Electrolux 389EN Service Manual

 ELECTROLUX HOME PRODUCTS

ITALY S.p.A. Spares Operations Italy Corso Lino Zanussi, 30

I - 33080 PORCIA /PN (ITALY)

Fax +39 0434 394096

Edition: 2003-10

Publication

number

599 36 13-89

SERVICE MANUAL

DISHWASHERS

Dishwasher with

EDW1003 electronic

control system

(Functionalities)

“DIVA 45 cm”

Fully built-in

PNC 911 635 ...

Production:

ZM - Solaro (IT)

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CONTENTS

PURPOSE OF THIS MANUAL ..........................................................................................................5

2 PRECAUTIONS ................................................................................................................................. 5

3 GENERAL CHARACTERISTICS....................................................................................................... 5

4 CONTROL PANEL............................................................................................................................. 6

4.1 Control panel....................................................................................................................................... 6

4.1.1 ON/OFF button (S0)....................................................................................................................................6

4.1.2 Programme/Option buttons (S1-S6)............................................................................................................6

4.1.3 Programme indicator LEDs (LD1 - LD6) .....................................................................................................6

4.1.4 Indicator LEDs (LD7 - LD12).......................................................................................................................7

4.2 Washing programmes......................................................................................................................... 7

4.3 Options................................................................................................................................................ 7

4.3.1 “ 3 in 1 Tablet”.............................................................................................................................................7

4.3.2 Extra rinse (rinse +) ....................................................................................................................................7

4.3.3 “1/2 load”.....................................................................................................................................................8

4.3.4 “Sanitize”.....................................................................................................................................................8

4.3.5 Delayed start...............................................................................................................................................8

4.4 Modifying a programme ...................................................................................................................... 9

4.4.1 Cancelling a programme (reset)..................................................................................................................9

4.4.2 Modifying a programme ..............................................................................................................................9

4.4.3 Interruption of a programme (pause) ..........................................................................................................9

4.5 Power failure....................................................................................................................................... 9

4.6 Buzzer............................................................................................................................................... 10

4.6.1 Activating/disactivating the buzzer ............................................................................................................10

4.7 Sequence of operations.................................................................................................................... 11

5 STRUCTURAL CHARACTERISTICS.............................................................................................. 12

5.1 Structure ...........................................................................................................................................12

5.2 Hydraulic and functional characteristics ........................................................................................... 12

5.3 Hydraulic circuit ................................................................................................................................ 13

6 ELECTRICAL COMPONENTS AND THEIR FUNCTIONS ............................................................. 14

6.1 EDW1003 Electronic control system ................................................................................................ 14

6.1.1 Functions of the circuit board....................................................................................................................14

6.1.2 Memory in the control system ...................................................................................................................14

6.2 Specifications for actuators and sensors.......................................................................................... 15

6.2.1 Components..............................................................................................................................................15

6.2.2 Sensors.....................................................................................................................................................15

6.3 Power supply and programme selection ..........................................................................................16

6.3.1 “Beam on floor” function (certain models only) .........................................................................................16

6.4 Fill circuit ........................................................................................................................................... 17

6.4.1 Level and anti-overflow pressure switch ...................................................................................................17

6.4.2 Fill system.................................................................................................................................................17

6.4.3 Anti-flooding device...................................................................................................................................17

6.4.4 Intervention of the anti-overflow system....................................................................................................17

6.5 Control of water fill phase ................................................................................................................. 18

6.5.1 Static fill ....................................................................................................................................................18

6.5.2 Dynamic fill ...............................................................................................................................................18

6.5.3 Level stability control.................................................................................................................................18

6.6 Water fill time .................................................................................................................................... 18

6.6.1 Static fill time.............................................................................................................................................18

6.6.2 Dynamic fill time........................................................................................................................................18

6.6.3 Power supply interruption during water fill ................................................................................................18

6.7 Level stability during washing........................................................................................................... 19

6.8 Washing system ............................................................................................................................... 19

6.8.1 Control of the washing pump ....................................................................................................................19

6.9 Heating.............................................................................................................................................. 20

6.9.1 Integrated detergent dispenser .................................................................................................................20

6.10 Disactivating the rinse-aid function ...............................................................................................21

6.11 Drain .............................................................................................................................................. 21

6.12 Regeneration system ....................................................................................................................22

6.13 Resin washing ............................................................................................................................... 22

6.14 Regeneration levels ...................................................................................................................... 23

6.14.1 Setting the regeneration level ...................................................................................................................23

6.14.2 “Blending” function ....................................................................................................................................23

6.14.3 Table of regeneration values ....................................................................................................................24

7 Drying............................................................................................................................................... 24

7.1.1 “Turbo-dry” drying .....................................................................................................................................24

8 Automatic cycle................................................................................................................................ 25

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8.1

Turbidity sensor ................................................................................................................................ 25

8.1.1 Calculating the degree of soiling...............................................................................................................25

8.1.2 Determination of the load..........................................................................................................................25

8.2 Automatic Programme ...................................................................................................................... 25

9 Alarms.............................................................................................................................................. 26

9.1 Table of alarms ................................................................................................................................. 26

10 Diagnostics mode / Options............................................................................................................. 28

10.1 Accessing diagnostics mode......................................................................................................... 28

10.2 Reading the alarms and activating the individual components..................................................... 28

10.3 Cancelling alarm codes from memory / Testing the LEDs............................................................ 29

10.4 Functional testing cycle ................................................................................................................. 29

10.4.1 Selecting the cycle ....................................................................................................................................29

10.4.2 Cycle phases ............................................................................................................................................29

10.5 Options available to Service Engineers ........................................................................................30

10.5.1 Selecting the extra cold rinse option .........................................................................................................30

10.5.2 Disabling pulse washing ...........................................................................................................................30

10.6 Exiting diagnostics mode .............................................................................................................. 30

11 ELECTRICAL FUNCTIONS............................................................................................................. 31

11.1 Electrical circuit diagram ...............................................................................................................31

11.2 Basic circuit diagram ..................................................................................................................... 32

11.2.1 Key to circuit diagram ...............................................................................................................................32

11.3 Table of programmes .................................................................................................................... 33

11.4 Checking the efficiency of the components .................................................................................. 34

11.5 Measurement points on the board wiring connector ..................................................................... 34

12 QUICK GUIDE TO THE SPECIAL FUNCTIONS ............................................................................ 35

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1 PURPOSE OF THIS MANUAL

The purpose of this Service Manual is to provide Service Engineers, who already have the basic knowledge necessary to repair household dishwashers, with technical information regarding dishwashers featuring the EDW1003 electronic control system. These appliances are manufactured at Solaro (Italy). The EDW1003 control system consists of a main circuit board and a control/display board. Both boards are housed in a single plastic container. This system is used in fully built-in versions with “DIVA” 45 cm structures.

This Manual describes:

• General characteristics

• Control panel and programmes

• Technical characteristics

• Guide to diagnostics

For more detailed information regarding the hydraulic circuits and the structural characteristics of the appliances, refer to the Service Manual for presentation of the 45cm “DIVA” structure (publication number 599 36 09–90).

2 PRECAUTIONS

 Electrical appliances must be serviced only by qualified Service Engineers.  Always remove the plug from the power socket before touching internal

components.

3 GENERAL CHARACTERISTICS

Power supply B 230 V / 50 Hz (limits: 187−254 V) Total power absorption B 2300 W Mains water supply B Pressure Min. / Max. 5 − 80 N/cm Capacity B 8/9 place settings

Dimensions:

- width B 44.6 cm

- height B 81.8 -87.8 cm

- depth B 55.5 cm

Controls B Horizontal on upper edge of the door

- ON/OFF B Two-pole switch (separate from the electronic board)

- Selection of programmes/options B Button-actioned (min. 3, max. 6)

Washing system B Combined / Pulse Control of water level B Pressure switch + Software Water heating B Tube-enclosed heating element (2100 W) Temperature control B NTC temperature sensor Type of drying B Active / Turbo Safety devices / Alarms B Total protection (hydraulic + Software)

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4 CONTROL PANEL

4.1 Control panel

The configuration of the control panel depends on the following:

 Number of programme selection buttons (from a minimum of 3 to a maximum of 6)  Number of LEDs (max.12)

S0 ON/OFF button S1-S6 Programme/option selection buttons LD1-LD6 Programme/Option indicator LEDs LD7-LD12 Indicator LEDs (delayed start time - salt - rinse-aid - end of cycle)

4.1.1 ON/OFF button (S0)

The ON/OFF button is featured on all models in the range, and is used to switch the appliance on and off. Switching off does not cancel the programme being executed.

4.1.2 Programme/Option buttons (S1-S6)

These buttons are used to select the washing programme:

 Press one of the buttons to select a washing programme.  Within 3 seconds after selecting the programme, the user can enter the desired option(s) or select the

delayed-start function (if featured).

 A specific LED (LD1 - LD6) is associated with each button.  The dishwashers may have from a minimum of 3 to a maximum of 6 buttons.  The following options may be featured:

- Delayed-start (3/6/9 hours)

- Half-load

- 3 in 1 tablet

- Extra rinse

- Sanitize

 Buttons S1, S2, S3 are featured on all models; these are also used for certain Servicing functions.

The functions of the various buttons depend exclusively on the software configuration of each appliance. For more detailed information, refer to the table of programmes relative to the specific model.

4.1.3 Programme indicator LEDs (LD1 - LD6)

 When the appliance is switched on, all the programme LEDs (except 3/1, if disactivated) are lit to

indicate the programme selection phase.

 Press one of the buttons. The corresponding LED remains lit, and the other LEDs switch off. The LED

remains lit for the entire duration of the washing programme.

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4.1.4 Indicator LEDs (LD7 - LD12)

The indicator LEDs provide the user with the following information:

 End of cycle: this LED is featured on all models.  Salt: indicates that the salt reservoir is empty. If the level of regeneration is set to “1” (no regeneration),

this LED remains unlit at all times.

 Rinse-aid: indicates that the rinse-aid reservoir is empty.  Delay time: LEDs LD7, LD8, LD9 provide a sequential indication of the time to elapse before a delayed

start (3-6-9 hours)

The functions of the various LEDs depend on the software configuration of each appliance.

4.2 Washing programmes

The number and type of washing programmes depends on the configuration of the appliance (max. 6).

Possible options

Type

I2 I3

Auto

(*)models with turbidity meter only

Intensive (maximum speed)

Normal (maximum speed)

Delicate without pre-wash

Programme

Intensive short

Delicate

Normal 3 rinses Normal 3 rinses

without pre-wash

Energy label Axx

Energy label

Auto performance

Auto 50-65°C

Short

Soak

Short 30 min

Heat plates

Glassware

Pre-wash (ºC)

55 68 3 50 68 3

Wash (ºC)

68 2 55 2 55 2 68 3

68 3

60 max 2

65 max 2

50-68 2-3 --

50 2 --

-- -- -- ⊗ -- -- 12

65 max 1 --

-- 1 -- ⊗ -- -- 29

45 2 -- --

N. Rinses

⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗

⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗ ⊗

⊗ ⊗ ⊗ ⊗

1/2 load

Sanitize

⊗ ⊗ ⊗ ⊗ ⊗ ⊗

⊗ ⊗ ⊗

3 in 1

⊗ ⊗



Min. ~

Rinse +

116

85 96

95 86 99

171

150

90-110

4.3 Options

4.3.1 “ 3 in 1 Tablet”

This option can be selected by pressing the corresponding button, and remains in memory until the same button is pressed again. This option modifies the phases of the programme in order to optimize performance when “3 in 1” detergent tablets are used:  variation of the duration of the programme and the temperatures required to dissolve the detergent

tablets.

 reduction of water exchange (partial drain phases)  exclusion of introduction of rinse-aid  exclusion of regeneration / resin washing

4.3.2 Extra rinse (rinse +)

This option may be selected temporarily by pressing the button (if featured), or in “Service” mode. If this option is set by the service engineer, it remains in memory until disactivated (see relative section).  This option adds one cold rinse (with pulse washing) with a duration of about 5 minutes.

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4.3.3 “1/2 load”

The 1/2 load option optimizes the washing cycle when only a small load is placed in the appliance.

• 1/2 load button When this button is pressed, certain parameters of the selected washing cycle are modified:

 Exclusion of Pre-wash (if featured)  Reduction of the washing temperature  Reduction of the duration of the programme (up to 36 minutes)

• Automatic 1/2 load When this button is not featured on the control panel, certain programmes may feature automatic detection of the half load. This system measures variations in the temperature during the initial heating phase. The temperature and the duration of the wash are both reduced.

This option is not available in the following cycles: “Intensive”, “Short 30 minutes”, “Soak”, “Heating plates” and “Glassware”.

4.3.4 “Sanitize”

This is a special option used to sanitize the dishes/cutlery. However, it is NOT compatible with the “Glassware” programme.

 During the final rinse, the temperature is maintained at 68°C for 10 minutes.  If used together with the SOAK option, the system performs a special sanitizing programme which lasts

approximately 46 minutes (1 hot rinse followed by 10 minutes at a constant temperature of 68°C).

4.3.5 Delayed start

Proceed as follows to select the delayed-start time:

1. Press key S0 to switch on the appliance: LEDs LD1 - LD6 light.

2. Press a button to select the desired programme: the corresponding LED lights.

3. Press the button repeatedly to select the delayed-start time: LED LD6 corresponding to the option button

lights together with the LED showing the time selected (LD7, LD8, LD9:  3  6  9  0 hours).

4. Press the button once again to cancel the delayed-start time. LEDs LD6 - LD9 switch off.

5. The delayed-start countdown begins when the door is closed:

 When the countdown is at 9 hours, LED LD9 remains lit.  When the countdown reaches 6 hours, LED LD8 remains lit.  When the countdown reached 3 hours, LED LD7 remains lit.  When the countdown time has elapsed (0 hours), LEDs LD6 - LD7 switch off and the cycle starts.

In certain models, the LEDs may be configured differently.

The delayed-start countdown can also be selected as follows:

1. Press key S0 to switch on the appliance.

2. Press the button repeatedly to select the delayed-start time: LED LD6 corresponding to the option button

lights together with the LED showing the time selected ( 3  6  9  0 hours).

3. Press a button to select the desired programme: the corresponding LED lights.

4. The countdown starts when the door is closed.

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4.4 Modifying a programme

4.4.1 Cancelling a programme (reset)

To cancel a programme that has already started, proceed as follows:

1. Open the door carefully and press buttons S2 - S3 together for approximately 2 seconds: the LED

corresponding to the cycle being executed begins to flash.

2. After about two seconds, all the LEDs corresponding to the buttons (LD1 - LD6) light: the programme is

now cancelled and the appliance returns to pre-selection mode.

4.4.2 Modifying a programme

Until a cycle has actually started, the settings selected can be modified at any time by pressing the appropriate buttons. If the door has been closed, proceed as follows to modify the programme:

1. Carefully open the door and press the button corresponding to the new programme for about 6 seconds:

the LED for the current cycle begins to flash.

2. After about 6 seconds, the LED corresponding to the old programme switches off, and the LED for the

new programme lights. Any options that have been selected are cancelled, and must therefore be entered again.

3. Close the door to start the new cycle.

4.4.3 Interruption of a programme (pause)

Proceed as follows to interrupt a programme that has already started:

1. Carefully open the door and, if necessary, press S0 to switch the appliance off.

2. To re-start the cycle, press S0 again and re-close the door. The programme starts (after a brief delay)

from the point at which it was interrupted.

Important! If the appliance is switched off or if the door is opened for more than 30 seconds during the drying phase when the appliance is switched on again, it returns to programme selection mode.

, the cycle is considered to have been terminated after the regeneration phase;

4.5 Power failure

The Power Failure function maintains the information relative to the cycle status even in the even of a power outage; when the power supply is restored, the cycle resumes from the point at which it was interrupted. If the power failure occurs during the drying phase, the cycle is considered to have been terminated after the regeneration phase.

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4.6 Buzzer

The buzzer sounds to indicate the end of cycle and in the event of an alarm condition. The buzzer sounds three times at the end of the cycle, but switches off immediately if the door is opened.

If the user prefers to switch off the buzzer, it is necessary to press a combination of buttons

4.6.1 Activating/disactivating the buzzer

1. Cancel any cycles that have been selected

2. Press S0 to switch the appliance on  LEDs LD1 - LD6 must be lit

programme selection phase

3. Press buttons S2 and S3 at the same time until LEDs LD1, LD2 and LD3 begin to flash

4. Press button S3: LEDs LD1 and LD2 switch off, while LD3 continues to flash

 The end of cycle LED remains lit to indicate that the

buzzer has been activated

5. Press button S3 again to disactivate the buzzer

 The end of cycle LED switches off to indicate that

the buzzer has been disactivated

to indicate the

6. To store this operation in memory: press button S0 to switch the appliance off, or wait for 60 seconds (LD1 - LD6 light)

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4.7 Sequence of operations

1. Open the door to access the control panel

2. Press S0 to switch the appliance on  All the LEDs corresponding to the programme/

option buttons light

3. Press the button corresponding to the desired programme

 The corresponding LED remains lit, while the

remaining LEDs switch off

SELECTING THE CYCLE

4. If desired, select the delayed-start function or other options (if featured)

5. Close the door to start the cycle

 The settings entered can be modified before

closing the door

START

6. During the execution of the cycle, the LED remains lit (though it is not visible to the user)

7. To interrupt the current programme:

 Open the door and, if necessary, press S0 to

switch off the appliance

 To re-start the appliance, press S0 again and

re-close the door

8. To modify the current programme:

 Open the door and press the button for the new

programme for approximately 6 seconds.

 Close the door to start the new cycle

EXECUTION OF THE CYCLE

9. To cancel the current programme:

 Open the door and press buttons S2 and S3 at

the same time, holding down for about 2 seconds.

10. At the end of the programme:

 The buzzer sounds at intervals; if the door is

opened, the buzzer switches off immediately

 The END OF CYCLE LED lights; to switch off

the LED, open and re-close the door.

END

11. Press S0 to switch off the appliance.

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