Electrolux Diva EDW 2000 Service Manual
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Electrolux Diva EDW 2000 Service Manual

Electrolux Diva EDW 2000 Service Manual

With electronic control 60 cm
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 ELECTROLUX HOME PRODUCTS
ITALY S.p.A.
Spares Operations Italy
Corso Lino Zanussi, 30
I - 33080 PORCIA /PN (ITALY)
Fax +39 0434 394096
Edition: 2003-12
SOI/TD - PR
Publication no.
599 35 94-03
EN
1
SERVICE MANUAL
DISHWASHERS
DIVA
EDW 2000 - 60 cm
Dishwasher with
electronic control
(Functionality)
free- standing
911 917 ...
built-in
911 927 ...
Produced by:
ZM - Solaro (IT)
599 35 94-03

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Summary of Contents for Electrolux Diva EDW 2000

  • Page 1 SERVICE MANUAL DISHWASHERS DIVA EDW 2000 - 60 cm Dishwasher with  ELECTROLUX HOME PRODUCTS electronic control Publication no. ITALY S.p.A. Spares Operations Italy (Functionality) Corso Lino Zanussi, 30 I - 33080 PORCIA /PN (ITALY) 599 35 94-03 Fax +39 0434 394096 free- standing 911 917 …...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Purpose of this manual ........................... 4 GENERAL CHARACTERISTICS......................4 CONTROL PANEL AND PROGRAMMES ..................... 5 Control panel............................5 3.1.1 ON / OFF button (S0)..........................5 3.1.2 Programme buttons and options (S1-S9)....................6 3.1.3 LEDs for phases, options and warnings (LD7-LD20) ..................6 3.1.4 Display ................................6 Wash programmes ..........................
  • Page 3 5.14 Automatic cycle ..........................30 5.15 Turbidity sensor........................... 30 5.15.1 Detection of dirtiness ..........................30 5.15.2 Detection of load ............................30 5.16 Automatic Programme ........................30 A GUIDE TO THE DIAGNOSTIC SYSTEM..................31 Displaying alarms and enabling mechanical systems ..............31 Table of alarm codes ........................32 Cancelling alarms from memory / testing the LEDs .................

  • Page 4: Purpose Of This Manual

    1 Purpose of this manual The purpose of this manual is to provide service personnel (who already have the basic knowledge necessary for repairing dishwashers) with information on dishwashers equipped with the EDW2000 electronic control system, which are produced in the Solaro (MI - Italy) factory. The EDW2000 control system is composed of a main (input) board, a display (output/interface) board housed in the control panel, and a mother board housed in the lower part of the appliance.

  • Page 5: Control Panel And Programmes

    3 CONTROL PANEL AND PROGRAMMES 3.1 Control panel The configuration of the control panel may vary with: Type of circuit boards used Number of pushbuttons for selecting programmes/options Number of LEDs or backlit characters 3.1.1 ON / OFF button (S0) This button is installed on all EDW2000 units and is used to turn the appliance on and off.

  • Page 6: Programme Buttons And Options (S1-S9)

    3.1.2 Programme buttons and options (S1-S9) The functions and number of buttons depends exclusively on the software in the appliance, which can be equipped with a minimum of 3 and a maximum of 9 buttons. The system used for selecting the wash programmes also depends on the configuration of the model in question..

  • Page 7: Wash Programmes

    3.2 Wash programmes The number and types of wash programmes and options vary with the configuration of the model. Possible options Min. ~ Programme ♦ Intensive (maximum speed) ☺ ☺ ☺ ☺ ☺ 120’ ♦ Short intensive ☺ ☺ ☺ ☺ ☺ 88‘...

  • Page 8: Sanitising

    This option is not available in the “Short Intensive”, “Intensive Maximum Speed”, “Short”, “Short 30 min.”, “Soak”, “Dish Heating” and “Crystal Ware” cycles. 3.3.4 Sanitising This special option sanitises the dishes and is not compatible with the “Crystal Ware” cycle. During the final hot rinse, a temperature of 68ºC is maintained for 10 minutes If selected during the Soak cycle, a special “sanitising”...
  • Page 9 Every time button S7 is pressed, the delayed start time increases by 1 hour up to a maximum of 19 hours: When the selection exceeds 19, the system begins the count again starting from 0 4. 3 seconds after the last press of button S7, the time set on the display is stored and the countdown to start begins LED LD0 is lit The LED for the selected programme is lit...

  • Page 10: Buzzer (Installed On Certain Models, Only)

    3. Press the button for the desired programme: LED LD0 is lit The LED for the selected programme lights up to show that the selection has been made The display lights up and the time remaining (from beginning to end of cycle) flashes LED LD7 is lit LED LD10 lights up LEDs LD11, LD12, LD13, LD14 light up to indicate the phases that make up the programme...

  • Page 11: Selecting A Programme

    3.5 Selecting a programme With the dishwasher OFF: 1. Turn the appliance on by pressing button S0 LED LD0 lights up The appliance is set to the selection mode All the programme buttons and options are now available After the desired programme is selected, options can still be chosen as long as they are compatible with the selected programme Delayed start can be selected;...

  • Page 12: Cycle Execution

    3.6.2 Cycle execution LED LD0 is lit The LED for the selected programme is lit LED LD10 stays lit for the duration of the cycle The display shows the minutes of wash time remaining The time until the end of the cycle is updated at every new phase in the programme When the system moves from one phase to another, the time remaining until the end of the cycle may be lowered more than the actual time elapsed When the system moves from one phase to another, the time remaining until the end of the cycle...

  • Page 13: Changing A Programme

    3.7.2 Changing a programme 1. If the programme has been selected but has not yet started: LED LD0 is lit The LED for the cycle in progress is lit LED LD10 for the time remaining until end of cycle is lit The display shows time remaining until the end of the cycle All the LEDs that indicate the phases in the programme are lit 2.

  • Page 14: Interrupting A Programme

    1. If the cycle is running without alarms: LED LD0 is lit The LED for the selected cycle is lit The LED that indicates the phase in progress is lit LED LD10 for the time until the end of the cycle is lit The display shows (but does not flash) the time until the end of the cycle 2.
  • Page 15 Opening the door If the appliance is in the selection mode: All the indicators on the control panel stay lit when the door is opened Power is supplied to the circuit boards for the entire time the appliance is on If the appliance is in the washing cycle: When the door is opened (carefully), all the indicators on the control panel stay lit for the entire time that the washer is on...

  • Page 16: Sequence Of Operations

    3.8 Sequence of operations 1. Close the door 2. Press button S0 to turn the appliance on 3. Select the desired programme 4. Within 3 seconds, select the delayed start time (if desired) or the desired option (if permitted in the programme selected) 5.

  • Page 17: Build Characteristics

    4 BUILD CHARACTERISTICS 4.1 Structure The appliance can be subdivided into four main assemblies: - BASE AREA – DOOR AREA – TUB AREA – WATER UNIT The machine is housed in an assembly of individual removable parts composed of a front panel at the bottom and two side panels.

  • Page 18: Water Circuit

    4.3 Water circuit LEGEND 1 - Fill hose 11 - Anti-overflow pressure switch 2 - Fill hose with "Acquacontrol" device 12 - Sump assembly 3 - Fill solenoid 13 - Wash pump 4 - Regeneration solenoid 14 - Heating element (enclosed in tube) 5 - Air-Break 15 - Drain pump 6 - Steam condenser...

  • Page 19: Electrical Components And Functions

    5 ELECTRICAL COMPONENTS AND FUNCTIONS 5.1 EDW2000 electronic control system The EDW2000 electronic control system is composed of a main board (“input board”, see fig. 1) and a display board (“output board”, fig. 2) that are housed in the control panel, and a “mother board” (fig. 3), which is located at the bottom of the appliance (toward the front).

  • Page 20: Specifications Of Actuators And Sensors

    5.2 Specifications of actuators and sensors 5.2.1 Components TYPE OF COMPONENT POWER RATING TYPE OF CONTROL Wash pump Max 250W Triac Drain pump Max 100W Triac Heating element Max 2100W Relay Water fill solenoid Max 10W Triac Regeneration solenoid Max 10W Triac Detergent and rinse-aid solenoid Max 10W...

  • Page 21: Power Feed And Selection Of Programmes

    5.3 Power feed and selection of programmes The main board is powered up when power button (PU) contacts 1-5 and 2-4 are closed. The connectors involved are A2 (neutral) and B1 (line). The control/display board (user interface) is powered by 5V supplied by the main board, so programmes can be selected when the main board is turned on.

  • Page 22: Operation Of The Anti-Overflow Device

    5.4.4 Operation of the anti-overflow device If the pressure switch (PA) on the anti- overflow system is activated, the closed “FULL” contact (1-3) starts the drain pump (PS), which operates until the contact switches to “EMPTY” (1-2). If the door is opened or the machine is shut off, the drain pump shuts off.

  • Page 23: Water Filling Time

    5.6 Water filling time The maximum time that the fill solenoid stays open is subdivided over various sub-phases in the fill cycle. 5.6.1 Static filling time S.T. = max 90 seconds: this is the maximum time allowed for the pressure switch to switch to FULL.

  • Page 24: Control Of Wash Pump

    To optimise washing performance, this appliance offers two different washing systems: «ctrl» Washing at a constant motor speed of 2800 RPM.(max. motor speed). «PW» Variable-speed (pulse) washing at 1600 > 2800 RPM. This system is controlled by the electronic control system, which sequentially activates the washing motor at two different speeds (a minimum and maximum speed) for brief intervals.

  • Page 25: Heating

    5.9 Heating The heating element, which is enclosed in a tube, is used to heat the wash water (it does not operate during drying). The element is installed on the intake to the wash pump and is connected to the tube that feeds the upper spray arm.

  • Page 26: Draining

    5.10 Draining The drain pump (PS) is powered by triac TY3 (connector C1) through the contacts on the start button (PU) and the door switch (IP). At the end of the drain phase, a check is made to verify whether the contact on the pressure switch is open (in the EMPTY position).

  • Page 27: Regeneration System

    5.11 Regeneration system Regeneration of the water softening system, which takes around 4 min, is usually performed at the start of the drying phase. Every time regeneration is performed (with activation of regeneration solenoid 4), the accumulation chamber is completely emptied of its contents (about 230 cc of water). Regeneration is not carried out at every washing cycle, but at intervals that are determined by the programmed regeneration level: If regeneration level [1] is selected (no regeneration), regeneration is never performed and the...

  • Page 28: Blending" Function

    5.12.1 “Blending” function This function is performed inside the fill tank during the water fill phase. Depending on the position of the selector, softened water is automatically blended with the unsoftened water present in the appliance. The softened water is introduced from the softening system into the sump, while the unsoftened water flows through an open by-pass valve directly through the steam venting ring.

  • Page 29: Turbo-Dry" Drying

    5.13.1 ”Turbo-dry” drying On some models, a forced-air drying system is used. Steam is drawn in by a fan inside the upper duct and then ducted towards the condenser in the fill tank, from where it returns to the tub via the steam venting ring. The fan motor (MV) is powered by triac TY6 (connector D3 on the main board) through the start switch (PU) and the door switch (IP).

  • Page 30: Automatic Cycle

    5.14 Automatic cycle 5.15 Turbidity sensor Some models fitted with a turbidity sensor can be equipped with a special “Automatic” programme that optimises the cycle to compensate for the quantity of dishes loaded and the amount of dirt on them. The sensor is located on the outside of the sump and directly contacts the water.

  • Page 31: Guide To The Diagnostic System

    6 A GUIDE TO THE DIAGNOSTIC SYSTEM A single procedure is used to access the diagnostic system, also known as the Service mode. Once this mode is accessed, it is possible to read / cancel alarms, check the various components in the appliance for proper operation, start a diagnostic cycle and select options that are only available to service personnel.

  • Page 32: Table Of Alarm Codes

    6.2 Table of alarm codes When an abnormal situation occurs that may interfere with machine functioning, the main board activates a safety system which in most cases interrupts the washing cycle. The last three alarm situations are stored in memory. Using a special procedure, service personnel can display all the alarms stored in memory. The user is only shown four of the alarms in progress.
  • Page 33 Type of Shown to Display Description of ALARM Status of machine Possible causes alarm user? The programme is fully executed Faulty NTC sensor; Short circuit / open circuit in Short circuited or open NTC sensor without heating (and with poor wiring;...

  • Page 34: Cancelling Alarms From Memory / Testing The Leds

    6.3 Cancelling alarms from memory / testing the LEDs Every alarm should be cancelled after it has been read and after the appliance has been repaired, in order to know whether the alarm has occurred again when the next diagnostic test is run. 1.

  • Page 35: Setting The Regeneration Level

    7.2 Setting the regeneration level The count for “as needed” execution of the regeneration cycle is made by the electronic control system based on the duration of the fill phases and thus on the quantity of water loaded (and not on the number of cycles executed).

  • Page 36: Rinse-Aid Dispensing

    7.3 Rinse-aid dispensing Rinse-aid dispensing can be disabled by the user by pressing a combination of buttons. The rinse-aid LED (if present) also shuts off: 1. Turn on the appliance by pressing the S0 button LED LD0 lights up The appliance is automatically set to the selection mode 2.

  • Page 37: Options That Can Be Selected By Service Personnel

    8 Options that can be selected by service personnel In certain cases when the user is not satisfied with washing performance, service personnel can use a special procedure to select two supplementary options that improve performance: • Extra rinse (cold) •...

  • Page 38: Functional Test Cycle

    8.2 Functional test cycle The functional test cycle is a washing programme for use by service personnel only. It can be used to test all the functions in a traditional washing cycle. In effect, a normal cycle is simulated. 8.2.1 Executing the test cycle 1.

  • Page 39: Pulse Washing

    8.3 Pulse washing Some programmes use a pulse washing (PW) system. The following procedure can be used to modify this system by programming continuous washing «Ctrl» in all cycles where «PW» pulse washing is the default. This modification also enhances washing action in delicate programmes. 1.

  • Page 40: Electrical Functions

    9 ELECTRICAL FUNCTIONS 9.1 Circuit diagram SOI/TD - PR 599 35 94-03...

  • Page 41: Basic Circuit Diagram

    9.2 Basic circuit diagram 9.2.1 Button to electrical diagrams CO = Capacitor PA = Anti-overflow level TAC/T = Tachometric MR = Terminal block AR = Orange NE = Black DD = Detergent/rinse-aid switch generator MV = Fan motor BI = White RO = Pink dispenser RR = Heating element...

  • Page 42: Table Of Programmes

    9.3 Table of programmes Extra Programmes Options Prewash Wash Rinse Dry. rinse rinse Programme name (∆T) (∆T) (∆T) ∆T 2x3’ 5’ Intensive (max speed) Y Y Y Y Y ∆T +10' ctrl ∆T +5' ctrl ∆T ctrl (∆T) 69°C ctrl 24’...

  • Page 43: Checking Components For Proper Operation

    9.4 Checking components for proper operation To make it easier to check components, a TEST PROCEDURE has been created which indicates the points where the tester probes should be applied and the correct theoretical value for each component. Remove the door and disconnect all the connectors from the main board. Connect the probes of the tester to the appropriate points on the connector.

  • Page 45: Quick Guide To Special Functions

    10 A QUICK GUIDE TO SPECIAL FUNCTIONS The table below contains a brief description of the functions available to the user and to service personnel. Function Method of selection Method of activation Short description / Comments Buttons LED(s) Buttons Display (description on page 24 / section 6.14).

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