Midea WQP6-3206B Service Guide

Technical Service Guide

Compact Dishwasher

MODEL SERIES:

WQP6-3206B

IMPORTANT SAFETY NOTICE

The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

WARNING

To avoid personal injury, disconnect power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.

RECONNECT ALL GROUNDING DEVICES

If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.

MIDEA C ONSUMER P RODUCTS

T ECHNICAL S ERVICE G UIDE

COPYRIGHT.

2003

A LL RIGHTS RESERVED .

T HIS SERVICE GUIDE MAY NOT BE REPRODUCED IN WHOLE OR IN PART , IN ANY FORM , WITHOUT

WRITTEN PERMISSION FROM THE MIDEA DISHWASHER MANUFACTURING

C

OMPANY

.

CONTENTS

Introduction ............................................................................................................................................................. 1

Specification ........................................................................................................................................................... 1

Control Panel Features ......................................................................................................................................... 1

Component Locator Views ................................................................................................................................... 1

Dishwasher Components ..................................................................................................................................... 1

Main control board ......................................................................................................................................... 1

Outer Door ...................................................................................................................................................... 1

Dispenser ........................................................................................................................................................ 1

Door Handle Assembly ................................................................................................................................. 1

Microswitch (door handle assembly) .......................................................................................................... 1

Inner Door ....................................................................................................................................................... 1

Shell ................................................................................................................................................................. 1

Operating board ............................................................................................................................................. 1

Air Breather Assembly .................................................................................................................................. 1

Siphon ............................................................................................................................................................. 1

Pressure switch .............................................................................................................................................. 1

Tank assembly ............................................................................................................................................... 1

Sump assembly .............................................................................................................................................. 1

Drain pump assembly ................................................................................................................................... 1

Motor pump assembly ................................................................................................................................... 1

Heater elements assembly ........................................................................................................................... 1

Heater elements support assembly ............................................................................................................ 1

Thermal resistor ............................................................................................................................................. 1

Check plate ..................................................................................................................................................... 1

Flowmeter ....................................................................................................................................................... 1

Inlet valve ........................................................................................................................................................ 1

Floater assembly ............................................................................................................................................ 1

Microswitch (floater assembly) .................................................................................................................... 1

Water softener ................................................................................................................................................ 1

Troubleshooting........................................................................................................................................................ 1

Introduction

WQP6-3201 compact electrical dishwasher with 6 washing cycles offers good washing performance to satisfy every washing requirement. Its electronic control is easy and convenient to operate. The rack can hold up to 6 sets of dishes. The size (width * depth * height: 550mm *

500mm * 436mm) can easily fit in any corner of the kitchen, and it’s recommended to locate at which the water hose connection is accessible.

Specification

Rating voltage:

Heater elements:

Water pressure:

Water temperature:

220~240V / 50Hz

1200W

0.04~1.0MPa

Colder water

Control Panel Features

2

8

1

1

2

3

4

Power Light :

Pressed down .

/

Washing Program : select wash cycles .

Start Reset Button : Press this button to start or

5

6

7

8

Delay Button To press the button to delay time

0 24hours )

(

3in1 function

:

:

/ / .) you need no salt and rinse aid but 3in1 tablet .

: button and delay button .

Display To show delay time salt warming , rinse aid warming , countdown of washing cycle s time lock function , 3in1 function you selected child

.

Component Locator Views

Front View

Interior View (with basket)

Part Name: 1 – cutlery basket 2 – basket 3 – dispenser

Interior View (With Basket Removed)

1

2

3

Part Name: 1 – Nut of air breather 2 – Nut of siphon 3 – Cover of softener

4 – Sprayer 5 – Filter System

Back View

Drain Hose connecter

Inlet Hose

Connecter

1

2

3

4

1

2

3

4

5

Part Name: 1 – Backboard 2 – Hollow plate 3 – Bottom board 4 – Power cord

Dishwasher Components

Note : Throughout this manual, features and appearance may vary from your model.

WARNING : Always turn off the electric power supply before servicing any electrical component, making ohmmeter checks, or replacing any parts.

Note : All voltage checks should be made with a voltmeter having a full scale range of 250 volts or higher. After service is completed, be sure all safety grounding circuits are complete,

all electrical connections are secure, and all access panels are in place.

Main control board

The main control board controls all electrical elements in dishwasher machine. It located in the protecting box in bottom of dishwasher machine. And it easy is replaced cannot work.

Removal and Replacement

1. Disconnect power supply. the the when it

3. Turn the dishwasher machine. And remove all screw for fixing cover of protecting box.

Screw

1

Part Name: 1 – cover of protecting box

4. Pull out all housings and terminals (including some locking terminals), then remove all screws for fixing main control board.

1

Screws

2

Part name: 1 – protecting box 2 – main control board

Note : mark all housings and terminals’ positions and colors before pulling out them.

Note : some terminals are locking terminals.

5. Reverse the above procedure to install. And check out all connectors connects well.

Outer Door

The outer door covers the door to the dishwasher and protects the detergent dispenser.

Removal and Installation

1. Open the door of dishwasher. And remove all screws for fixing outer door assembly.

2. Hold on outer door assembly. Remove all screws for fixing the operating board.

1

Screws

2

3

Part Name: 1 – outer door 2 – handle cover 3 – operating board

Caution : Inner door of edges are sharp. Some corners and edges of parts are sharp.

3. Remove all screws for fixing handle cover.

Screws


Front View (with outer door assembly removed)

1

2

3

6

7

4

5

Part Name: 1 – door handle assembly 2 – microswitch (Door handle assembly)

3 – dispenser 4 –door hinge (right) 5 – Rod for door hinges

6 – door hinge (left) 7 – operating board

Dispenser

The dispenser automatically dispenses both the the rinse agent at the appropriate times. The activated twice during a wash cycle. detergent and dispenser is

The first time, the dispenser is activated, the lever slides up the right-hand path of the connecting rod. This action moves the cover catch and releases the detergent cover. When deactivated, the lever resets to rest under the notch in the center of the

connecting rod. When activated for the second time in a cycle, the lever lifts the connecting

rod by the notch, lifting the rinse dispenser plunger and releasing the rinse agent. When deactivated, the lever returns to its original starting position. The magnetic sensor is connected to rinse aid warning light at control panel by wires. When the indicator lights up, it should add more rinse aid.

1 4

2 5

3 6

Part Name: 1 – cover catch 2 – detergent power compartment

3 – cover 4 –sight glass

5 – rinse agent cap 6 – detergent tablet compartment

1

3

2 4

5

Part Name: 1 – electromagnetic valve 2 – lever

3 – plunger 4 – connecting rod

5 – magnetic sensor


1. Remove outer door assembly. (see outer door removal and installation)

2. Pull out all terminals of dispenser. Then remove all screws for fixing dispenser.

Locking terminals Screws

1

Part Name: 1 – dispenser brackets 2 – dispenser

2


Door Handle Assembly


1. Disconnect power supply.


3. Unfit all snap-fits of outer door assembly for fixing microswitch (door handle assembly). And pull out microswitch (door handle assembly).

Note : Don’t pull out all terminals of microswitch (door handle assembly)

4. Remove all screws for fixing door handle assembly.

Screws

Snap-fits


Microswitch (door handle assembly)

The microswitch connects a forceful electric power. All the dishwasher are series connection with microswitch. microswitch closes, the dishwasher machine is stopped. loads of

When the




3. Pull out microswitch (door handle assembly). Then pull out all terminals of microswitch (door handle assembly)

Terminals


Inner Door

Caution : Inner door of edges are sharp.


1. Remove outer door assembly. (see outer door

removal and installation)

2. Pull out all terminals of dispenser and microswitch

(include some locking terminals). (see dispenser removal and replacement, and microswitch (door

handle assembly) removal and replacement)

3. Remove all screws for fixing inner door.

Screws

4. Remove dispenser. (see dispenser removal and replacement)

5. Remove door handle assembly. (see door handle assembly removal and replacement)


Shell


2. Remove all screws for fixing shell with tank assembly in the front of dishwasher machine.

Screws

3. Remove all screws for fixing shell with backboard and bottom board in the rear of dishwasher machine.

4. Turn the dishwasher machine. Remove all screws for fixing shell with bottom board in the bottom of dishwasher machine.

Snap-fits (3)

Snap-fits (1)

Snap-fits (4)

Screws

Screws

Snap-fits (5)

Snap-fits (2)

5. Unfix all snap-fits for fixing shell with other

Include two snap-fits of backboard (1), two snap-fits of washboard (3), and six snap-fits of bottom board (2), (4) and (5).

Tips : If you press edges of shell like illustrator, you can easy unfix all snap-fits removing all screws that fix shell with parts.

6. Reverse the above procedure to install.

And check out all connectors connects well.

Back View (with shell removed)

parts. after other

1

2

3

4

Part Name: 1 – corner board 2 – absorber 3 – backboard 4 – hollow plate

Operating board



3. Take out two corner boards, absorber sound, backboard, hollow plate.

4. Remove all screws for fixing cover of protecting box. (see main control board removal and

replacement)

5. Put out all housings for connecting operating board.

6. Then take out connecting lines of operating board from protecting box.

Connecting lines of operating board

Housings

7. Remove outer door assembly. (See outer door removal and installation).

8. Remove all screws for fixing operating board.


Air Breather Assembly



3. Contrarotate nut of air breather. Take out air breather gasket.

4. Take out gasket of air breather, and remove clamp for fixing connecting hose to air breather.


Clamp

Gasket of air breather

Siphon


1. Remove shell. (see shell removal and installation)


3. Contrarotate nut of siphon. Take out one way valve and gasket of siphon.

1

2

3

Part name: 1 – nut of siphon 2 – gasket of siphon 3 – one way valve

4. Remove two clamps for fixing connecting hoses with siphon.

Clamps


Pressure switch

As the dishwasher basin fills with water, the air pressure in the switch hose increases. When the pressure reaches the aim of switch will act and give a signal to main control board. Then will be work.



2. Take out two corner boards, absorber sound,

backboard, hollow plate.

3. Unfix the sheet copper for fixing the pressure switch hose. pressure value, the the drain

1

2

3

Part name: 1 – sheet copper 2 – pressure switch hose 3 – pressure switch

4. Unfix the snap-fit of bottom board for fixing pressure switch. And pull out pressure switch hose. Pull out all terminals of pressure switch

Snap-fits of bottom board

Note: mark all terminals’ colors and positions. Locking terminals


And check out all connectors connects well.

Tank assembly

1

2

3

4

5

6

7

Part Name: 1 – tank 2 – door handle assembly 3 – dispenser

4 – rod for door hinges 5 – right front chamber bracket

6 – strengthen muscle 7 – left front chamber bracket




4. Remove all screws for fixing cover of protecting box cover. Put out all housings for connecting operating board. Take out connecting lines of operating board from protecting box. (see operating board removal and replacement)

5. Remove outer door assembly (with operating board). (See outer door removal and

installation).

6. Put out all terminals for connecting Microswitch (door handle assembly), dispenser and rod for door hinges. Take out all connecting lines from inner door.

Note : some terminals are locking terminals.

7. The plug terminal of tank assembly is on the edge in the left side of tank assembly. Remove the screw and the nut for fixing ring terminals of ground lines.

Ring terminals

Plug terminal of tank assembly

Screw and nut

8. Unfix the sheet copper for fixing the pressure switch hose. (see pressure switch removal

and replacement)

9. Remove two screws for fixing spray holder, then take out the spray holder.

1

2

Screws

Part name: 1 – sprayer holder 2 – nut of sump assembly

10. Turn cover of water softener. Contrarotate nut of air breather. Contrarotate nut of siphon, then take out one way valve from siphon. Contrarotate nut of sump assembly.

1

2

3

4

Part name: 1 – nut of air breather 2 – nut of siphon

3 – nut of water softener 4 – nut of sump assembly

11. Take out door springs and connecting lines for connecting spring to door assembly.

12. Remove all screws for fixing right and left front chamber bracket. Take out the tank assembly, at the same time unfix the snap-fits of bottom board for fixing right and left front chamber bracket.

1

2

3 4

Snap-fits

Screws

Part name: 1 – springs 2 – connecting lines

3 – right front chamber bracket

4 – left front chamber bracket


Sump assembly

1

2

3

4

5

6

7

Part Name: 1 – motor pump assembly 2 – thermal resistor

3 – drain pump assembly 4 – sump 5 – check plate holder

6 – heater elements support assembly

7 – heater elements assembly




4. Remove tank assembly. (see tank assembly removal and installation)

5. Pull out all terminals and housings of sump assembly; include two terminals for connecting drain pump assembly, three locking terminals and one connector for connecting motor pump assembly, two terminals for connecting heater elements, two terminals for connecting heater elements support assembly. And unfix connector of thermal resistor. Remove nut and take out a tooth lock washer and one ring terminal of heater elements assembly.

Locking terminals

Terminals

Connector

Terminals

Ring

Terminal

Connector

Terminals

6. Remove one clamp for fixing connecting hose to check plate holder.

Clamp

7. Pull out hose for connecting water softener to sump assembly. And pull out pressure switch hose.

1

2

Part name: 1 – connecting hose (water softener)

2 – Pressure switch hose

8. Take up sump assembly, and pull out that from motor vibration-proof pad.

1

Part name: 1 – motor vibration-proof pad


Drain pump assembly

Removal and replacement

1. Take out sump assembly. (see sump assembly removal

and installation)

2. Remove all screws for fixing drain pump assembly. And contrarotate the drain pump assembly to take out that.


Motor pump assembly


1. Take out sump assembly. (see sump assembly removal

and installation)

2. Remove all screws for fixing sump pump assembly.

Screws

3. Replace a new motor pump assembly.


Heater elements assembly


1. Take out sump assembly. (see sump assembly

removal and installation)

2. Remove all screws for fixing heater elements assembly. Take out heater elements assembly and heater elements support assembly.

Screws

3. Remove all nuts for fixing heater elements assembly. Then take out two gaskets of heater elements assembly.

Nuts

Gaskets


Heater elements support assembly




2. Remove heater elements assembly. (see heater

elements assembly removal and replacement)

3. Take out gasket of heater elements support assembly.

Gasket


Thermal resistor




2. Turn the sump assembly, and remove all screws for fixing thermal resistor.

Screws


Check plate


1. Take out sump assembly. (see sump assembly removal and

installation)

2. Pull out check plate holder assembly.

3. Pull out check plate from check plate holder, and replace a new check plate.


Flowmeter

Flowmeter is an instrument for monitoring, measuring the rate of flow. Main board control inlet valve to be on / off according signal of flowmeter.





5. Take out plug housing for male terminal. Remove all clamps for fixing connecting hose to flowmeter.

Clamps

Plug housing


Inlet valve



3. Take out two corner boards, absorber sound,

backboard, hollow plate.

4. Remove tank assembly. (see tank assembly removal

and installation)

5. Remove two locking terminals for connecting inlet valve. Then take out Inlet valve block for inlet valve, and then take out inlet valve. Remove clamp for fixing connecting hose to inlet valve. control

1

Clamp

Locking terminals

Part name: 1 – Inlet valve block


Floater assembly

1

2

3

Part name: 1 – floater holder 2 – microswitch (floater assembly) 3 – floater





5. Take up the bottom board; remove two screws for fixing floater assembly.

Screws

6. Pull out all locking terminals for connecting Microswitch (floater assembly).


Microswitch (floater assembly)


1. Remove floater assembly. (see floater assembly


2. Pull out all locking terminals for connecting

Microswitch (floater assembly).

3. Remove one screw for fixing Microswitch (floater assembly).

4. Replace a new Microswitch (floater assembly)


Water softener

Water softener is an instrument for softening hard water in some location.

1

4

5

2

3

Terminals

Part name： 1 – air breather 2 – O ring 3 – gasket of water softener

4 – water softener 5 – connecting hose (water softener)





5. Pull out the air breather, take out two O rings

6. Take out gasket of water softener (2), and pull out connecting hose (water softener).

7. Pull out all terminals for connecting water softener.


Note : only use for some model have water softener.

Troubleshooting

SYMPTOM CHECK FOR THE FOLLOWING

3 in 1 lamp The water supply is turned off. twinkle

（ Dishwasher

Defective water fill valve.

Low water pressure. will not fill with water or will not fill properly.）

Obstructed water fills valve or hose.

Damaged or defective wiring.

Defective pressure switch for high water level safeguard.

Defective flowmeter.

REMEDY

Turn the water supply on.

Replace the water fill valve.

Minimum water pressure of 20 PSI.

Disassemble and clean the water fill valve and hose.

Repair the wiring.

Replace the pressure switch.

Dishwasher will not pump out.

Dishwasher runs but. will not heat.

Heavy water usage elsewhere in home.

Defective PCB assembly

Defective drain pump.

Obstructed drainhose



Low input voltage.

Defective Thermal resistor


Replace the flowmeter

Use dishwasher when water usage is at a minimum.

Replace the PCB assembly

Replace the drain pump. check the drainhose


Repair the wiring.

The lowest input voltage is 198V

Replace the Thermal resistor

Repair the wiring.

Too little water fill.

Defective micro-switch of heater elements support assembly.

Defective heater element.


See “Too little water fill.”

Replace the heater elements support assembly.

Replace the heater element.


Glass lamp Replace the micro-switch twinkle

（ overfall safeguard

Damaged or defective wiring. Repair the wiring. alarm） Defective PCB assembly Replace the PCB assembly

Water leaks from dishwasher. See “Water leaks from dishwasher”

Do not work The door not close well start


Dishwasher runs with door open.

Defective door switch contacts.

Defective door handle assembly.



Motor hums but will not start or run.

Defective motor bearings.

Defective motor capacitor.


Improper motor voltage.

Motor trips out

Defective door handle assembly.



Dishwasher not level.

Defective flowmeter.

Clogged filter assembly.

Water siphons out

Defective pressure switch. close the door

Replace the door switch.

Replace the door handle assembly.

Repair the wiring.


Level the dishwasher.

Replace the flowmeter

Clean the filter assembly.

Clean or Replace the One way valve

Replace the pressure switch.

Replace the door switch.

Replace the door handle assembly.

Repair the wiring.


Replace the motor.

Replace the motor capacitor.

Repair the wiring.

Replace the motor.

Defective motor capacitor.

Replace the motor.

Replace the motor capacitor. thermal overload protector

Repeated dishwasher

Defective motor bearings.


Replace the motor.


cycles.

Water remains in bottom

Spotting or filming on glasses

(reposition of food soil).

A small amount of water (in sump area) is normal.

This is necessary to keep the pump primed and is drained automatically at the beginning of each cycle.

Replace the drain pump. Defective drain pump

Defective Check plate

Defective One way valve

Clean or Replace the Check plate

Clean or Replace the One way valve

Detergent allowed to stand too long in the dispenser or excessive amounts of detergent are being used.

Instruct the customer on proper use of dishwasher detergent. Refer to the

Improper loading of dishes, pots, pans, and nesting of silverware. owner’s manual.

Noisy pump assembly.

Debris in bottom of tub sump area.

Pump parts were not properly installed.

Impellers are not properly shimmed or are rubbing.

Poor washability.

Clogged filter assembly.

Dishware stop the sprayer

Improper loading of dishes, pots, pans, and nesting of silverware.

Little detergent/rinse module

Select improper program

Defective detergent/rinse module

Defective spray arm.


Defective motor pump

Poor drying of dishes

Improper loading of dishes, pots, pans, and nesting of silverware.

Select improper program

Clean out the sump area.

Inspect the pump and correct and installation errors.

Use the shim guage furnished in the impeller seal kit. When the seal is properly shimmed the impellers will be in the correct operating position.

Clean the filter assembly. revolve the sprayer before wash.

Refer to the owners manual.

Replace the etergent/rinse module.

Check spray arm for proper rotation.

See “Too little water fill” symptom.

Replace the motor pump

Instruct the customer on proper loading of the dishwasher. Refer to the owners manual.

Water leaks from dishwasher.

Defective dispenser

Too much water fill.

Defective tub seal.

Defective softener gasket.

Defective drain pump

Dishwasher not level.

Replace the dispenser

See previous symptom.

Replace the tub seal.

Replace softener gasket.

Replace the drain pump

Level the dishwasher.

Soap suds leak from dishwasher. Refer to use and care manual.

Loose hose clamps.

Loose heater element.

Tighten or replace hose clamps.

Tighten heater element mounting nuts.

Defective sump seals. Replace the sump seals.

Motor and drain pump assembly not seated properly with sump.

Remount the motor and drain pump assembly. assembly seals.

Midea WQP6-3206B Service Guide

Technical Service Guide

WQP6-3206B

IMPORTANT SAFETY NOTICE

WARNING

RECONNECT ALL GROUNDING DEVICES

CONTENTS

Introduction

Specification

Control Panel Features

Component Locator Views

Front View

Interior View (with basket)

Interior View (With Basket Removed)

Back View

Dishwasher Components

Main control board

Outer Door

Front View (with outer door assembly removed)

Dispenser

Door Handle Assembly

Microswitch (door handle assembly)

Inner Door

Shell

Back View (with shell removed)

Operating board

Air Breather Assembly

Siphon

Pressure switch

Tank assembly

Sump assembly

Drain pump assembly

Motor pump assembly

Heater elements assembly

Heater elements support assembly

Thermal resistor

Check plate

Flowmeter

Inlet valve

Floater assembly

Microswitch (floater assembly)

Water softener

Troubleshooting

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