Table of Contents
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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: 2005-02
SOI/TD 2005-2 PR
Publication no.
599 36 83-66
EN
1
/26
SERVICE MANUAL
DISHWASHERS
Dishwasher with
electronic control
EDW 503
(Functionalities)
"DIVA" 45-60-BIG
"totally integrated"
911639... 911939...
911689... 911989...
Production:
ZM - Solaro (IT)
599 36 83-66
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Table of Contents
Related Manuals for Electrolux DIVA 45-60-BIG
Summary of Contents for Electrolux DIVA 45-60-BIG
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Page 1: Electronic Control
SERVICE MANUAL DISHWASHERS Dishwasher with electronic control EDW 503 ELECTROLUX HOME PRODUCTS Publication no. (Functionalities) ITALY S.p.A. Spares Operations Italy “DIVA” 45-60-BIG Corso Lino Zanussi, 30 I - 33080 PORCIA /PN (ITALY) 599 36 83-66 “totally integrated” Fax +39 0434 394096 911639…... - Page 2 SOI/TD 2005-2 PR 599 36 83-66...
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Page 3: Table Of Contents
CONTENTS 1 Purpose of this manual ..........................5 2 PRECAUTIONS ............................5 3 GENERAL CHARACTERISTICS......................... 5 4 CONTROL PANEL............................6 On/Off button (S0)..........................6 Option selection button (S1) ......................6 Programme selection button (S2) ...................... 6 Options............................... 7 4.4.1 “1/2 load”..............................7 4.4.2 Delayed start...............................7 Cancelling a programme........................ - Page 4 14 CHECKING THE EFFICIENCY OF THE COMPONENTS ................ 25 14.1 Measurement points on the board wiring connectors..............25 15 QUICK GUIDE TO THE SPECIAL FUNCTIONS..................26 SOI/TD 2005-2 PR 599 36 83-66...
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Page 5: 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 EDW503 electronic control system, which are produced in the Solaro (MI - Italy) factory. The EDW503 control system consists of a main circuit board and a control/display board. -
Page 6: Control Panel
4 CONTROL PANEL 60 cm 45 cm LD 7-8-9 [S0] - On/Off button (always featured) [S1] - Option selection button (only on some models) [S2] - Programme selection button (sequence) [LD1] - Option Led activated (only on some models) [LD2]- … - [LD6] – Washing programme LEDs [LD7] …... -
Page 7: Options
4.4 Options 4.4.1 “1/2 load” The 1/2 load option optimizes the washing cycle when only a small load is placed in the appliance. 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 4.4.2... -
Page 8: Sequence Of Operation
5 SEQUENCE OF OPERATION 1. Switch on the appliance with button S0 the “End of cycle” LED flashes every 2sec for 0.5sec. eventually, if featured, the Salt/Rinse aid LEDs light up. 2. Select the delayed start or the desired option (if featured) pressing button S1. the LED LD1 lights up. -
Page 9: Hydraulic Circuit
6 HYDRAULIC CIRCUIT 1 - Fill hose Level pressure switch 10 - 2 - Fill hose with Acquacontrol 11 - Anti-overflow pressure switch 3 - Fill solenoid 12 - Sump assembly 4 - Regeneration solenoid 13 - Wash pump 5 - Air-Break 14 - Tube-enclosed heating element 6 - Steam condenser 15 - Drain pump... -
Page 10: Electrical Components And Functions
ELECTRICAL COMPONENTS AND FUNCTIONS 7.1 EDW503 Electronic control system The EDW503 control system consists of a main circuit board and a control/display board. Both boards are housed in a plastic container (fig. 1). The On/Off function is performed by the button S0. fig.1 7.1.1 Functions of the circuit board... -
Page 11: Memory In The Control System
7.1.2 Memory in the control system µP Power Fail and machine status Asynchronous Configuration of EEPROM Synchronous external serial the appliance (external internal serial port to the µP) Description of the cycle The main circuit board features an EEPROM memory (external to the microprocessor) which stores in memory data relative to the configuration, description of the cycle, cycle status in case of a power failure, and any alarm conditions. -
Page 12: Power Supply And Programme Selection
7.3 Power supply and programme selection The main board is powered by the closure of contacts. The connectors used are B2 (neutral) and B1 (line). The control/display board (user interface) is powered at 220V by the main board. When the door is closed, the main board detects the closure of the contacts of the switch (IP) across connectors C1-C3 and starts the washing programme. -
Page 13: Water Fill Time
7.6 Water fill time The opening of the solenoid valve has a pre-set overall duration, which is subdivided into the various sub- phases of the fill: 7.6.1 Static fill time T.S. = max 90 seconds: This is the maximum time within which the pressure switch must switch to FULL. If the FULL signal is not received from the pressure switch within this time, the electronic control system interrupts the washing cycle and the appliance enters alarm condition [1 0]. -
Page 14: Integrated Detergent Dispenser
a thermostat with a thermal fuse (206ºC) The temperature of the water is controlled by the main circuit board via an NTC sensor (ST) which is connected to connectors H1-H3. 7.10 Integrated detergent dispenser The detergent dispenser is a plastic container consisting of two separate sections. -
Page 15: Regeneration System
7.12 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 controlled by the electronic control system “Ad Hoc”, i.e. -
Page 16: Drying
8 DRYING In these dishwashers, the dishes are dried by means of a steam condensation process. The drying system is based on the circulation of the hot air produced during the hot rinse, in which the steam circulates inside the condenser of the fill tank. The steam (humid hot air) produced during the hot rinse, enters from below through the steam venting grille and circulates slowly inside the chamber of the fill tank where it condensates and then exits through the upper part. -
Page 17: Alarms
9 ALARMS 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 18 No. flashes Displayed Type of of end-of- to the Description of the alarm condition Machine status Possible causes alarm cycle LED user and “beeps” Heating element faulty; intervention of safety Heating Time-out The programme continues to the thermostats (open); wiring faulty; NTC sensor (poor (the check takes place every 3 minutes: end without heating (the washing thermal contact);...
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Page 19: User Mode
10 USER MODE With this procedure it is possible to: • Modify the regeneration level selection (depending on the water hardness) • Activate or deactivate the buzzer signalling. 10.1 Regeneration selection 1. Press button S0 to switch on the dishwasher. cancel any selected cycles pressing button S2 for at least 3sec. -
Page 20: Service Mode
11 SERVICE MODE With this procedure it is possible to access the Service Diagnostics System. To activate the function: 1. Press and hold down button S2. 2. Press button S0 to switch the appliance on LED L2 flashes. LEDs L3 and L4 light up. Once this mode is accessed, it is possible to: •... -
Page 21: Functional Testing Cycle
11.3 Functional testing cycle This is an abbreviated washing programme (50 min) which allows the Service Engineer to test all the functions that comprise a traditional washing cycle; in effect, the system simulates a normal cycle. 11.3.1 Selecting the cycle To activate the function, after accessing the diagnostics mode: 1. -
Page 22: Electrical Functions
12 ELECTRICAL FUNCTIONS 12.1 Electrical circuit diagram SOI/TD 2005-2 PR 22/26 599 36 83-66... -
Page 23: Basic Circuit Diagram
12.2 Basic circuit diagram 12.2.1 Key to circuit diagram CO = Capacitor PA = Anti-overflow pressure TAC/T = Tachometric generator AR = Orange MR = General terminal block NE = Black DD = Detergent/ Rinse-aid switch TS = Safety thermostat BI = White MV = Fan motor RO = Pink... -
Page 24: Table Of Programmes
13 TABLE OF PROGRAMMES The table below lists the phases of the programmes for this type of appliance. As these can be configured differently, refer to the relative documentation for the specific cycles available for each model. Programmes Pre-wash Wash Cold Rinse Cold Rinse Hot rinse... -
Page 25: Checking The Efficiency Of The Components
14 CHECKING THE EFFICIENCY OF THE COMPONENTS In order to facilitate the control procedure for the components to be tested, a TEST PROCEDURE has been created which indicates the point to which the probes of the tester should be applied and the correct theoretical value for each component tested. -
Page 26: Quick Guide To The Special Functions
15 QUICK GUIDE TO THE SPECIAL FUNCTIONS The table below briefly describes how each of the special functions available to the user and to the Service Engineer can be used: Starting the Displaying of the Function Activation of the function function function Short description / Notes...