Electrolux 6 Series Service Manual
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Electrolux 6 Series Service Manual

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© ELECTROLUX HOME PRODUCTS
Customer Care - EMEA
Training and Operations Support
Technical Support
Edition: 03/2011 - Rev. 00
Series 6
Series 7
machines with electronic
Publication
number
599 74 12-51
Technical and functional
EN
SERVICE MANUAL
WASHING
Top loading washing
control system
EWM09
characteristics
NEW
COLLECTION
6 / 7
SERIES

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  • Page 1 SERVICE MANUAL WASHING Series 6 Series 7 Top loading washing machines with electronic © ELECTROLUX HOME PRODUCTS control system Customer Care - EMEA Publication Training and Operations Support number Technical Support EWM09 599 74 12-51 Technical and functional characteristics COLLECTION Edition: 03/2011 - Rev.
  • Page 2 Technical Support - A.D.L. 2/83 599 74 12-51 Rev.00...
  • Page 3 INDEX PURPOSE OF THIS MANUAL ........................5 WARNINGS ..............................6 SERIES 6 ................................. 7 General characteristics ..........................7 Control panel............................. 8 3.2.1 Styling ..............................8 3.2.2 Control panel configuration........................ 9 3.2.3 Programme selector (S1) ........................9 3.2.4 Programme configuration ........................9 3.2.5 Pushbuttons –...
  • Page 4 11.7.1 General characteristics ........................51 11.8 Door safety interlock ........................... 52 11.8.1 Delayed opening safety device....................... 52 11.9 Universal motor ........................... 53 11.9.1 AGS ..............................54 11.10 DSP drum positioning device (Drum-Self-Position) ................56 11.10.1 DPS operating control ........................56 11.11 Solenoid valves ...........................

  • 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 washing machines fitted with the EWM09 SERIES 6 7 electronic control system. Previous platforms (electronic / mechanical) used a safety pressure switch which controlled the minimum water level in the tub, beneath which the supply to the heating element was interrupted.
  • Page 6 Before starting work on a piece of equipment, check that the earth in the lodgings is working properly by using an appropriate tool and follow the instructions described / illustrated on the Electrolux Learning Gateway portal http: / / electrolux.edvantage.net When the work is finished check that the equipment’s safety conditions have been reinstated, as...

  • Page 7: General Characteristics

    3 SERIES 6 3.1 General characteristics The EWM09 electronic control system consists of two circuit boards plus the motor control system (inverter). The control / display circuit board, inserted in a plastic box, secured to the control panel. The figure shows: The control / display circuit board and plastic container already assembled.

  • Page 8: Control Panel

    3.2 Control panel 3.2.1 Styling • Max. 7 buttons • Programme switch with 15 positions including the 0 position • 14 LEDs • Display • Positioning of LEDs and buttons • Display board assembly, exploded view 1. Selector board protection 2.
  • Page 9 3.2.2 Control panel configuration The washing programmes, the functions of the selector knob and the various buttons vary according to the model, since these are determined by the configuration of the appliance. 3.2.3 Programme selector (S1) The selector used is a knob that has an index and a zero position. There are still 15 positions, 14 of which are programmable depending on the models while the 0 position is not programmable and is fixed.
  • Page 10 3.2.5 Pushbuttons – LEDs and LCD The functions of each button are defined by the configuration of the appliance. • Button no. 1: ON / OFF This button is always present, whatever the styling. − Press it to turn the appliance on. −...
  • Page 11 • Button no. 4: OPTION This button is configurable and is related to LED (L3). Depending on the configuration of the appliance, it can perform the option of: − Extra-rinse. Press this button to enable / disable the option related to it, with the respective lighting / turning off of the LED.
  • Page 12 3.2.6 LCD series 6 The information described below also appears on the LCD: • Padlock: The icon lights up when the “child lock” is on. It indicates that all the buttons are disabled to prevent children from modifying, starting or pausing the cycle; If any button is pressed while it is enabled the icons will flash.
  • Page 13 4 SERIES 7 4.1 General characteristics The EWM10931 electronic control system consists of two circuit boards plus the motor control system (inverter). The control / display circuit board, inserted in a plastic box, secured to the control panel. The figure shows: The control / display circuit board and plastic container already assembled.
  • Page 14 4.2 Control panel 4.2.1 Styling • Max. 8 buttons • Programme switch with 16 positions without the 0 position • 20 LEDs • • Positioning of LEDs and buttons • Display board assembly, exploded view 7. Selector board protection 8. Display board protection 9.
  • Page 15 4.2.2 Control panel configuration The washing programmes, the functions of the selector knob and the various buttons vary according to the model, since these are determined by the configuration of the appliance. 4.2.3 Programme selector (S1) The selector used is a HI-FI type, that is, the knob has non index and no reset position, the programme selected is indicated by the lighting of the corresponding LED.
  • Page 16 4.2.5 Pushbuttons – LEDs and LCD The functions of each button are defined by the configuration of the appliance. • Button no. 1: ON / OFF This button is always present, whatever the styling. − Press it to turn the appliance on. The buzzer concurrently plays a melody (where enabled), the LCD display lights up (the illuminated symbols are those of the programme).
  • Page 17 • Button no. 5: OPTION This button is related to LED (L2), and performs the option of: − Extra-rinse. Press this button to enable / disable the option related to it, with the respective lighting / turning off of the LED. At the same time, the programme time is updated (via the three digits).
  • Page 18 4.2.6 LCD series 7 The information described below also appears on the LCD: • Programme phases: The three icons shown have the following meanings, respectively: − Wash / Prewash − Rinse − Spin They are lit during the selecting phase to display which phases the programme includes.
  • Page 19 • End of cycle When the cycle ends and you can open the door, the display shows a permanently lit 0. Stopping the machine with water in the tub, at the end of programmes with the RINSE HOLD option, is displayed by a permanently lit zero. The LED indicating the door remains on and the LED of the START / PAUSE button is turned off.
  • Page 20 5 BUZZER This consists of a multi-tone beeper and starts working in the following cases: − When the appliance is turned on and off, it plays two different musical tunes. − When a button is pressed it emits a short “Click”. −...

  • Page 21: Exiting Demo Mode

    6 DEMO MODE A special cycle is designed to demonstrate the operation of these appliances in shops, without connecting them to the water mains: − The door closure device is activated normally. − All motor’s low speed movements, the pulses and spin are disabled. −...

  • Page 22: Accessing Diagnostics

    7 DIAGNOSTIC SYSTEM 7.1 Accessing diagnostics Do not start the procedure with the buttons in the combination pressed Series 6 Series 7 Turn the appliance on at the ON / OFF switch. In series 7, the first LED in the right-hand row lights up.

  • Page 23: Diagnostic Test Phases

    Diagnostic test phases Irrespective of the type of circuit board and the configuration of the selector, after entering the diagnostic mode, turn the programme selector dial clockwise to perform the diagnostic cycle for the operation of the various components and to read any alarms. Concurrently, a selector control code is shown on the LCD display, which indicates for two seconds the description in the last column of the table below.
  • Page 24 Position 3 Water fill to pre-wash Purpose of the test: To check the correct operation of the pre-wash compartment compartment water route • Door safety interlock Components activated: • Pre-wash solenoid • Door closed Working conditions: • Water level below anti-flooding level •...
  • Page 25 Position 6 No command Purpose of the test: ------------- ------------- Components activated: ------------- Working conditions: LCD display Position 7 Heating Purpose of the test: To check the correct operation of the heater unit. • door fastening device. Components activated: • Wash solenoid, if the water in the tub is not enough to cover the heating element.
  • Page 26 Position 9 Drain, calibration of Purpose of the test: To check the correct operation of the spin cycle analogue pressure switch drain pump and calibrate the analogue pressure and spin switch. • Door safety interlock Components activated: • Drain pump •...

  • Page 27: Displaying The Alarms To The User

    8 ALARMS 8.1 Displaying the alarms to the user When a problem arises in the appliance, which generates a “WARNING” or an “ALARM”, this is displayed with three digits, where normally the remaining cycle time is represented. The alarms displayed to the user are listed below: E10 - Water fill difficulty (tap closed) E20 - Drain difficulty (filter dirty) E40 - Door open...

  • Page 28: Reading The Alarms

    8.2 Reading the alarms The last three alarms stored in the FLASH memory of the PCB can be displayed: • Enter the diagnostic mode. • Irrespective of the type of circuit board and configuration, turn the programme selector knob clockwise to the tenth position and this will display the last alarm.

  • Page 29: Rapid Reading Of Alarms

    8.3 Rapid reading of alarms The last three alarms can even be displayed if the selector is not in the tenth diagnostic position or the machine is in normal operation (e.g. while a washing programme is in progress): • Press the START / PAUSE button and the nearest option button simultaneously (as if you were entering DIAGNOSTIC mode) for at least 2 seconds: the LCD display shows the last alarm.
  • Page 30 8.5 Alarm Summary Table Description Possible fault Machine status / action Reset • Tap closed. • Water pressure too low. • Drain pipe improperly positioned. • Water fill solenoid valve faulty. START / Water fill difficulty during washing Cycle is paused with door locked. •...
  • Page 31 Description Possible fault Machine status / action Reset • Wiring; Electronic pressure switch. Electronic pressure switch circuit Cycle stops with door locked. RESET faulty • Main electronic circuit board. • Drain tube kinked / clogged / improperly positioned. • Solenoid valve faulty. •...
  • Page 32 Description Possible fault Machine status / action Machine status Reset • Check whether the door is closed properly. • Faulty wiring. CLOSE Door open Cycle paused. • Door safety interlock faulty. THE DOOR • Main circuit board faulty. • Faulty wiring. •...
  • Page 33 Description Possible fault Machine status / action Reset • Faulty wiring. • NTC probe for wash cycle faulty. Insufficient heating during the START / The heating phase is skipped. • Heating element faulty. washing phase RESET • Main circuit board faulty. •...
  • Page 34 Description Possible fault Machine status / action Reset • Faulty wiring. NTC probe for wash cycle faulty START / • NTC probe for wash cycle faulty. The heating phase is skipped. (short-circuited or open) RESET • Main circuit board faulty. •...
  • Page 35 Description Possible fault Machine status / action Reset • Faulty wiring. Communication error between • Control / display circuit board faulty. ---------------- RESET main PCB and display board • Main circuit board faulty. Communication inconsistency • Incorrect control / display board. between main PCB and display Cycle blocked.
  • Page 36 Description Possible fault Machine status / action Reset • Drain filter clogged / dirty. Drain filter clogged START / Warning displayed at the end of cycle. • Drain hose blocked / kinked / too high. (drain phase too long) RESET •...

  • Page 37: Operating Time Counter

    9 OPERATING TIME COUNTER Using a specific procedure, the operator can display the total operating time for the appliance, which is counted from the moment it is first switched on. The unit can count up to a maximum of 6,550 hours of operating time. Only the operating time of normal programmes (and not diagnostic cycles) is counted The actual operating time for the cycle is counted (which does not include pauses, delayed start time, rinse hold time and soaking phases).

  • Page 38: Display Of Total Operating Time

    9.2 Display of total operating time This time is displayed with a sequence of two digits at a time: the first two digits indicate thousands and hundreds, the second two digits indicate tens and units. For example, if the operating time is 6,550 hours, the display will show the following sequence: Phase 1 →...

  • Page 39: Description Of Options

    9.3 Description of options 9.3.1 Rinse hold During the cycle the intermediate rinses and spins are performed. Stops the appliance with water in the tub before the final spin cycle. To drain the water, simply press the START / PAUSE button to perform the drain phase and the spin cycle. 9.3.2 Pre-wash Adds a pre-wash phase at the start of the cycle with water heating to 30°C (or cold, if selected).

  • Page 40: Technical Characteristics

    10 TECHNICAL CHARACTERISTICS 10.1 Construction 1. Frontal piece. 10. Lids. 19. Transmission belt. 2. Sides. 11. Drum. 20. Pulley. 3. Back panel. 12. Inlet. 21. Drum rotation motor. 4. Base. 13. Upper cover. 22. DSP. 5. Filter. 14. Detergent dispenser. 23.

  • Page 41: Detergent Dispenser

    10.2 Detergent dispenser 10.2.1 Detergent dispenser Before entering the tub, the cold water passes through the detergent dispenser picking up the detergent inside it. This dispenser is split into 3 compartments marked with the symbols: Wash (dispenser 1) Pre-wash (dispenser 3) Fabric conditioner (dispenser 2) 1.
  • Page 42 10.2.2 Working principle of water dispenser. Pre-wash During the pre-wash phase the right solenoid valve is activated, the water coming from the load pipe passes through the pressure reducer and then to the water dispenser, which then sends the water into the left dispenser picking up, if there, the detergent needed for the pre-wash.
  • Page 43 10.3 Washing unit WASHING UNIT Load capacity (cottons) Type Drum volume max. 6 kg 42 litres The washing unit is made up of: A stainless steel drum (4) inserted inside a carboran tub (5) with a welded cover (3). 2 counterweights are positioned to the sides (2 and 6) needed to reduce the swinging caused by the clothes during washing.

  • Page 44: Water Circuit

    10.4 Water circuit 10.4.1 OKO version drain circuit 1. Pre-filing pipe. 2. Drain pump. 3. Drain pipe. 4. Filter unit tub pipe containing the sphere. 5. Pressure chamber. 6. Filter unit amassed in the base frame. Technical Support - A.D.L. 44/83 599 74 12-51 Rev.00...

  • Page 45: Electronic Control

    10.5 Electronic control The electronic control is made up of: 1. Control / display circuit board. 2. Main electronic circuit board. The control / display PCB contains: the selector, to select the wash programme, the LCD screen to view information relating to the programme;...
  • Page 46 10.5.1 Connecting electric parts Solenoid valve Display board Series 6 Motor Series 7 Door lock Drain pump Analogue Water control pressure sensor Heating element Technical Support - A.D.L. 46/83 599 74 12-51 Rev.00...

  • Page 47: Electrical Components

    11 ELECTRICAL COMPONENTS When replacing any of the components, please refer to the code shown in the list of spare parts relating to the appliance being repaired. 11.1 Anti-disturbance filter This device is connected to the electricity power line input of the appliance and avoids the emission of radio frequency disturbance in the electricity mains.

  • Page 48: Drain Pump

    11.3 Drain pump • When replacing the pump, please refer to the code shown in the list of spare parts relating to the appliance. 11.3.1 General characteristics 1. Wheel 2. Rotor 3. Stator The pump, which drains the water at the end of the various washing cycle phases, is centrifugal and is actuate by a synchronous motor.

  • Page 49: Water Control

    11.4 Water control The Aqua control is a sensor placed touching the bottom of the appliance which detects any water leaks inside the washing machine and powers the drain pump (not only during normal operation but also when the appliance is turned off but plugged in).

  • Page 50: Temperature Sensor

    11.6 Temperature sensor • When replacing the heating element, please refer to the code shown in the list of spare parts relating to the appliance. • It is strictly forbidden to tamper with the heating element in any way!!! (e.g. changing the NTC probe, etc...) 1.

  • Page 51: Analogue Pressure Switch

    11.7 Analogue pressure switch 11.7.1 General characteristics The electronic pressure switch is an analogue device that controls the water level in the tub, used in models with electronic control system, and it is directly connected to the main PCB. 1. Small pipe 2.

  • Page 52: Door Safety Interlock

    11.8 Door safety interlock 11.8.1 Delayed opening safety device. The door delay safety device ensures that while the tumble-dryer is working normally, it is impossible to open the door for safety reasons and ensures that at the end of the wash cycle the door can only be opened after a set time. Nib lock lever 1.
  • Page 53 11.9 Universal motor Main circuit board Door safety interlock Tachometric generator Motor Technical Support - A.D.L. 53/83 599 74 12-51 Rev.00...
  • Page 54 11.9.1 AGS is the abbreviation for the Italian words “Algoritmo di Gestione dello Sbilanciamento” (Algorithm of Unbalance management). It is a complete procedure for the distribution of the laundry in the drum, limiting the static residual unbalance and guaranteeing an effective spin phase in an axis subsequently avoiding excessive vibrations in the washing machine. AGS works properly in all washing machines fitted with a speed sensor and a torque sensor.
  • Page 55 In this graph we can see that after a short unravelling phase we move immediately on to a phase where the drum spins at a variable high speed in order to place the laundry uniformly across the surfaces of the drum. Once this phase is complete we have the ideal condition for starting the spin;...
  • Page 56 11.10 DSP drum positioning device (Drum-Self-Position) The DSP or Drum Self Position is an electronic device for putting the drum in the right position so that once the wash cycle is finishes the 2 load lids are in the upper part of the washing machine so that the person operating it does not have to rotate the drum manually.

  • Page 57: Solenoid Valves

    11.11 Solenoid valves This component introduces water into the detergent dispenser and is controlled electrically by the main circuit board via Triac. The level of water in the tub is controlled by the analogue pressure switch. 1. Water inlet 2. Solenoid valve body 3.
  • Page 58 11.11.2 Problems relating to the solenoid valves • Mechanical jamming of the solenoid valve The solenoid valve may jam open without being actuated (which will cause flooding if the pressure switch controlling the water level does not trip). If this occurs, the electronic control system (which continuously monitors the flow sensor), starts the drain pump and simultaneously displays an ALARM.
  • Page 59 12 DIAGRAMS 12.1 WM diagram with UNIVERSAL MOTOR EWM Technical Support - A.D.L. 59/83 599 74 12-51 Rev.00...
  • Page 60 12.2 Key to diagram Appliance electrical components PCB components Main electronic circuit board DRAIN_YTY Drain pump triac Door safety interlock DOOR_TY Door interlock triac Pressure switch PWELT_TY Pre-wash solenoid triac NTC (washing) WELV_TY Wash solenoid triac Pre-wash solenoid MOTOR_TY Drum rotation motor triac Wash solenoid Heating element relay Tachometric generator (motor)
  • Page 61 13 ACCESSIBILITY Before intervening on the equipment place a protection above the drum in order to prevent small parts falling inside the tub. 13.1 Control panel 13.1.1 Dismantling • Insert from one side then another, a screwdriver into the side slits as shown in the figure. •...

  • Page 62: Control Circuit

    13.2 Control circuit After opening the control panel, we can remove the control circuit board. • Disconnect the connectors that link the control circuit board to the main board. • Unscrew the screws holding on the control panel board. • You do not need to remove the screws marked with that hold the cover on the board.
  • Page 63 13.5 Cover • Move the two hinge pivots inwards until they have been completely removed. • Lift up the cover and remove. 13.6 Water dispenser • Remove the detergent dispenser. • Remove the control panel. • Open the two clamps using a screwdriver, that block the pipes carrying water from the solenoid valves to the water dispenser.
  • Page 64 13.7 Sides Removing the sides you can access all various parts of the washing machine. • Loosen the screws that secure the sides to the back panel. • Move the panels to the back of the washing machine in order to release them from the upper rails shown in the figure.
  • Page 65 13.9 Solenoid valves • Remove the flexible water flow pipe making sure firstly that you have closed the water low tap. • Remove the control panel. • Open the two clamps using a screwdriver, that block the pipes carrying water from the solenoid valves to the water dispenser. •...

  • Page 66: Main Board

    13.11 Main board • Remove the right side panel. • Unscrew the two screws on the back part of the equipment and the side screws that lock the board support to the back panel. • Disconnect the mass connections located on the frames to make it easier to remove the board.

  • Page 67: Front Panel

    13.12 Front panel Before removing the frontal piece place a support under the motor in order to make the operation easier. • Remove the two side screws that hold the frontal piece on to the inlet. • Remove the two side screws that hold the frontal piece to the base frame.

  • Page 68: Base Board

    13.14 Base board • Remove the left and right panels. • Remove the transport roll. • Insert a screwdriver into the points indicated by the arrows starting from a side one. • Lever with the screwdriver and simultaneously rotate the base board downwards. •...

  • Page 69: Bellow Seal

    13.16 Bellow seal • Remove the left and right sides. • Remove the support wiring. • Cut the upper and lower cutting ring with a pair of pliers. • Remove the bellow taking care not to ruin the 2 bases. •...
  • Page 70 • Start re-assembling the bellow by inserting the lower part first. • Then insert the upper part. • Check that the bellow is inserted properly by checking that the reference notches are positioned properly. External right and left sides. Technical Support - A.D.L. 70/83 599 74 12-51 Rev.00...
  • Page 71 Inside frontal zone. • Insert the blocking rings. • Tighten them initially with your hands then block them with the aid of a pair of pliers. Technical Support - A.D.L. 71/83 599 74 12-51 Rev.00...
  • Page 72 13.17 Inlet • Removing the cover. • Remove the detergent dispenser. • Remove the control panel. • Cut the upper cutting ring with a pair of pliers. • Release the bellow from the upper side. • Remove the water dispenser. •...
  • Page 73 • Remove the 2 right screws and the 2 left screws that fasten the outlet to the column and back panel. • Unscrew the 2 back screws. • Gently lift the outlet from the back part. • Push it towards the back panel to free the front part held to the base by the fasteners.
  • Page 74 13.18 Counterweights 13.18.1 Right counterweight The right counterweight weighs around 10 kg so take care when removing it. Dismantling. • Remove the right side panel. • If there is an aluminium frame remove the 2 screws that hold the counterweight to it. •...
  • Page 75 13.19 Shock absorbers • Remove the left and right sides. Front shock absorber Rear shock absorber • Release the brass stop plugs positioned above and under each shock absorber. • Remove the shock absorbers. Technical Support - A.D.L. 75/83 599 74 12-51 Rev.00...
  • Page 76 13.20 Pulley • Remove the right side panel. • before removing the belt check and make note of the belt’s position on the motor axis. • Remove the central screws that hold the pulley. • Extract the pulley by pulling it outwards. •...
  • Page 77 13.22 Heating element • Remove the right side panel. • Remove the electric connections. • Slacken the central screws located on the heating element (you don’t have to remove the screw). Residual water could overflow wetting the motor. • Extract the heating element by pulling it outwards. 13.23 Drum rotation motor •...
  • Page 78 13.25 Drain pump and circulation pump 13.25.1 Bottom lid • Remove the left side panel. • Lie the equipment on its right side. • Remove the 6 screws. • Remove the bottom lid. Before refitting the bottom lid clean the slot runner well on the bottom of the washing machine and the slot base of the lid and fill it will silicone in order to make it fully seal-proof again.
  • Page 79 13.25.2 Drain pump The drain pipe is held in place by two runners and 2 clips that prevent it from withdrawing. If the washing machine doesn’t have a circulation system the drain pump will be directly inserted into the filter unit. •...
  • Page 80 13.26 Bearings • Remove the right and left sides according to the bearing that you are planning on dismantling. • Remove the central screw located in the pivot drum. • Also remove the belt and pulley from the pulley side. •...
  • Page 81 13.26.2 Bearing support unit with no seal ring • Clean the axis and slightly grease the seal. • Insert the seal making sure that the thin lip seal is positioned outwards. • Push the seal as far as it can go. The bearing unit is self-locking so do not tighten it excessively.
  • Page 82 13.27 Remove the washing unit. • Remove the 2 left and right sides. • Cut and remove the lower cutting ring on the bellow. • Release the bellow from the lower side. • If there is a spray pipe, slacken the clamp, release the clamp that holds it to the tub and remove it.
  • Page 83 Revisions: Revision Date Description Written by Approved by - on 03 / 2011 Document creation A.D.L. A.D.L. – 03 / 2011 Technical Support - A.D.L. 83/83 599 74 12-51 Rev.00...

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