Table of Contents
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SERVICE MANUAL
WASHING
Washing machines with
EWM 1000 PLUS
electronic control system
© ELECTROLUX HOME PRODUCTS
and
ITALY S.p.A.
"AEG Nexxxt"
Publication no.
Spares Operations Italy
display board
Corso Lino Zanussi, 30
I - 33080 PORCIA /PN
599 38 47-87
With sensor
Fax +39 0434 394096
EN
ARCHED cabinet
Edition: 2006-11-29
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Table of Contents
Related Manuals for Electrolux Washing machines with EWM 1000 PLUS
Summary of Contents for Electrolux Washing machines with EWM 1000 PLUS
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Page 1: Service Manual
SERVICE MANUAL WASHING Washing machines with EWM 1000 PLUS electronic control system © ELECTROLUX HOME PRODUCTS ITALY S.p.A. “AEG Nexxxt” Publication no. Spares Operations Italy display board Corso Lino Zanussi, 30 I - 33080 PORCIA /PN 599 38 47-87 With sensor... - Page 2 SOI/DT 2006-11 dmm 599 38 47 87 2/39...
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Page 3: Table Of Contents
CONTENT Purpose of this manual ..........................5 PRECAUTIONS ............................5 GENERAL CHARACTERISTICS....................... 5 CONTROL PANEL............................. 6 Control/display board.......................... 7 4.1.1 Version with display:........................7 Washing programmes......................... 8 4.2.1 Configuration of the programmes....................8 Programme selector ........................... 8 Start/Pause ............................8 Functions of the buttons ........................ - Page 4 DIAGNOSTICS SYSTEM ........................28 Access to diagnostics system......................28 Exiting diagnostics system........................ 28 Phases of the diagnostics test ......................28 8.3.1 Display board diagnostics......................30 8.3.2 Programme selector ........................30 ALARMS ..............................31 Displaying the alarms to the user ..................... 31 9.1.1 Alarms displayed during normal operation ................
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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 EWM 1000 plus electronic control system. The electronic control system plus EWM1000 plus consists of a main electronic board and one control/display board, “Aeg Nexxxt”... -
Page 6: Control Panel
4 CONTROL PANEL The configuration of the control panel depends on the following: Type of control/display board Programme selector Design of the control panel (no. of buttons, LEDs) Different configuration of the buttons Example of control panel: Buttons: - max. 9, horizontally LEDs: - max. -
Page 7: Control/Display Board
4.1 Control/display board 4.1.1 Version with display: 3 digits 27 LEDs: 26 red, one bicolour (red and green) 9 buttons Version without display: 26 LEDs: 25 red, one bicolour (red and green) 8 buttons SOI/DT 2006-11 dmm 599 38 47 87 7/39... -
Page 8: Washing Programmes
4.2 Washing programmes 4.2.1 Configuration of the programmes The table below lists the parameters that can be used to define the washing programmes. Types of fabrics Cotton/linen, Synthetics, Delicates, Wool, Hand-wash Special programmes Soak, Rinses, Spin, Drain, Conditioner Normal, Maximum: the initial temperature is the maximum that Temperature can be selected for a specific washing programme Spin... -
Page 9: Washing Programmes And Options
5 WASHING PROGRAMMES AND OPTIONS 5.1 Programmes The washing programmes can be configured. The basic programmes are listed in the table below. Programme Number of rinses Final spin (rpm) Temperature (°C) 50 (*)(**) 450/650/850/1000/1200/ Cotton 1300/1400/1600 50/40E 44 (*) cold 60/50E 42 (*) Synthetic... -
Page 10: Options Of The Washing Cycle
5.2 Options of the washing cycle The selection of the options is to be carried out after switching on the appliance and setting the desired programme with the selector and before pressing the start/pause button. When the button is pressed, the corresponding LED lights; by pressing it again the LED switches off. Possible options according the selected programme OPTIONS 90°C... -
Page 11: Description Of Options
5.3 Description of options 5.3.1 Night cycle Eliminates all spin phases and adds three rinses in COTTON cycles and two rinses in SYNTHETICS cycles. Stops the appliance with water in the tub before the final rinse. Switches off the buzzer (if configured) To drain the water select a drain or spin cycle. -
Page 12: Sensitive
5.3.9 Sensitive Adds a rinse in the COTTON – SYNTHETIC FABRICS. During the cotton cycles the movements pass from vigorous to normal. Eliminates the intermediate spins except from the last two which are reduced. 5.3.10 Extra rinse Adds two rinses in the COTTON, SYNTHETICS and DELICATES cycles. Eliminates the intermediate spin cycles, with the exception of the last rinse, which is reduced to 450 rpm. -
Page 13: Exclusion Of The Buzzer
5.3.18 “Exclusion of the buzzer” In models with the buzzer it is possible to exclude the acoustic signal during the selection or at the end of the cycle, but the alarm remains on. The key combination is described in the user manual attached with the appliance. -
Page 14: Display (Some Models)
5.5 Display (some models) The display shows the following information: three flashing digits, when the appliance is switched on. the duration of the washing programme, which appears after selecting it. This time corresponds to that necessary for the maximum load for every type of programme. After starting the programme, the time diminishes (and updates) by every minute. -
Page 15: Technical Characteristics
6 TECHNICAL CHARACTERISTICS 6.1 EWM1000 Plus Electronic control The EWM1000 Plus electronic control consists of a main PCB (1) and a control/display board (2). 6.1.1 Functions of the circuit board PROGRAMM DISPLAY BOARD μP Buzzer SELECTOR Display LEDs Buttons ELECTRICAL μP SENSORS LOADS... - Page 16 The overall structure of the microprocessor memory on the main PCB is subdivided into three sections: This area of memory contains the software with the general instructions that control the operation of the appliance, such as those of the electrical components and alarms. The ROM is set up by the manufacturer of the microprocessor, and cannot be modified.
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Page 17: Power Supply And Programme Selection
6.2 Power supply and programme selection The main board (3) is powered by the interference suppressor (1) and by the closure of the contacts of the main switch (2). The affected connectors are J6-2 (neutral) and J10-1 (line). The control/display board (4) is powered at 5V by the main board: through the programme selector (5) it is possible to select the programme. -
Page 18: Instantaneous Door Interlock
6.3.2 Instantaneous door interlock 1. Suppressor 2. Main switch (button or programme selector) 3. Door interlock 4. Main PCB 5. Door pilot lamp off • Operating principle When the appliance is switched on, the ON/OFF switch closes and the bi-metal PTC (contact 4-2) is powered;... -
Page 19: Control Pressure Switch For Water Level In The Tub
6.4 Control pressure switch for water level in the tub Control of the water level is performed by a two or three-level pressure switch which functions as follows: • contact 11-14: anti-boiling safety level • contact 21-24: first level • contact 31-32: anti-overflow safety level (not all models) 6.4.1 Pressure switch settings... -
Page 20: Water Fill System
6.5 Water fill system The solenoid valves are powered by the PCB via two or three triacs. The status of the pressure switch (empty/full) is detected by two “sensing” lines”. Anti-boiling level 1st level Pre-wash solenoid 5. Wash solenoid 6. Bleach solenoid (some models) 7. -
Page 21: Drain Pump
6.6 Drain pump 1. PCB 2. Anti-boiling pressure switch 8. Drain pump AB_S Anti-boiling level sensor The PCB powers the drain pump via a triac as follows: for a pre-determined period. until the anti-boiling pressure switch closes on EMPTY, after which the pump is actioned for a brief period or passes to the subsequent phase. -
Page 22: Water Control (Not In All Models)
Water Control (not in all models) The Water Control system is a sensor located in contact with the base frame. The sensor detects water leaks inside the machine (not only during normal operation, but also when the unit is off and plugged in) and starts the drain pump. -
Page 23: Heating
6.9 Heating Anti-boiling pressure switch 1st level pressure switch Heating element NTC temperature sensor Relay AB_S Anti-boiling level sensor L1_S 1st level sensor The heating element is powered by a relay on the PCB via the contacts of the pressure switch when closed on FULL. -
Page 24: Motor
6.10 Motor 1. PCB 2. Motor 3. Anti-boiling/anti-foam pressure switch M = rotor P = motor safety cut-out S = stator T = tachometric generator AB_S Anti-boiling/anti-foam level sensor 6.11 Power supply to motor The PCB powers the motor via a triac. The direction of rotation is reversed by switching of the contacts on the two relays (K2-K3), which modify the connection between the rotor and the stator. -
Page 25: Fucs" (Fast Unbalance Control System)
6.13 “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 can never fall below this threshold, otherwise the check is repeated. - Page 26 • Balancing in the available longer interval Phase Unbalancing index Time-out (sec) • Unbalancing after all phases In this case the spin (or impulse) is not performed. SOI/DT 2006-11 dmm 599 38 47 87 26/39...
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Page 27: Demo Mode
7 DEMO Mode 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 28: Diagnostics System
8 DIAGNOSTICS SYSTEM 8.1 Access to diagnostics system Using a single procedure, it is possible to access to the diagnostics system. After accessing this function, the following operations can be performed: control of the operation of each of the components in the appliance read / cancel the alarms The diagnostics cycles are available only if the communication between the main PCB and the display board is correct;... - Page 29 Diagnostics phases Selector position Components actioned Operating conditions Function checked All the LEDs light in sequence. When a button is Operation of the user pressed, the corresponding Always activated interface LED lights (and the buzzer, if featured, sounds) Door locked Water level below Water ducted through Door interlock...
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Page 30: Display Board Diagnostics
8.3.1 Display board diagnostics After entering the diagnostics system, the display board is checked: all LEDs and the display light in sequence (if featured). Pressing all buttons, the corresponding LEDs switch on or those closer; the display shows the hexadecimal code corresponding to the button codification. -
Page 31: Alarms
9 ALARMS 9.1 Displaying the alarms to the user Control of the alarm system can be configured; according to the model, therefore, some or all of the alarms may be displayed to the user. Normally all the alarms are displayed to the user except for: E10 –... -
Page 32: Reading The Alarm Codes
9.2 Reading the alarm codes In order to read the last alarm code memorized in the EEPROM on the PCB: • Enter diagnostics mode • Irrespective of the type of PCB and configuration, turn the programme selector clockwise to the tenth position. 9.2.1 Displaying the alarm The alarm is displayed by a repeated flashing sequence of the two LEDs (0.4... -
Page 33: Operation Of Alarms During Diagnostics
9.2.3 Operation of alarms during diagnostics All alarms are enabled during the components diagnostics phase. Moving the selector to pass from one control phase to the other, the appliance exits the alarm condition and performs the selected phase (if the alarm does not occur again). -
Page 34: Table Of Alarm Codes
9.6 Table of alarm codes Alarm Description Possible fault Action/machine status Reset Tap closed or mains pressure insufficient; drain hose incorrectly Difficulties in water fill for washing positioned; water fill solenoid faulty; leaks from the hydraulic circuit of Cycle paused with door closed Start the pressure switch;... - Page 35 Alarm Description Possible fault Action/machine status Reset Safety drain cycle – Cycle stopped Overheating during washing NTC sensor faulty; heating element faulty; wiring faulty; PCB faulty. with door open Safety drain cycle – Cycle stopped Heating element power relay faulty PCB faulty;...
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Page 36: Basic Circuit Diagram
10 BASIC CIRCUIT DIAGRAM 10.1 Diagram (without Water Control) SOI/DT 2006 11 dmm 36/39 599 387 47 87... -
Page 37: Key To Circuit Diagram
10.1.1 Key to circuit diagram Components in the appliance Components of the PCB 1. Electronic board 2. Suppressor BELV_TY Bleach solenoid Triac 3. ON/OFF switch DOOR_TY Door interlock Triac 4. ON/OFF pilot lamp DRAIN_TY Drain pump Triac 5. Door interlock Heating element relay 6. -
Page 38: Diagram (With Water Control)
10.2 Diagram (with Water Control) SOI/DT 2006 11 dmm 38/39 599 387 47 87... -
Page 39: Key To Circuit Diagram
10.2.1 Key to circuit diagram Components in the appliance Components of the PCB Electronic board Suppressor BELV_TY Bleach solenoid Triac Drain pump DOOR_TY Door interlock Triac Water control DRAIN_TY Drain pump Triac Anti-boiling pressure switch Heating element relay Door interlock Motor relay: clockwise rotation Heating element Motor relay: anti-clockwise rotation...