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SERVICE MANUAL
WASHING
Washing machines with
electronic control system
© ELECTROLUX HOME PRODUCTS
EWM3500
ITALY S.p.A.
Publication no.
Spares Operations Italy
Technical and functional
Corso Lino Zanussi, 30
characteristics
I - 33080 PORCIA /PN
599 38 61-92
Fax +39 0434 394096
EN
STYLING: TC1
With cabinet
Edition: 2007-02-13
ICON
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Summary of Contents for Electrolux EWM3500
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Page 1: Service Manual
SERVICE MANUAL WASHING Washing machines with electronic control system © ELECTROLUX HOME PRODUCTS EWM3500 ITALY S.p.A. Publication no. Spares Operations Italy Technical and functional Corso Lino Zanussi, 30 characteristics I - 33080 PORCIA /PN 599 38 61-92 Fax +39 0434 394096... - Page 2 2/66 SOI/DT 2007-02 dmm 599 38 61-92...
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Page 3: Table Of Contents
CONTENTS Purpose of this manual ............................5 PRECAUTIONS ...............................5 During the delivery............................6 During the reparation ..........................6 TC1 ..................................7 GENERAL CHARACTERISTICS......................7 CONTROL PANEL ...........................8 3.2.1 Styling TC1 ............................8 Summary table of the main areas and their contents ..................9 4.1.1 First switching on..........................10 Configuration of control panel.........................11 4.2.1 Programme selector (S1) ........................11... - Page 4 9.2.2.1 Operating principle ........................49 9.2.2.2 Conditions required for opening the door.................49 9.2.2.3 Automatic unlock ........................49 Water fill system .............................50 Analogue pressure switch of water level control in the tub ..............50 Drain pump .............................51 Recirculation pump (if featured)......................51 Heating..............................52 Temperature sensor ..........................52 Three-phase asynchronous motor......................53 9.9.1 Power supply to motor........................53...
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Page 5: Purpose Of This Manual
1 Purpose of this manual The purpose of this manual is to provide service engineers who are already familiar with the repair procedures for traditional washing machines with information regarding appliances fitted with the ENV06 electronic control system and produced in Porcia (Italy). The characteristic of the ENV06 electronic control system is to use only an electronic pressure switch to check the various water levels in the tub (with the elimination of the mechanical pressure switches: anti-overflow, anti- boiling, 1st-2nd level), and a new heater with two thermal fuses which interrupt if the temperature degree... -
Page 6: During The Delivery
During the delivery NEVER MOVE the appliance inclining it on the front side During the reparation NEVER LAY DOWN THE APPLIANCE On the front side On the right side IT IS POSSIBLE TO LAY DOWN THE APPLIANCE On the left side On the rear side 6/66 SOI/DT 2007-02 dmm... -
Page 7: Tc1
3 TC1 GENERAL CHARACTERISTICS The ENV060 electronic control system consists of two electronic boards. One integrates the power and control functions and the selector, the other the display function, where also the LCD display is connected. The PCB is mounted on a casing fitted to the control panel. -
Page 8: Control Panel
CONTROL PANEL 3.2.1 Styling TC1 • max. 8 buttons • 15 or 21-position programme selector • LEDs 2 • LCD display • Disposition of LEDs and buttons 8/66 SOI/DT 2007-02 dmm 599 38 61-92... -
Page 9: Summary Table Of The Main Areas And Their Contents
4 Summary table of the main areas and their contents LANGUAGE SETTING LOGO TIME SETTING MAIN INTERFACE CYCLE DURATION SELECTION TEMPERATURE SPIN OPTION PROGRAMME SELECTOR SELECTION SELECTION SELECTION INTENSIVE NORMAL COTTON 95° 1800 DAILY DELICATES 60° 1600 LIGHT SYNTHETICS 50° 1400 QUICK WOOL... -
Page 10: First Switching On
4.1.1 First switching on When the appliance is switched on for the first time the LCD display shows a logo (one of the various featured) as represented in figure and a musical introduction. Pushing the 3 or 4 buttons it is possible to choose the appropriate language, between a list of 25 languages. -
Page 11: Configuration Of Control Panel
Configuration of control panel The washing programmes, the functions of the selector knob and the various pushbuttons vary according to the model, since these are determined by the configuration of the appliance. 4.2.1 Programme selector (S1) The selector features 15-21 positions and incorporates the ON/OFF switch. -
Page 12: Buttons And Lcd
If they do not need to be modified, just push the START/PAUSE (6) button to start the washing programme. If the basic settings do not satisfy the needs, pushing the relative buttons in sequence it is possible to modify the wash cycle temperature, the spin speed and to choose the various options to combine with the programme. 4.2.2 BUTTONS AND LCD ♦... - Page 13 After 2 seconds the writing changes to “PUSH OK”; pushing button 5 it is possible to change the option state from active to inactive or vice versa. Once the options have been chosen to close the expanded area just push a button (for ex. temperature, spin, etc.) or wait some seconds, the main screen will be displayed with the selected options.
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Page 14: Time Driven
4.2.3 Time DRIVEN The “Time driven” has the function to modify the programme settings according to the type of dirt so the wash time can be reduced or increased. Displaying the dirt level through an icon represented by a shirt and the time through the four digits positioned on the right side of the LCD display, this variation can be modified with buttons 7 and 8 positioned besides the display. -
Page 15: Washing Phases
The levels are represented in the following table: COTTONS SYNTHETICS DELICATES INTENSIVE --------------- --------------- NORMAL (basic programme) NORMAL (basic programme) NORMAL (basic programme) DAILY DAILY DAILY LIGHT LIGHT LIGHT QUICK --------------- --------------- SUPER QUICK SUPER QUICK SUPER QUICK 4.2.4 Washing phases The washing cycle consists of six phases: water fill, washing, rinses, drain, spin and end of cycle. -
Page 16: Control Of The Options Set During The Cycle
4.2.5 Control of the options set during the cycle During the cycle the user can check the settings pushing a button: Temperature (1), Spin (2), Option (4-5) and OK (5). The main screen with all the indications appears. After five seconds the display returns to the previous screen. During the washing cycle, for many factors (drain filter dirty, etc.) the duration of the programme could slightly vary, thus causing the changing of the time to end proposed at the beginning of the cycle. -
Page 17: Stop Or Cancelation Of A Programme
4.2.7 Stop or cancelation of a programme When the washing programme has already begun. The user can stop it or cancel it by turning the programme selector to position 0 (zero, appliance off). When the user switches the appliance on again, s/he will be required to confirm the cancellation or to continue the programme. -
Page 18: Child Lock
4.2.9 Child lock Push buttons 3 or 4, scroll down the menu till: “CHILD LOCK” Wait two seconds and the writing: “PUSH OK” button 5 appears. After activating the child lock the screen changes to inform the user how to unlock the appliance at the end of the cycle (push simultaneously buttons 3 and 4 for five seconds). -
Page 19: Memory
4.2.10 Memory Some positions of the programme selector are dedicated to the memorization of washing cycles that the user can personalize, so as to avoid repeating the modifications to a programme, for ex. to the temperature, the spin speed and to the options. If the appliance is new the memories are empty, so the user needs to define them. -
Page 20: Wash Guide
4.2.11 Wash Guide Here the user can search for information about: the best programme to choose, the ideal cycle temperature, the optimal spin and the various options to combine, to obtain the best from the washing cycle. The guide to the washing is inside the option menu. Push buttons 3 or 4 and scroll down the menu till: “WASH GUIDE”... -
Page 21: Spin Guide
4.2.11.2 Spin guide Here the user can search for information about the different spin speeds for the clothes, so as to choose the best one. Push buttons 3 or 4 and scroll down the menu till: “WASH GUIDE” Wait two seconds the writing changes to: “PUSH OK”... -
Page 22: Options Guide
4.2.11.3 Options guide Here the user can search for information about the available options to choose according to the clothes to be washed, so as to obtain the best result from their appliance. Push buttons 3 or 4 and scroll down the menu till: “WASH GUIDE”... -
Page 23: Stain Guide
4.2.11.4 Stain guide Here the user can search for information about how to remove heavy soil from different type of fabrics. Push buttons 3 or 4 and scroll down the menu till: “WASH GUIDE” Wait two seconds the writing changes to: “PUSH OK”... -
Page 24: Demo
4.2.11.5 Demo A special cycle has been created for demonstration of the operation of these appliances in retail outlets without connecting the appliance to the water supply. In this way, the salesman can select any programme; after starting the cycle by pressing START, the appliance will perform certain phases only, and will skip those which cannot be performed (water fill, drain, heating). -
Page 25: Settings
4.2.12 Settings The setting menu is inside the option menu. Push buttons 3 or 4 and scroll down the menu till: “SETTINGS” Wait two seconds the writing changes to: “PUSH OK” button 5. 4.2.12.1 Language “LANGUAGE” appears on the display. Push button OK (5). -
Page 26: Volume
4.2.12.2 Volume Push button 3 or 4 and scroll down the menu till: “SETTINGS” Wait two seconds the writing changes to: “PUSH OK” button 5. Push button 3 or 4 and scroll down the menu till: “VOLUME” Push button OK (5). The digit under the loudspeaker symbol starts to flash. -
Page 27: Time
4.2.12.3 Time Push button 3 or 4 and scroll down the menu till: “SETTINGS” Wait two seconds the writing changes to: “PUSH OK” button 5. Push button 3 or 4 and scroll down the menu till: “TIME” Push button OK (5). The digits under the clock symbol start to flash. -
Page 28: Luminosity
4.2.12.4 Luminosity Push button 3 or 4 and scroll down the menu till: “SETTINGS” Wait two seconds the writing changes to: “PUSH OK” button 5. Push button 3 or 4 and scroll down the menu till: “LUMINOSITY’” Push button OK (5). The digit under the sun symbol starts to flash. -
Page 29: Contrast
4.2.12.5 Contrast Push button 3 or 4 and scroll down the menu till: “SETTINGS” Wait two seconds the writing changes to: “PUSH OK” button 5. Push button 3 or 4 and scroll down the menu till: “CONTRAST” Push button OK (5). The digit under the symbol starts to flash. -
Page 30: Resetting The Settings
4.2.12.6 Resetting the settings This function allows the user to reset the basic settings set by the factory for: VOLUME, CONTRAST, LUMINOSITY and the configuration of the CHILD LOCK. Push button 3 or 4 and scroll down the menu till: “SETTINGS”... -
Page 31: Delayed Start
4.2.12.7 Delayed start To modify the time to end of the cycle indicated in the right lower side it is necessary: Push buttons 3 or 4 and scroll down the menu till: “END TIME”. Push OK button 5 the four digits which indicate the time start to flash. -
Page 32: Diagnostic System
5 DIAGNOSTIC SYSTEM Access to diagnostic mode 1. Switch off the appliance. 2. Press and hold down START/PAUSE button and the nearest OK button (as represented in figure). 3. Holding down both buttons, switch the appliance on by turning the programme selector by one position clockwise. -
Page 33: Diagnostic Phases
Diagnostic phases Irrespective of the type of PCB and the configuration of the programme selector it is possible, after entering diagnostic mode, to perform diagnostics on the operation of the various components and to read the alarms by turning the programme selector clockwise. All the alarms are enabled during the diagnostic cycle. -
Page 34: Analysis Of The Lcd Display During The Diagnostic Cycle
5.3.1 Analysis of the LCD display during the diagnostic cycle In position 1 the LCD display is displayed through the chessboard lighting (with different dimensions) of all the display points. Every time that during this test a button is pushed the test is interrupted and in the bottom centre the button codification in shown. -
Page 35: Alarms
6 ALARMS Displaying the alarms to the user The alarms are displayed by the red LED of the START/PAUSE button flashing and simultaneously through the LCD. The alarms displayed to the user are listed below: E10 - Water fill difficulty (closed tap) E20 - Drain difficulty (dirty filter) E40 –... -
Page 36: Reading The Alarm Codes
The alarms are enabled during the execution of the washing programme, with the exception of alarms associated with configuration and the power supply (voltage/frequency), which are also displayed during the programme selection phase. The door can normally be opened (except where specified) when an alarm condition has occurred on condition that: •... -
Page 37: Displaying The Alarm
6.2.1 Displaying the alarm The alarm is displayed by a repeated flashing sequence of the START / PAUSE button with red and green light (0,5 seconds on, 0,5 seconds off with a 2,5 second pause between the sequences). • button indicator START / PAUSE with red light → indicates the first digit of the alarm code (family) •... -
Page 38: Rapid Reading Of Alarm Codes
Rapid reading of alarm codes The last three alarm codes can be displayed even if the programme selector is not in the tenth position (diagnostics) or if the appliance is in normal operating mode (e.g. during the execution of the washing programme): →... -
Page 39: Cancelling The Memories
Cancelling the memories To cancel the content of the memories, proceed as follows: 1. Select diagnostic mode and turn the programme selector to the tenth position. 2. Push the OPTIONS 3 and 4 button (as represented in figure). 3. Hold down the buttons till the LCD display shows “Memories have been reset” (at least 5 seconds). -
Page 40: Washing Programmes And Options
8 WASHING PROGRAMMES AND OPTIONS Programmes The washing programmes can be configured. The basic programmes are listed in the table below. Programme Temperature (°C) Number of rinses Final spin (rpm) 67(*) (**) 55 (*) (**) 450/650/850/1000/1200/ Cotton 1300/1400/1600 44(*) (**) 50/40E cold 42(*) -
Page 41: Options
Options The table below lists the possible options for the washing programmes, the compatibility of the various options and with the cycle, and when it is possible to select or modify the options. The options can be selected in three ways: using the programme selector: in this case, the options are configured as special programmes;... - Page 42 OPTIONS 40°C 30°C Sport cold 30°C Shirts 40°C Mixed° 90°C 60°C Hygienize 50°C 40°C 60°C 50°C Grass 40°C 60°C Express 90°C 60°C 50°C Sensitive plus 40°C 30°C cold 30°C Rapid 40°C 30°C Viscose cold 30°C Soak Rinses Delicates Rinses Conditioner Delicate conditioner Drain Spin...
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Page 43: Compatibility Between Options
8.2.1 Compatibility between Options OPTIONS Rinse-hold Night cycle Pre-wash (*) (*) Stains Bleach (*) (*) X X X Super rinse Easy-iron Economy Intensive Normal Daily Light Quick Super Quick Reduced spin speed No spin Half-load Selection Phases in Pre-wash which Wash selection or modification... -
Page 44: Description Of Options
Description of options • Rinse-hold → Stops the appliance with water in the tub before the final spin cycle. → To drain the water, reset the programme and then select a drain or spin cycle. • Night cycle → Eliminates all spin phases and adds three rinses in COTTON cycles and two rinses in SYNTHETICS cycles. - Page 45 • Reduced spin speed → Reduces the speed of all spins as shown in the table. 900 1000 1100 1200 1300 1400 1550 Maximum spin speed (rpm) Reduction for COTTON (rpm) Reduction for ALL OTHER CYCLES (rpm) • No spin →...
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Page 46: Technical Characteristics
TECHNICAL CHARACTERISTICS Control system memory 9.1.1 General structure of the memory system The system features an EEPROM memory module, fitted externally to the microprocessor, which serves to memorize the configuration data, the description of the cycle, the status of the appliance in the event of a power failure, and the alarms. -
Page 47: Ram
Washing cycle tables: Each washing cycle consists of a series of phases (steps); the steps are the basic instructions which comprise the description of the cycle, which is common to all appliances having the same characteristics: Water fill Motor movement Reset Heating Drain... -
Page 48: Door Interlock
Door interlock There are two types of door interlock: • voltmetric with PTC • instantaneous 9.2.1 Voltmetric interlock with PTC 10 Suppressor 19 Door interlock 20 PCB ON/OFF = Main switch (programme selector) 9.2.1.1 Operating principle When the washing programme is started by pressing the START/PAUSE button, the bi-metal PTC (contacts 3-5) is powered by the triac on the PCB: after 2 –... -
Page 49: Instantaneous Door Interlock
9.2.2 Instantaneous door interlock • With this safety device it is possible to open the door immediately after the end of the cycle. Door interlock 19 Suppressor 20 PCB ON/OFF = Main switch (programme selector) 9.2.2.1 Operating principle When the ON/OFF switch closes and the appliance is switched on, power is applied to the bimetallic PTC switch (contact 4-2), but the door remains unlocked. -
Page 50: Water Fill System
Water fill system The electric valves are powered by the PCB by means of the triac and the control of the water level in the tub is carried out by the analogue pressure switch. Analogue pressure switch Prewash electric valve Wash electric valve Bleach electric valve 20 PCB... -
Page 51: Drain Pump
Drain pump 15 Drain pump 16 Thermal protector 20 PCB The PCB powers the drain pump via a triac as follows: until the electronic pressure switch closes on empty, after which the pump is actioned for a brief period or passes to the subsequent phase; for a pre-determined period (and eventually an alarm appears). -
Page 52: Heating
Heating NTC temperature sensor 13 Heating element (with thermal fuses) 14 PCB K1 Relay 1. Tubular casing 2. Thermal fuses 3. NTC Sensor 4. Connectors The heating element is powered by a relay (K1) of the electronic board and is provided with two thermal fuses, which interrupt if the temperature degree exceeds the values by which they are calibrated. -
Page 53: Three-Phase Asynchronous Motor
Three-phase asynchronous motor 11. Tachometric generator 20. PCB 23. Inverter 24. Motor X-Y-X = Motor windings 9.9.1 Power supply to motor Three-phase power is fed by the inverter (4) which sends, through the connectors 5-6-7, the three phases to connectors 1-2-3 on the motor (nodes V-W-U), where the windings (Y-X-Z-) are connected. The phase shift between the phases is 120°... -
Page 54: Anti-Foam Control System
9.10 Anti-foam control system The anti-foam control procedure (if featured) is performed via the anti-boiling pressure switch. Spin phase without foam Spin phase with little foam Spin Spin Anti-foam (Electronic level) 450 rpm pulses 450 rpm pulses FUCS FUCS • Spin with little foam: if the contact of the electronic pressure switch closes on FULL, the spin phase is interrupted;... -
Page 55: Fucs ( Fast Unbalance Control System)
9.11 FUCS ( Fast Unbalance Control System) The control procedure for unbalanced loads is performed dynamically, before each spin cycle, as follows: The phase begins at a speed of 55 RPM. The speed may not drop below this threshold; if it does, the check is repeated. - Page 56 • An example of drum balancing in the longest interval of time available Phase Unbalance rating Time-out (sec) • An example of unbalancing after all FUCS phases have been performed In this case, the spin (or pulse operation) is skipped. 56/66 SOI/DT 2007-02 dmm 599 38 61-92...
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Page 57: Table Of Alarm Codes
9.12 Table of alarm codes Alarm Possible fault Action/machine status Reset Tap closed or water pressure too low; Drain tube improperly positioned; Water fill Cycle is paused with door locked. START/RESET solenoid valve is faulty; Leaks from water circuit on pressure switch; Pressure switch faulty;... - Page 58 Alarm Possible fault Action/machine status Reset Motor defective; Wiring defective on inverter for motor, inverter board defective, Cycle stops with door locked (after 5 attempts). RESET abnormal motor operation (motor overloaded). Motor defective; Wiring defective on inverter for motor; Cycle stops with door locked (after 5 attempts). RESET Inverter board defective.
- Page 59 Alarm Possible fault Action/machine status Reset Power supply problems (incorrect / disturbance); PCB faulty. Wait for frequency nominal conditions. OFF/ON Power supply problems (incorrect / disturbance); PCB faulty. Wait for voltage nominal conditions. OFF/ON Power supply problems (incorrect / disturbance); PCB faulty. Wait for voltage nominal conditions.
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Page 60: Diagram With Three-Phase Asynchronous Motor
10 Diagram with THREE-PHASE ASYNCHRONOUS MOTOR 60/66 SOI/DT 2007-02 dmm 599 38 61-92... - Page 61 • Key to diagram with THREE-PHASE ASYNCHRNOUS MOTOR Electrical components on appliance Components on main board 1. Display board DOOR_TY Door interlock Triac 1a. LCD display DRAIN_TY Drain pump Triac 2. Flowmeter REC-TY Recirculation pump Triac 3. Analogue pressure switch Heating element relay 4.
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Page 62: Accessibility
11 ACCESSIBILITY 11.1 To the electronic control system 11.1.1 Work top Remove the two rear screws, push the top panel towards the rear and release from the cabinet. 11.1.2 Control panel Press the drawer lock. Extract. d. Remove the screw which secures the control panel to the dispenser. Remove the clamp which secures the wiring to the board casing. - Page 63 g. Loosen the screws which secure the cross-member to the cabinet. h. Release the hook which secures the dispenser to the cross-member. Lift the control panel up. Loosen the screws which secure the cross-member to the control panel. k. Release the hook which secures the control panel to the cross- member.
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Page 64: Door Interlock
11.2 Door interlock a. Remove the ring that secures the bellow gasket to the cabinet. b. Remove the bellow gasket. c. Remove the screw which secures the door interlock to the front side. d. Push inside the hook. e. Push it upwards. Extract the door interlock. -
Page 65: New Drain Filter
11.3 New drain filter a. Open the filter door with the appropriate tool (supplied with the appliance), because it is locked. To empty the drain circuit: b. Remove the cap in the filter knob (after positioning a vessel to collect the water). c. -
Page 66: Inverter Board
11.4 Inverter board a. Release the hook. b. Push the hook inside, extract it. c. Push the wing which secures the board the cabinet. SOI/DT 2007-02 dmm 66/66 599 38 61-92...