground to gas line.

• DO NOT ground to cold water pipe if pipe is

interrupted by plastic, non-metallic gaskets, or other insulating (non-conducting) materials.

• Check with a qualified electrician if you are not sure this appliance is properly grounded.

• This dishwasher is designed to operate on regular house current (120 V , 60 Hz). Use a circuit equipped with a 15 ampere fuse or circuit breaker. Use a 20 ampere fuse if dishwasher is connected with a food waste disposer.

• Under certain conditions, hydrogen gas may be produced in a hot water system that has not been used for 2 weeks or more. HYDROGEN GAS IS EXPLOSIVE. If hot water system has not been used for such a period, before using dishwasher, turn on all hot water faucets and let water flow from each for several minutes. This will release any accumulated hydrogen gas. HYDROGEN GAS IS FLAMMABLE. Do not smoke or use an open flame during this time.

• Do not store or use combustible materials, gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

• Do not wash plastic items unless marked "dishwasher safe" or the equivalent. If not marked, check with manufacturer for recommendations. Items that are not dishwasher safe may melt and create a potential fire hazard.

• To avoid entrapment and/or suffocation, remove door or door latch mechanism from any dishwasher that is discarded or not in use.

WARNING

!

WARNING

!

Important Safety Information

:

e

s

.

s

PRECAUCIÓN

Desconecte la

energía eléctrica

antes de darie

servicio.

ATENCIÓN:

Solamente use conductores de

cobre.Use cables d

suministro adecuado

para 75° (167°F).

CAUTION:

Disconnect electrical power

before servicing.

ATTENTION:

Use copper conductors only.

Use supply wires suitable for 75°C (167°F).

ATTENTION:

Débrancher de

l'alimentation électrique avant tout dépannage

ATTENTION:

Utiliser des conducteurs en cuivre uniquement. Utiliser des fils d'alimentation pouvant supporter une

température de 75°C (167°F).

GROUNDING: This unit must

be grounded in accordance with local and/or national electric codes.

WARNING: The heating element, drainpump, harness clip, dispenser mount, and water valve are intentionallynot grounded and may present a risk of electrical shock only during servicing. Discharge motor capacitior before servicing. Failureto follow these instructions can result in death, seriousinjury, fire, or electrical shock.

MISE Á LA TERRE:

doit être relié à la terre conformément aux codesélectriques locaux et/ou nationaux.

AVERTISSEMENT:

la pompe de vidange, l'attache du hamais, la monture de distributeur et l'électrovanne ne sont pas reliés à la terre intentionnellement et peuvent présenterdes risques d'électrocution uniquement en cas d'interventionde service aprés-vente.Déchargerle condensateur avanttoute intervention. Le non-respect de ces consignes peut entrainer la mort, des blessures graves, l'incendie ou l'électrocution.

Cetappareil

La résistance,

CONEXIÓN A TIERRA: Esta unidad debe estar conectada a tierrade acuerdo con los códigos eléctricos locales y nacionales. ADVERTENCIA: El elementocalentador, la bomba de drenado,el sujetador del arnés, el montaje del surtidory la válvula de agua están sin conectara tierra intencionalmente podrían presentar un riesgo de descargas eléctricas cuando se les da servicio solamente. El no seguir estas instruccionespodría causarla muerte, lesione graves, incendios o descargas eléctricas.

Important Safety Information

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WARNING:

Disconnect power before servicing. Electronic control is energized at all times until power is disconnected. Capacitors on control may remain active after electrical power is disconnected. Failure to follow these instructions can result in death, serious injury, fire, or electrical shock.

ADVERTENCIA:

Desconecte la energí antes de darle servicio. El control electrónico está energizado todo el tiempo hasta que se desconecta la energía. Los capacitores del control podrían permanecer activos después de desconectar la energía eléctrica. El no seguir estas instrucciones podrí causar la muerte, lesiones graves, incendios o descargas eléctricas.

AVERTISSEMENT:

Débrancher avant toute intervention. La commande électronique est constamment sous tension à moins que l'appareil ne soit débranché. Les condensateurs de la commande peuvent rester sous tension une fois l'appareil débranché. Le non-respect de ces consignes peut entraîner la mort, des blessures graves, l'incendie ou l' électrocution.

Section 2. Electrical Equipment & Testing

Electrical T est Equipment

The equipment required to service these models depends largely upon the condition encountered. Locating a malfunction will often require the use of electrical testing equipment such as:

Appliance T est Meter Clamp-On Ammeter Motor T est Cord

Appliance T est Meter

An Appliance Test Meter is a multi-purpose tester combining an AC/DC volt age tester with a multi-range ohmmeter.

The easiest means of testing electrical components is "Continuity Testing" with an appliance meter . Continuity is a complete or continuous path from one point in an electrical circuit to another.

Digital Test Meter

can be used to check for open or closed circuits, measure resistance, AC and DC volts, and temperature.

Analog T est Meter

can be used to check for open or closed circuits, measure resistance, AC and DC volts, and temperature.

The obvious advantages of being able to check electrical components and circuits without power applied is one of the features of the Ohmmeter. Multiple ranges allow accurate determination of resistances of both single components and entire circuit paths. Resistance is measured in "Ohms."

WARNING

!

T o avoid risk of personal injury or death due to electrical shock:

Always be sure the power has been disconnected before making resistance measurements. Failure to do so will also result in damage to your meter! Internal batteries provide all the power needed to make resistance checks. They should be checked at least once a year and replaced as needed.

Continuity T esting: is a process of eliminating electrical

components involved in a given function of the appliance, until the inoperative part is found. By reviewing the list of possible electrical problems under a given condition, and then performing appropriate continuity checks of the parts involved, you should be able to locate the electrical component which is inoperative.

NOTE: When checking components or circuit paths for continuity , external wiring should be disconnected to eliminate false readings through external paths. Isolate what you want to test.

ELECTRICAL EQUIPMENT & TESTING

VOLTAGE CHECKS

Generally , these checks will consist of taking readings at the wall receptacle in order to determine the availability of voltage to the product. V oltage checks on individual components of a product are not recommended due to the possibility of electrical shock. Component part testing is best accomplished through continuity checks with an Appliance Test Meter.

NOTE:

indicated range may cause permanent damage to the meter. T o prevent damage, first select highest range and then lower the range for readings which fall within the lower scale.

Clamp-On Ammeter

can be used to detect shorts. Overloads on the circuit breaker or fuse can be traced to either the appliance or circuit breaker by checking the current draw.

Each circuit in an appliance has a "Normal" current draw, which is an indication of the performance of that circuit. Current draw levels of less than or more than normal give clues to possible malfunctions. The clampon ammeter measures these circuits without breaking the circuit by measuring the strength of the magnetic field developed around each conductor. Current is read by separating the conductors and clamping the jaws of the ammeter around each conductor on which current is read. Low amperage readings indicate problems, such as damaged heating elements, etc. High amperage readings indicate the unit being tested is operating under an increased mechanical or electrical load.

NOTE: Overloads on a circuit breaker or fuse can be

traced to the product being tested or the circuit breaker (or fuse) by checking the products current draw . If the amperage reading is less than the breaker reading, the breaker or fuse box is at fault.

Use of the meter on voltage higher than the

Use of Ammeter on dishwasher:

1. Motor Current - the reading can be taken at the leads on the motor start relay or at the male connector.

2. Heating Element Current - The reading can be taken using either lead to the element.

Motor Test Cord

DANGER

!

T o avoid risk of personal injury or death due to electrical shock:

• Disconnect electrical power to dishwasher before servicing.

• Always plug test cord into a properly grounded

receptacle.

• Always make connection to components before plugging test cord into receptacle.

A motor test cord may be used to electrically check operation of the various electrical components without removing them from the unit. Testing in this manner merely determines whether or not the part will function independently of other electrical components. In order to make accurate tests, proper connection of the motor test cord is important. With the aid of the drawings under Drive Motor Test, installation of the motor test cord may be done quickly and accurately .

Grounding and Polarity

DANGER

!

T o avoid risk of personal injury or death due to electrical shock:

• Do not cut or remove the grounding prong from any

plug.

The receptacle used for all Maytag products operating on 120 V AC must be properly grounded and polarized.

The power cord used on the appliances should be equipped with a three (3) prong polarized grounding plug

Electrical Equipment & Testing

for protection against shock hazard and should be plugged directly into a properly grounded and polarized receptacle. It is the responsibility of the person installing the appliance to assure it is adequately grounded and polarized at the point of installation, taking into consideration local conditions and requirements. In cases where only a two (2) prong receptacle is available, it is the personal responsibility of the consumer to have it replaced with a properly grounded three (3) prong receptacle. All grounding and wiring should be done in accordance with National, State, and Local codes.

NOT USE AN ADAPTER PLUG WITH THIS APPLIANCE.

DO

ELECTRICAL TESTS

WARNING

!

T o avoid risk of personal injury or death due to electrical shock:

Wax Motor Check

Detergent / Rinse Aid Dispenser

A single Wax Motor is used to activate both the release of the Detergent Cup Cover and the rinse aid from the reservoir.

T o check the operation of the W ax Motor, removal from the Dispenser Retainer or Inner Door is not necessary . First, snap the Detergent Cup Door shut. Then, connect a Power Test Cord across the two terminals of the Wa x Motor. Plug the Power Test Cord into a 120 VAC receptacle. The plunger in the center of the Wax Motor should "push out" and actuate the Dispenser in approximately 45-60 seconds. Remove voltage to the Wax Motor and allow the plunger to retract into the Wax Motor. Apply voltage to the W ax Motor again and observe for proper lifting of the rinse aid plunger .

• Disconnect electrical power to dishwasher before servicing.

• Always plug test cord into a properly grounded receptacle.

• Always make connection to components before plugging test cord into receptacle.

WATER VALVE TEST

The Water V alve may be checked without removing it from the Dishwasher.

T o check the W ater V alve for operation, hook up the test cord as follows:

Electrical Equipment & Testing

Wax Motor Check- Vent

A single continuous duty wax motor is used to operate the vent.

WARNING

!

T o avoid risk of personal injury or death due to electrical shock:

• Disconnect electrical power to dishwasher before servicing.

• Always plug test cord into a properly grounded receptacle.

• Always make connection to components before plugging test cord into receptacle.

Connect a Power Test Cord across the two terminals of the Wax Motor . Plug the Power Test Cord into a 120 V AC receptacle. The punger should extend (push out) and force the Vent Flap tight against the vent opening in approximately 45-60 seconds. When power is removed from the Wax Motor , the plunger should retract along with the Vent Flap, opening the vent.

Section 3. Cycles & Options

Qu ietSer ies300

Cancel

DELAY

1-9

Heating Delay

Sanitized

3

Heated

Dry

Options

Sanitize

Tough

Scrub

Extra Rinse

Heavy

Wash

Normal

Wash

Cycles

Light

Wash

Washing

Rinse

Only

Drying

Clean

Auto

Clean

START/

Covers all other models

Auto

Clean

Heavy

Wash

Normal

Wash

Cycles

Light

Wash

Rinse

Only

Quick Wash

Heated

3 Sanitize

Dry

Options

Extra

Rinse

Tough

Scrub

Plus

160°

Wash

Clean

Sanitized

MDB9600 Only

See User's Guide for specific operation.

Cycle Description

Auto Clean Designed to auto select the number of fills and length of wash time based on soil level

of the dish load. Water usage ranges from 3 to 8 gallons.

Heavy Wash Designed to provide a longer cycle for washing items with heavy

food soils. Water usage is 8 gallons.

Normal Wash Designed to wash loads containing dishes with normal amounts of food soils.

Water usage ranges from 3 to 6 gallons.

Light Wash Designed to wash loads containing dishes that are lightly soiled. Water usage is 5

gallons.

Quick Wash Designed for light food soils. The cycle ends with a rinse and does not include drying.

Water usage is 4 gallons.

Rinse Only Rinses dishes being held until the dishwasher is full, and another

cycle is selected. This cycle helps reduce the potential for development of odors. Water usage is 2 gallons.

Cycles & Options

Qu ietSeries300

Cancel

DELAY

1-9

Heating Delay

Sanitized

3

Heated

Heavy

Wash

Normal

Wash

Cycles

Light

Wash

Washing

Rinse

Only

Drying

Clean

Auto

Clean

START/

Covers all other models

Auto

Clean

Heavy

Wash

Normal

Wash

Cycles

Light

Wash

Rinse

Only

Quick Wash

Heated

3 Sanitize

Dry

Options

Extra

Rinse

MDB9600 Only

See User's Guide for specific operation.

Option Description

T ough Scrub™ This option adds fills, heat and/or wash time to the Tough Scrub Plus™ wash cycle.

Dry

Options

Sanitize

Tough

Scrub

Plus

Tough

Scrub

160°

Wash

Extra Rinse

Clean

Sanitized

Sanitize This option monitors cycles for sanitization. Extra Rinse This option adds an extra rinse to the cycle which helps in hard water situations. 160° Wash This option raises temperature in the final rinse to 160° F. Heated Dry This option improves drying results by turning the heating element on and off during

the dry portion of the cycle. Delay Delays the start of the dishwasher based on user input. Control Lock Lock's the control touch pads from unwanted usage. This option does not lock the

door.

Cycles & Options

Auto

Clean

Heavy

Wash

Heavy

Wash

Normal

Wash

Cycles

Wash

Normal

Wash

Light

Cycles

Light

Wash

Washing

Rinse

Only

START/

Cancel

Drying

Rinse

Only

Clean

Auto

Clean

START/

Covers all other models

Quick Wash

QuietSeries 300

Qu ietSeries300

Cancel

Heated

3

Dry

DELAY

1-9

Heating Delay

Sanitized

Sanitize

DELAY

Heated

3

Dry

Options

Extra

Rinse

1-9

Options

Sanitize

Tough

Scrub

Plus

Tough

Scrub

160°

Wash

Extra Rinse

Sanitized

Clean

MDB9600 Only

Display Description

Clean The "Clean" light illuminates at the end of the cycle and remains on until the door has

been open continuously for 30 seconds. Drying The "Drying" light illuminates until the cycle is complete. Washing The "Wash" light illuminates through all the rinse and wash portions of the cycle. Heating Delay The "Heating Delay" light illuminates when the cycle is being extended to heat the

water. Clean/Sanitized These two lights illuminate from the end of cycle until the next cycle is selected,

or the door has been open continuously for 30 seconds. Delay The "Delay" light will illuminate whenever a delay count down is in progress, or until

the "Delay" pad is pressed again.

Cycles & Options

Heavy

Wash

Heavy

Wash

Normal

Wash

Normal

Wash

Cycles

Light

Wash

Cycles

Light

Wash

Cycles

Washing

Rinse

Only

Washing

Rinse

Only

Washing

Drying

Qu ietSeries100

START/

Cancel

DELAY

2-4-6

MDB5600

ENN-AIR

START/

Cancel

Qu ietSer ies100

DELAY

JDB4000

2-4-6

Sanitized

Clean

2

4

6

2

4

6

3

Sanitized

Clean

3

Sanitized

Clean

Heated

Dry

Heated

Dry

Options

Sanitize

Options

Sanitize

Options

Tough

Scrub

Tough

Scrub

Extra Rinse

Heavy

Wash

Heavy

Wash

Heavy

Wash

Normal

Wash

Normal

Wash

Normal

Wash

Light

Wash

Cycles

Light

Wash

Cycles

Light

Wash

Rinse

Only

Washing

Rinse

Only

Washing

Rinse

Only

Drying

Clean

START/

Cancel

DELAY

2-4-6

MDBH950

MDBF550

QuietSeries 200

Auto

Clean

START/

Cancel

MDB6600

Auto

Clean

START/

Cancel

2

4

6

Sanitized

Clean

DELAY

2-4-6

2

4

3

6

Qu ietSeries300

Heating Delay

Sanitized

DELAY

1-9

3

Heated

Dry

Heated

Dry

Heated

3

Dry

Options

Sanitize

Options

Sanitize

Tough

Scrub

Tough

Scrub

Extra Rinse

MDB7600 MDB8600

Cycles & Options

Auto

Clean

Heavy

Wash

Heavy

Wash

Heavy

Wash

Normal

Wash

Normal

Wash

Cycles

Normal

Wash

Light

Wash

Light

Wash

Cycles

Light

Wash

Washing

Rinse

Only

Washing

Rinse

Only

Drying

Rinse

Only

Clean

Auto

Clean

Auto

Clean

Quick Wash

START/

Cancel

MDBH970

START/

Cancel

MDBF750

Heated

3

Qu ietSeries200

Heating Delay

Sanitized

DELAY

1-9

Qu ietSeries200

Heating Delay

Sanitized

DELAY

1-9

Dry

Sanitize

Heated

3

Dry

Heated

3

Dry

Options

Extra

Rinse

Options

Sanitize

Options

Sanitize

Tough

Scrub

Plus

Tough

Scrub

Plus

Tough

Scrub

160°

Wash

Extra Rinse

Clean

Sanitized

START/

Cancel

QuietSeries 300

MDB9600

DELAY

1-9

Section 4. Electrical-Mechanical

!

Troubleshooting

WARNING

T o avoid risk of electrical shock, personal injury , or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

CAUTION

Units covered in this manual are polarized. Reversing polarity of a unit or any of its components will cause damage. To avoid reversing polarity, any wires disconnected or removed during service must be reconnected to the same location. T o ensure wires are reconnected to the proper location, tag or otherwise mark the wires before disconnecting or removing.

Will Not Fill

Water Access Valve

Check to determine if the valve is turned on and water is available to the Dishwasher . Check water pressure.

Circuit Breaker/Fuse

Check for tripped breaker or blown fuse. Reset or replace as necessary .

Door Latch

Check door switches for continuity . With door switches engaged, no continuity , replace switch.

Float

Check float position. If in the up position, check for obstruction or disengagement from the Float Switch Arm.

Float Switch

If the float is in the down position, check the switch for continuity . If no continuity, replace the Float Switch.

Water Valve

Check Solenoid for continuity . No continuity , replace Water V alve. Check Inlet Screen for restrictions. Clean screen or replace Water V alve as necessary. (See section

5).

NOTE: Low water pressure can result in failure of the Water Valve to close properly.

Float

Ensure that the Float isn't stuck in the down position. Check for sediment buildup. Clean and/or replace as necessary.

Float Switch Actuator Lever

Check the actuator lever on the bracket. It must be able to move freely . Repair or replace as necessary . (See section 5).

Float Switch

Check Float Switch for continuity with the Float in the up position. If continuity is present and Float moves up and down freely , replace Float Switch.

POOR WATER CIRCULATION

Water Level - Too Low

Normal water fill should be at level depicted by arrows.

Wiring/Electrical Connections

Check for loose or frayed wire terminal connections. Check for broken wire within harness. Repair or replace as necessary .

Overflows

Water Valve

Check that water continues to flow when electrical power is turned off. If the water continues to flow without electrical power, replace W ater V alve. 4-16 16021814 Rev. 0 ©2002 Maytag Appliance Sales Company

Pump Assembly

Check assembly for obstructions or restricted movement of parts. Repair and/or replace p arts as necessary.

Electrical-Mechanical Troubleshooting

!

WARNING

T o avoid risk of electrical shock, personal injury , or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Filters

Check for blockage of Strainer , Over Pressure Filter . Repair as necessary .

Poor Washability

Spray Arms

Check all Spray Arms for blockage of water ports or cracks. Check for proper rack loading to avoid interference with Spray Arms during wash action. Check for proper sealing, fastening, and movement of Spray Arms. Repair as necessary.

Filters

Check for blockage of Strainer , Primary Filter , and Filter Support. Repair as necessary .

Detergent Cup Cover

Check spring hinge operation of Detergent Cup Cover. Repair as necessary .

Detergent Cup

Check operation of Detergent Cup Assembly , W ax Motor, Actuator, Linkage, and Cover Latch. Rep air and/or replace parts as necessary. Note: For testing of Wax Motor, see Section 2.

Rinse Dispenser

Check level of rinse aid in reservoir. Check rinse aid dispenser setting.

Wash Delivery System

Check manifold and Docking Station for good seal and no leaks.

Will Not Drain

Pump Assembly

Check pump assembly for obstructions or restricted parts. Repair or replace p arts as necessary.

Wiring/Electrical Connections

Check for loose or frayed wire terminal connections. Check for broken wire within harness. Repair or replace as necessary .

Continues To Drain

Control Board

Check Control Board for proper operation.

Poor Drying

Water Temperature

Check for low water temperature. T emperature should be between 120 - 150 degrees Fahrenheit. If not, advise consumer to adjust water heater setting. Encourage consumer to purge water lines to the dishwasher area prior to starting the dishwasher .

Cycle Options

Advise consumer use of options available on dishwasher that improve drying. Options that improve drying are Heated Dry , and 160° Wash.

Detergent

Check water hardness. Instruct consumer on detergent usage, one teaspoon of detergent per grain of water hardness.

Rinse Dispenser

Check level of rinse aid in reservoir. Check dispenser setting under cap. Use "MAX" for hard water conditions.

Inadequate Drainage

Check Drain Pump for proper operation. Check the drain pipe connections and repair as needed. If draining into the garbage disposal, check for unprocessed food waste at drain hose connection to disposer . Clean out as needed.

Drain Hose

Check drain hose for kink or restrictions. Reroute or remove any restriction of drain hose as needed.

Improper Rack Loading

Check how the consumer loads the dishes into the racks. Improper loading of some types of dishes can trap water which causes dishes not to dry.

Heating Element

Check load readings listed on Technical Sheet located behind T oe Panel.

Electrical Mechanical Troubleshooting

!

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Thermostat

Check mating surface of the High Limit Thermostat face to surface of tub enclosure. Contact area must be flat. Adjust the thermostat placement if necessary . See T echnical Sheet, located behind Toe Panel for thermostat data.

Noise

Banging

Check for loose Spray Arms. Check for dishes interfering with Spray Arm rot ation. See loading information in the User's Guide at the end of this manual.

Water Leaks

Installation

Check Dishwasher for proper leveling and squareness in cabinet.

Door Alignment

Check proper alignment of Door Liner to Door Gasket.

Door Gasket

Check for torn or damaged Door Gasket. Repair or replace as necessary .

Hoses

Check for loose hose clamps or hoses that leak. Tighten hose clamps or replace hoses as needed.

Spray Arms / Manifold

Check for cracks and replace as necessary .

Detergent / Rinse Aid Dispenser Seal

Check Rinse Aid Dispenser Seal for proper positioning or cracking. Reposition or replace as needed.

Water Valve

Check Water V alve body for damage and leaks. Replace if necessary . Also, check plumbing connections to Water V alve.

Wash Motor Assembly

Check for water leak between Pump Assembly and tub.

Hammering/Chattering

Check Water V alve for , noise, low voltage, or high valve coil resistance. Replace W ater Valve if needed. Also, check incoming water supply line for proper size and pressure. Make sure the supply line is secured.

Grinding

Check for objects in Pump Assembly. If objects are found, inspect Pump Assembly for damage. Repair as needed.

Vibration

Check components for source of vibration. Adjust and/or tighten as needed.

Will Not Start Or Program

Control Board

Check incoming voltage to Control Board.

Membrane Switch

Check for proper operation of Membrane Switch. See membrane readings on the Technical Sheet located behind toe panel.

NOTE: Make sure the pin connectors are making proper

contact with pins on the Control Board. If the voltage is correct into the Control Board, and the board will not activate, replace board.

Will Not Fill

Drain Pump Assembly

Check Pump Assembly Housing for cracks. Check Drain Pump "O" ring for leaks.

Water Valve

Check Water V alve circuit. See Technical Sheet for water valve data located behind toe panel.

NOTE: Make sure the pin connectors are making proper

contact with pins on the Control Board.

Electrical Mechanical Troubleshooting

!

WARNING

T o avoid risk of electrical shock, personal injury , or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Will Not Wash

Wash Motor

Check Wash Motor circuit. See data listed on the T echnical Sheet, located behind toe panel.

Will Not Drain

Drain Motor

Check Drain Motor circuit. See data listed on the T echnical Sheet, located behind Toe Panel.

Will Not Dry

Vent Assembly

Check V ent Assembly for proper operation. Check W ax Motor.

Heating Element

Check Heating Element circuit. See data listed on the T echnical Sheet, located behind Toe Panel.

Manual Function Test

See T echnical Sheet, located behind T oe Panel.

Field Service T est

See T echnical Sheet, located behind T oe Panel.

Section 5. Service and Disassembly Procedures

!

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

The following paragraphs describe how to disassemble unit under test. Disassembly to some extent is required to install unit, to perform troubleshooting procedures, and to remove and replace failed components.

Component names used throughout disassembly procedures are the same as those used in Parts Manuals.

For quicker reassembly , disassemble unit under test only to extent necessary to troubleshoot and repair . Unless noted, reassembly is opposite of disassembly .

WARNING

!

T o avoid risk of personal injury or death due to electrical shock, ground wires and wires colored like ground wires are NOT to be used as current carrying conductors. The standard accepted color coding for ground wires is green or green with a yellow stripe. Electrical components such as the water valve and motor are grounded through an individual wire attached to the electrical component. Ground wires should not be removed from individual components while servicing, unless the component is to be removed and replaced. It is extremely important to replace all removed ground wires before completing service.

Front Support and Toe Panel Removal

Removal of Front Support and T oe Panel will allow access to the Water Valve, Float Switch Assembly, Electrical Junction Box, hoses, thermostats, St art Capacitor and Motor/Pump Assembly.

Removal

1. Disconnect power to the machine.

2. The Front Support Panel is held by 2 screws, one each side. Remove both screws.

3. The Toe Panel is held by 2 screws, one each side.

Service and Disassembly Procedures

!

WARNING

T o avoid risk of electrical shock, personal injury , or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Inner Door Panel

Removal of the Inner Door Panel will allow access to the Microprocessor Board, Door Switches, Detergent / Rinse Aid Dispenser, and Vent Assembly.

Removal

1. Disconnect power to the machine.

2. Open the Dishwasher door.

3. Remove the 1 1 T orx™ screws along the sides and top of the Inner Door Panel.

4. Separate the Inner Door Panel from the Outer Door .

5. Disconnect wires from the Vent and Dispenser W ax Motors before pulling the Inner Door Panel away from the Dishwasher.

IMPORTANT: When replacing Inner Door Panel, remove

Inner Door reinforcement, Bottom Seal and install on new panel.

Detergent / Rinse Dispenser Mechanism and Reservoir

Checking Operation

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

3. Snap the Detergent Door shut.

4. Gently lift the lever of the dispenser mechanism until a click is herd. The Detergent Door releases. Release the lever.

5. Lift the lever again. Now the actuator will lift the Rinse Aid Plunger.

Service and Disassembly Procedures

!

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Wax Motor Detergent / Rinse Dispenser

Removal

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

3. Remove the 6 mounting screws securing the Detergent Dispenser mounting bracket.

4. T o remove the W ax Motor , pry out of retainer. NOTE: It is not necessary to remove Detergent

Dispenser before removing Wax Motor .

Vent

The Vent is located on the Inner Door Panel to allow moisture to be vented outside of the Dishwasher during the dry cycle.

Removal

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

3. Rotate V ent Cover counter clockwise 1/4 turn and lift off.

Wire Cover

The Wire Cover retains the Wire Harness to the bottom of the Tub. It is located on the bottom side of the Tub.

Removal

1. Disconnect power to the machine.

2. Remove Front Support and Toe Panel. (See paragraph Front Support and T oe Panel removal).

3. Remove 2 screws securing Wire Cover to bottom of Tub.

4. Feed Wire Harness out of bracket.

Service and Disassembly Procedures

!

WARNING

T o avoid risk of electrical shock, personal injury , or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Removal

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

3. Lift Door Latch Assembly out.

Switch Removal

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

Door Latch & Switch Holder Assembly

Two Door Switches are used in the Latch Assembly. Both switches are normally CLOSED and will open only when engaged by the Door Latch mechanism. Each switch is in series with respect to L1 and neutral line operations. Failure of either or both switches will result in rendering the Dishwasher inoperative.

3. Remove Door Latch and Switch Holder Assembly .

4. Depress locking tabs and lift switch from holder .

NOTE: Door Switches require no field adjustment.

Service and Disassembly Procedures

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

PC Board

Removal

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

3. T o access PC Board, remove 1/4" screw on PC Board Housing Cover.

4. T o remove PC Board, loosen (2) 1/4" screws securing PC Board Base to Control Panel.

5. Remove pin and ribbon connectors from PC Board.

6. Depress tabs on PC Board Housing to remove PC Board.

Technical Sheet

The Dishwasher T echnical Sheet is located behind the Toe Panel. The Schematic Diagram is unique to each model and contains the following:

Timing Sequence Chart Load Readings Component Specifications Manual Function T est Field Service Test Electrical Schematic

Control Panel

The Membrane/Facia on the Control Console is not replaceable.

Removal

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

3. Remove PC Board Housing Cover. (See p aragraph PC Board removal).

4. Disconnect Membrane Switch from PC Board.

5. Remove PC Board Base.

6. Lift out Latch Assembly.

7. Remove 4 screws securing Control Panel to Outer Door.

NOTE: Facia is susceptible to damage during

reinstallation.

DOOR LATCH STRIKE

The Door Latch serves as a mechanical actuator for Door Switch operation and provides door tension for proper door seal.

Service and Disassembly Procedures

!

WARNING

T o avoid risk of electrical shock, personal injury , or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Removal

1. Disconnect power to the machine.

2. Remove T orx™ screw securing S trike to T ub.

5. Check for proper Door Latch adjustment to ensure proper door sealing.

Outer Door

Removal

1. Disconnect power to the machine.

2. Remove the Inner Door Panel. (See paragraph Inner Door Panel removal).

3. Remove 2 screws securing PC Board Base to Inner Door Panel.

4. Lift off Latch Assembly .

5. Lay Outer Door to it's fully open position.

6. Prop door open, by inserting an object into the 1/8" dia. hole in hinge bracket.

DOOR GASKET

The Door Gasket provides a seal between the Door and the Tub.

Removal

1. Open Door.

2. From either corner, pull gasket up and out of tub recess.

Replacement

1. To ease installation, wet gasket with water.

2. St arting in the lower right corner , Gently work gasket into the recess of Tub up the right side.

3. With other end, place gasket flush with the Tub in lower left corner.

4. Gently work gasket in to the recess of the Tub, up the left side, and across the top.