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SERVICE MANUAL
WASHING
WASHING-MACHINES
&
WASHER-DRYERS
ELECTROLUX HOME PRODUCTS
with electronic control
ITALY S.p.A.
EWM2000EVO
Publication no.
Spares Operations Italy
with sensors
Corso Lino Zanussi, 30
I - 33080 PORCIA /PN
599 36 82-59
"FULL SMD"
display board
Fax +39 0434 394096
EN
Production ZP (Porcia-Italy)
Edition: 2005-01-12 dmm
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Table of Contents
Related Manuals for Electrolux WASHING-MACHINES & WASHER-DRYERS
Summary of Contents for Electrolux WASHING-MACHINES & WASHER-DRYERS
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Page 1: Service Manual
SERVICE MANUAL WASHING WASHING-MACHINES & WASHER-DRYERS ELECTROLUX HOME PRODUCTS with electronic control ITALY S.p.A. EWM2000EVO Publication no. Spares Operations Italy with sensors Corso Lino Zanussi, 30 I - 33080 PORCIA /PN 599 36 82-59 “FULL SMD” display board Fax +39 0434 394096... - Page 2 SOI/DT 2005-01 dmm 2/67 599 36 82 59...
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Page 3: Table Of Contents
INDICE Purpose of this manual ..........................6 PRECAUTIONS ............................6 GENERAL SPECIFICATIONS........................7 General specifications WM ......................... 7 General specifications WD ......................... 7 CONTROL PANEL............................. 8 Control/display board.......................... 9 4.1.1 Version with display........................9 4.1.2 Version without display........................ 9 WASHING PROGRAMMES ........................10 Configuration of programmes ...................... - Page 4 8.3.4 PWL_1 (wool) Delicate movement .................... 28 8.3.5 PWL_4 (hand wash) Delicate movement .................. 28 8.3.6 Cotton/Linen, Synthetics – Intermediate Synthetics Prewash Spin .......... 29 8.3.7 Cotton/Linen, Intermediate Cotton/Linen Wash Spin ..............29 8.3.8 Cotton/Linen Final Spin ......................29 8.3.9 Synthetics Final Spin .........................
- Page 5 15.1 Flow meter............................. 62 15.2 Aqua Control ..........................62 15.3 Turbidity sensor..........................63 15.3.1 Installing the turbidity sensor ..................... 63 BASIC CIRCUIT DIAGRAM WD ......................64 16.1 Key for circuit diagram WD ......................65 BASIC CIRCUIT DIAGRAM WM......................66 17.1 Key for circuit diagram WM ......................
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Page 6: 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 2000EVO electronic control system and produced in Porcia (Italy). The electronic control system EWM 2000EVO consists of a main electronic board and one control/display board, “Full SMD”... -
Page 7: General Specifications
3 GENERAL SPECIFICATIONS General specifications WM Programme selector 16-24 positions with incorporated main switch Serial port DAAS-EAP communications protocol up to 38400 baud 220/240V Power supply 50/60 Hz Type of washing Jet-system Rinsing system Jet-system Collector, with tachometric generator Motor 850 ÷... -
Page 8: Control Panel
4 CONTROL PANEL The configuration of the control panel depends on the following: Type of control/display board (with or without display) Design of the control panel and position of the programme selector (right or left of the buttons) Number and configuration of the buttons (max. 8) ON/OFF switch: incorporated in the programme selector or with separated button. -
Page 9: Control/Display Board
Control/display board 4.1.1 Version with display 3 digits 28 LEDs 8 buttons 4.1.2 Version without display 21 LEDs 6 buttons 14 LEDs 6 buttons SOI/DT 2005-01 dmm 9/67 599 36 82 59... -
Page 10: Washing Programmes
5 WASHING PROGRAMMES Configuration of programmes The table below lists the parameters that can be used to define the washing programmes. Type of fabric Cotton/linen, Synthetic fibres, Delicates, Wool, Hand wash, Mini Special programmes Soak, Rinses, Spin, Drain, Conditioner Normal, Maximum: initial and maximum temperatures that can be Temperature selected for a specific washing programme Spin... -
Page 11: Washing Programmes And Options
6 WASHING PROGRAMMES AND OPTIONS Possible programmes The wash programmes can be configured to suit personal needs. The table below lists the standard programmes. Programme No. of rinses Final spin (RPM) Temperature (°C) 50 (*)(**) 450/650/850/1000/1200/ Cotton 1300/1400/1600 50/40E 44 (*) Cold (¹) 60/50E 42 (*) -
Page 12: Options Of The Washing Cycle
6.2 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 OPZIONI 90°C... -
Page 13: Description Of Options
6.3 Description of options 6.3.1 Night cycle All the spin phases are eliminated. Three rinses are added to COTTON cycles and one rinse is added to SYNTHETICS cycles. The appliance is shut down with water in the drum before the final spin. No buzzer (if appliance is configured with a buzzer). -
Page 14: Economy / Energy Label
6.3.9 Economy / Energy label The COTTON 40°/50°/60°/90° - SYNTHETICS 50°/60° programmes are modified to reduce energy consumption The wash temperature in the 90°/60°/50° programmes is reduced; the temperature in the 40° programme is increased by 4°. The duration of the wash phase is increased 6.3.10 Sensitive One rinse is added to the COTTON –... -
Page 15: Modifying The Spin Speed
6.3.17 Modifying the spin speed Reduces the speed of all spin cycles. The last position can be used for NO SPIN, RINSE-HOLD. If the NO-SPIN option is selected, three rinses are added in the COTTON cycle, and one in the SYNTHETICS cycle. -
Page 16: Variation Of Rinses When Options Are Selected
6.3.24 Variation of rinses when options are selected Number of rinses for the options Very short Short COTTON Normal Very short Short SYNTHETICS Normal Very short DELICATE Normal Normal WOOL Normal HAND WASH Normal N.B.: The HALF-LOAD option subtracts one rinse from all COTTON programmes, except for the VERY SHORT programme. -
Page 17: Leds
LEDs These LEDs display different information depending on machine configuration; the end-of-cycle LED is present on all models. Type of LED Function This LED lights up if the selected programme includes a prewash, and lights up during the Prewash prewash phase when the programme is executed. This LED lights up if the selected programme includes a wash phase, and lights up during Wash the wash phase when the programme is executed. -
Page 18: Washing Programmes
WASHING PROGRAMMES 7.1 Base programmes for Cotton / Linen: cold-30-40-60-90° (without options) Drain Recirc. Deterg Motor Movement CYCLE N.° Phase Description pump pump Dispens. Movem. Pause 90° 60°/60° 40° 30° Calibration Level No Movement DRAIN Flow Calibration Level No Movement WATER FILL Water softener Maintenance Time... -
Page 19: Rinses Of Cotton Programmes
7.2 Rinses of Cotton programmes Drain Recirc. Deterg. Motor movement N.° PHASE Description CYCLE pump Pump Disp Movem. Pause Water fill Level ON (35/15) No movement COT_FIRST_N_R_TURB_LEV 5 min. Maintenance & Refill Time ON (35/15) COT_REF_N_R_LEV Turbidity measurement Time No movement 6 sec. -
Page 20: Cotton / Linen Programmes: 90 Eco, 40-60 "Energy Label" (Without Options)
Cotton / Linen programmes: 90 Eco, 40-60 “energy label” (without options) Recirc. Deterg. Motor movement CYCLE N.° PHASE Description Drain pump Pump Disp Rpm Movem. Pause 60/50 Calibration Level No movem DRAIN Flow calibration Level No movem WATER FILL Maintenance water softener Time 1 min. -
Page 21: Rinses Of Cotton / Linen Programmes: 90 Eco, 40-60 "Energy Label" (Without Options)
Rinses of Cotton / Linen programmes: 90 Eco, 40-60 “energy label” (without options) 7.4.1 For programmes with two rinses Recirc. Deterg. Motor Movement N.° PHASE Description Drain pump CYCLE Pump Disp Movem. Pause Water fill Level ON(35/15) No movem COT_FIRST_E_R_LEV 8 min. -
Page 22: Synthetics Programmes: Cold - 30 - 40 - 50 - 60° (Without Options)
Synthetics programmes: cold – 30 – 40 – 50 – 60° (without options) Recirc. Deterg. Motor Movement CYCLE N.° PHASE Description Drain pump Pump Disp Movem. Pause Level Calibration No movem Drain Level Flow calibration No movem Water fill Maintenance water softener Time 1 min. -
Page 23: Rinses Of Synthetics Programmes
7.6 Rinses of synthetics programmes Recirc. Deterg. Motor Movement CYCLE N.° PHASE Description Drain pump Pump Disp Movem. Pause Water fill Level No movem SYN_FIRST_R_LEV Wait Time No movem 6 sec. 3 min. Maintenance & Refill Time ON (35/15) SYN_REF_R_LEV Time Drain No movem... -
Page 24: Programmes For Delicate Fabrics: Cold - 30° - 40° (Without Options)
7.7 Programmes for delicate fabrics: cold – 30° - 40° (without options) Recirc. Deterg. Motor Movement CYCLE N.° PHASE Description Drain pump Pump Disp Movem. Pause Calibration Level No movem Drain Flow calibration Level No movem Water fill Maintenance water softener Time 1 min. -
Page 25: Wool Programmes: Cold - 30° - 40
7.8 Wool programmes: cold – 30° - 40° Recirc. Deterg. Motor Movement CYCLES N.° PHASE Description Drain pump Pump Disp Movem. Pause Calibration Level No movem Drain Water fill Level No movem SOFT_LEV Maintenance & Refill Time 1 min. Water fill Level No movem WOOL_FIRST_W_LEV... -
Page 26: Hand Wash Programmes: Cold - 30° - 40
7.9 Hand wash programmes: cold – 30° - 40° Recirc. Deterg. Motor movement CYCLE N.° PHASE Description Drain pump Pump Disp Movem. Pause Calibration Level No movem Drain Water fill Level No movem SOFT_LEV Maintenance & Refill Time 1 min. Water fill Level No movem... -
Page 27: Drying Programmes
8 DRYING PROGRAMMES Drying programme for cotton DRYING COTTON (full power) Drain Motor N.° PHASE Function Compart. Temperature Time Notes pump Movem. Pause Drain Level No movem Water fill control Level (10.0) COND Only when Unrolling Time 10 min. autodrying is enabled Not for time- Cooling Temperature... -
Page 28: Drum Movements At Low Speed And During Spin
8.3 Drum movements at low speed and during spin 8.3.1 D55 Delicate movement 8.3.2 N55 Normal movement N 55 8.3.3 E55 Vigorous movement E 55 8.3.4 PWL_1 (wool) Delicate movement PWL_1 8.3.5 PWL_4 (hand wash) Delicate movement PWL_4 SOI/DT 2005-01 dmm 28/67 599 36 82-59... -
Page 29: Cotton/Linen, Synthetics - Intermediate Synthetics Prewash Spin
8.3.6 Cotton/Linen, Synthetics – Intermediate Synthetics Prewash Spin IMP C0 sec. FUCS FUCS FUCS 8.3.7 Cotton/Linen, Intermediate Cotton/Linen Wash Spin IMP_6 FUCS IMP 450 FUCS 1200 8.3.8 Cotton/Linen Final Spin IMPCF_AC FUCS IMP 450 FUCS 1000 1150 1400 1600 8.3.9 Synthetics Final Spin IMP_5 FUCS... -
Page 30: Delicates Final Spin
8.3.10 Delicates Final Spin FUCS IMP 450 FUCS 1000 8.3.11 Hand Wash and Wool Final Spin FUCS IMP 450 FUCS 1000 8.3.12 Easy iron Impulse Cycle EI EASY_IRON_IMP FUCS FUCS FUCS FUCS 8.3.13 Intermediate Spin for Cotton/Linen Super-rinse option FUCS IMP 450 FUCS 8.3.14... -
Page 31: Control Of Water Level In Tub
8.4 Control of water level in tub The water fill is carried out in three ways: level fill: is controlled by the electronic pressure switch level time fill: the duration is calculated by the electronic to fill the set quantity level fill and time fill combined The different levels are determined by the model configuration and depend on the type of tub used. -
Page 32: Technical Characteristics
9 TECHNICAL CHARACTERISTICS EWM2000EVO Electronic control The EWM2000 EVO electronic control consists of a main PCB (1) and a control/display board (2). 9.1.1 Functions of the circuit board PROGRAMM DISPLAY BOARD µP Buzzer SELECTOR Display LEDs Buttons ELECTRICAL µP SENSORS LOADS MAIN CIRCUIT BOARD The circuit board receives signals relative to the cycle settings via the control/display board. - Page 33 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 34: Analogic Pressure Switch (Electronic)
9.2 Analogic pressure switch (electronic) The electronic pressure switch is an analogic device that controls the water level in the tub. It is directly connected to the main electronic PCB. 1. air inlet hose 2. diaphragm 3. coil 4. electronic circuit (oscillator) 5. -
Page 35: Pressure Switch
9.3 Pressure switch 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: anti-boiling safety level • contact 31-32: anti-overflow safety level (not all models) 9.3.1 Pressure switch settings Full (mm) -
Page 36: Anti-Flooding Device
Anti-flooding device 1. PCB 8. Drain pump 9. Anti-overflow pressure switch HV1_S Anti-overflow level sensor The third pressure switch level (if featured) is used as an anti-overflow safety device: if the pressure switch contact should open in the FULL position, the PCB actions the drain pump until the pressure switch returns to the EMPTY position. -
Page 37: Door Interlock
9.6 Door interlock There are two types of door interlock: • voltmetric with PTC: it is always necessary to wait from 1 to 3 minutes before opening the door. • instantaneous: the door can be opened as soon as the cycle ends. 9.6.1 Voltmetric interlock with PTC 1. -
Page 38: Instantaneous Door Interlock
9.6.2 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 39: Detergent Dispenser
Detergent dispenser The EWM 2000 EVO can control different types of dispensers: Detergent dispenser No. of solenoid Type valves 3 compart- Pre-wash/Stains – Wash – Conditioner ments (pre-wash and stain are in alternance) Pre-wash/Stains – Wash – Bleach - Conditioner (the pre-wash/stain and conditioner compartment are linked together with a “intersection”) 4 compart-... -
Page 40: Flow Meter
Flow meter Some models of solenoid valves have a built-in flow sensor which measures the quantity of water in litres that is loaded into the appliance. If the sensor malfunctions, the water level is controlled by the analogue pressure switch. Solenoid valve –... -
Page 41: Drain Pump
Mechanical jamming of 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) will lock the door, start the drain pump and display an alarm. Low water pressure If the flow sensor does not generate a signal during water fill even though power is being applied to the solenoid valve, the cause of this condition may be a closed water tap or clogged filter on the solenoid valve... -
Page 42: Drain Pump
9.11 Drain pump 1. PCB 2. Anti-boiling pressure switch 3. Anti-boiling pressure switch 4. Drain pump 9.12 Aqua Control The Aqua 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 if a leak occurs. -
Page 43: Heating System
9.13 Heating system 1. Main board 2. Anti-boiling pressure switch AE2 3. Anti-boiling pressure switch AE1 4. Heating element 5. NTC temperature sensor The heating element is powered by a relay on the main board through the contacts on the pressure switches, which must be closed on “full”. -
Page 44: Turbidity Sensor
9.14 Turbidity sensor This sensor is installed only on machines equipped with a recirculation pump. 1. Housing 2. Electronic circuit 3. Transparent tube The sensor consists of a transparent tube installed in the water circulation circuit. A diode (4) on the side of the tube emits infrared rays (at a frequency of 2.3 KHz, as generated by the electronic circuit) and a phototransistor (5) on the other side of the tube is hit by the rays. -
Page 45: Motor
9.15 Motor 1. PCB 2. Motor 3. Anti-boiling pressure switch AE1 4. Anti-boiling pressure switch AE2 M = rotor P = motor safety cut-out S = stator T = tachometric generator 9.16 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 46: Fucs" (Fast Unbalance Control System)
9.18 “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 47 • 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 2005-01 dmm 47/67 599 36 82-59...
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Page 48: Drying Circuit
DRYING CIRCUIT 1. Fan 2. Fan motor 3. Drying heater 4. Heater casing 5. Duct 6. Door seal 7. Tub 8. Tube from tub to condenser 9. Drying condenser 10. Coupling 11. Water fill solenoid 12. Condenser water intake and steam vent tube 13. -
Page 49: Temperature Control
10.1 Temperature control The drying temperature is controlled by an NTC sensor positioned on the duct. The heater casing features two safety thermostats (one of which is a manual-reset type). 1. Circuit board 2. Anti-boiling pressure switch AE1 3. Safety thermostat (auto-reset) 4. -
Page 50: Demo Mode
11 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 51: Diagnostics System
12 DIAGNOSTICS SYSTEM 12.1 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 52 Diagnostics phases Displayed Selector position Components actioned Operating conditions Function checked parameters (1) All the LEDs light in sequence. When a button is Operation of the Button pressed, the corresponding Always activated user interface codification LED lights (and the buzzer, if featured, sounds) Door locked Water level below...
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Page 53: Display Board Diagnostics
12.3.1 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 54: Programme Selector
12.3.2 Programme selector In the table are indicated the closures between the contact C6 (common) and the other contacts (C1−C5) of the programme selector in the different positions and the corresponding codification. The code is displayed only in the appliances with display. Closure of selector contacts Display Selector position... -
Page 55: Alarms
13 ALARMS 13.1 Displaying the alarms to the user (for appliances with Display) 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 56: Reading The Alarm Codes
13.2 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. 13.2.1 Displaying the alarm The alarm is displayed by a repeated flashing sequence of the two LEDs (0.4 seconds lit, 0.4 seconds off, with an interval of 2.5 seconds between sequences). -
Page 57: Operation Of Alarms During Diagnostics
13.2.3 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 58: Table Of Alarm Codes
13.6 Table of alarm codes Alarm Description Possible fault Action/machine status Reset Tap closed or water pressure too low; Drain tube improperly positioned; Water fill solenoid valve is defective; Leaks from water Poor water fill before wash cycle Cycle is paused with door locked Start circuit on pressure switch;... - Page 59 Alarm Description Possible fault Action/machine status Reset Sensing circuit on anti-boiling pressure switch 1 Main board defective. Cycle stops with door locked OFF/reset defective Sensing circuit on anti-boiling pressure switch 2 Main board defective. Cycle stops with door locked OFF/reset defective Internal pressure takeoff is clogged (water level Water circuit on pressure switches;...
- Page 60 Alarm Description Possible fault Action/machine status Reset "Sensing" circuit on circulation pump triac faulty Drain, cycle blocked (door open) OFF/reset (input signal to microprocessor always 0V or 5V) Circulation pump faulty Circulation pump; (incongruency between status of "sensing" circuit wiring; Drain, cycle blocked (door open) OFF/reset on circulation pump and status of TRIAC)
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Page 61: Operating Time Counter
14 Operating time counter It is possible to display, with a specific procedure, the operating time of the appliance, which is counted from the first switching on. This option is available only in models with display. The maximum memorization capacity is 6550 operating hours. -
Page 62: Accessing Components
15 ACCESSING COMPONENTS Procedures for accessing specific components on the appliance are described in this section. For information on other procedures, see the general service manual for P6000 washing machines (599 35 23- The electrical components must be serviced by qualified personnel only Unplug the appliance before accessing internal components 15.1 Flow meter If the flow meter malfunctions, the entire... -
Page 63: Turbidity Sensor
15.3 Turbidity sensor Disconnect the connector. Loosen the clamps (shown by the arrows) and remove the tubes from the sensor unit. 15.3.1 Installing the turbidity sensor 1. Connection to recirculation pump. 2. End that is inserted into the bellows around the door. SOI/DT 2004-11 dmm 63/67 599 36 75-68... -
Page 64: Basic Circuit Diagram Wd
BASIC CIRCUIT DIAGRAM WD SOI/DT 2005-01 dmm 64/67 599 36 82-59... -
Page 65: Key For Circuit Diagram Wd
16.1 Key for circuit diagram WD Electrical components on appliance Components on main board 1. Main board 2. Interference filter BEL_TY Condensation solenoid Triac 3. Drain pump DOOR_TY Door interlock Triac 4. Aqua control DRAIN_TY Drain pump Triac 5. ON/OFF switch (built into programme selector) REC_TY Recirculation pump Triac 6. -
Page 66: Basic Circuit Diagram Wm
BASIC CIRCUIT DIAGRAM WM SOI/DT 2005-01 dmm 66/67 599 36 82-59... -
Page 67: Key For Circuit Diagram Wm
17.1 Key for circuit diagram WM Electrical components on appliance Components on main board 1. Main board 2. Interference filter BEL_TY Bleach solenoid Triac 3. Drain pump DOOR_TY Door interlock Triac 4. Aqua control DRAIN_TY Drain pump Triac 5. ON/OFF switch (built into selector) REC_TY Recirculation pump Triac 6.