Electrolux EWM1000 Service Manual
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Electrolux EWM1000 Service Manual

Electrolux EWM1000 Service Manual

Washing machines with ewm1000 electronic control system
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 ELECTROLUX ZANUSSI S.p.A.
Spares Operations Italy
Corso Lino Zanussi, 30
I - 33080 PORCIA /PN (ITALY)
Fax +39 0434 394096
Edition: 2002-07-24
SOI/DT 2002-07 eb
Publication no.
599 35 36-69
EN
1

SERVICE MANUAL

WASHING
Washing machines with
EWM1000 electronic
control system:
Technical and functional
characteristics
Production:
ESA – Alcala de Henares (ES)
599 35 36-69

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Summary of Contents for Electrolux EWM1000

  • Page 1: Service Manual

    SERVICE MANUAL WASHING Washing machines with EWM1000 electronic  ELECTROLUX ZANUSSI S.p.A. control system: Publication no. Spares Operations Italy Corso Lino Zanussi, 30 Technical and functional I - 33080 PORCIA /PN (ITALY) 599 35 36-69 characteristics Fax +39 0434 394096 Production: ESA –...
  • Page 2 SOI/DT 2002-07 eb 599 35 36-69...

  • Page 3: Table Of Contents

    Table of contents Purpose of this manual......................... 5 GENERAL CHARACTERISTICS......................6 CONTROL PANEL (horizontal pushbuttons)..................7 Configuration of control panel ....................... 7 3.1.1 Programme selector (S1) ......................8 3.1.2 Secondary selector (S2)......................8 Pushbuttons and LEDs ......................... 9 3.2.1 Wash phase LEDs ........................9 WASHING PROGRAMMES AND OPTIONS ..................
  • Page 4 6.5.2 Water fill without wash load....................30 Water fill system ......................... 31 6.6.1 Calculation of flow rate......................31 Detergent dispenser ........................32 6.7.1 Operating principle......................... 33 Drain pump..........................34 Anti-overflow device ........................34 6.10 Heating............................35 6.10.1 Heating element........................35 6.10.2 NTC temperature sensor......................

  • Page 5: Purpose Of This Manual

    • technical and functional characteristics • access to the electronic control system For detailed information concerning diagnostics and alarms, refer to the following manual: “EWM1000 electronic control system: guide to diagnostics procedures”. SOI/DT 2002-07 eb 599 35 36-69...

  • Page 6: General Characteristics

    PCB are produced: one with horizontal pushbuttons and one with vertical pushbuttons. The EWM1000 electronic control system may be fitted to the following appliances: ♦ front-loading washing machines manufactured in Spain (Alcala de Henares) (ESA) ♦ front-loading washing machines manufactured in Germany (Nürnberg) (DGN) ♦...

  • Page 7: Control Panel (Horizontal Pushbuttons)

    3 CONTROL PANEL (horizontal pushbuttons) • maximum 5 pushbuttons • maximum 11 LEDs • 16-position programme selector • power switch incorporated in the programme selector • version with 6-position secondary selector (some models) 3.1 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.

  • Page 8: Programme Selector (S1)

    3.1.1 Programme selector (S1) The selector features 16 positions and incorporates the ON/OFF switch. The various positions of the selector may be configured to perform different washing programmes; in the first position, the appliance is switched off and the current programme is cancelled. For each programme, the compatible options and other parameters are defined.

  • Page 9: Pushbuttons And Leds

    3.2 Pushbuttons and LEDs The functions of each button are defined by the configuration of the appliance. • Button 1: This pushbutton is connected to two LEDs (11 – 12) and, if used, it may be configured for selection of one or two options; in the latter case, the two options cannot be selected at the same time (only one at a time).

  • Page 10: Washing Programmes And Options

    4 WASHING PROGRAMMES AND OPTIONS 4.1 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) 87 / 82 53 (*) Cotton 450/650/850/1000 50/40E 44 (*) cold 60/50E Synthetics...

  • Page 11: Options

    4.2 Options The table below lists the possible options of the washing programmes, the compatibility of the various options and with the cycle, and when the options can be selected or modified. The options can be selected in three different ways: by using the programme selector: in this case, the options are configured as special programmes.

  • Page 12: Description Of Options

    4.3 Description of options • Night cycle: → Eliminates all spin phases and adds three rinses in COTTON cycles and one rinse in SYNTHETICS cycles. → Stops the appliance with water in the tub before the final rinse. → Switches off the buzzer (if featured and configured). →...

  • Page 13: Temperature Adjustment

    • Rinse hold: → Stops the appliance with water in the tub before the final spin. → To drain the water, reset the programme and then select a drain or spin cycle. • Reduced spin speed: → Reduces the speed of all spins as shown in the table: Maximum spin speed (rpm) 900 1000 Reduced speed for COTTON (rpm)

  • Page 14: Modification Of The Spin Speed

    4.3.2 Modification of the spin speed: → Reduces the speed of all spin cycles as shown in the table. → The last position can be used for NO SPIN, RINSE HOLD or NIGHT CYCLE. → If the NO-SPIN option is selected, three rinses are added in the COTTON cycle and one in the SYNTHETICS cycle.

  • Page 15: Buzzer

    4.3.3 Buzzer The buzzer (if featured) is incorporated in the PCB, but operates only if the appropriate configuration code is entered. • Switching off the buzzer The buzzer can be switched off by pressing a combination of two buttons simultaneously for 5 seconds. This option depends on the configuration;...

  • Page 16: Washing Programmes

    5 WASHING PROGRAMMES 5.1 Normal (consumer) Cotton / Linen Cycles: cold - 30-40-50-60-90° (without options) Time / Heat. Phase Function Movement Notes °C control Delay Delayed start Delay time No Mov VAE + 2”+ Drain Drain No Mov 6” pause Water fill P1 + QPW1 (*) D55 from full...

  • Page 17: Cotton / Linen Cycles: 90 Eco, 60 - 40/50 "Energy Label" (Without Options)

    5.2 Cotton / Linen Cycles: 90 Eco, 60 - 40/50 “energy label” (without options) Heat. Time / Phase Function Movement Notes °C control Delay Delayed start Delay time No Mov VAE + 2”+ Drain Drain No Mov 6” pause Water fill P1 + QPW1 (*) D55 from full Cold wash...

  • Page 18: Normal (Consumer) Synthetics Cycles: Cold - 30 - 40 - 50 - 60° (Without Options)

    5.3 Normal (consumer) Synthetics Cycles: cold - 30 - 40 - 50 - 60° (without options) Heat. Time / Phase Function Movement Notes °C control Delay Delayed start Delay time No Mov VAE + 2”+ Drain Drain No Mov 6” pause Water fill P1 + QPW1 (*) D 55 from full...

  • Page 19: Delicates Cycles: Cold - 30° - 40° (Without Options)

    5.4 Delicates Cycles: cold – 30° - 40° (without options) Heat. Time / Phase Function Movement Notes °C control Delay Delayed start Delay time No Mov VAE + 2”+ Drain Drain No Mov 6” pause Water fill P1 + QPW1 (*) D55 from full Cold wash 5’...

  • Page 20: Wool Cycles: Cold - 30° - 40

    5.5 Wool Cycles: cold - 30° - 40° Heat. Time / Phase Function Movement Notes °C control Delay Delayed start Delay time No Mov VAE + 2”+ Drain Drain No Mov 6” pause Wool water fill P1 + Qwo (*) Cold wash 1’...

  • Page 21: Drum Movements At Low Speed And During Spin

    5.7 Drum movements at low speed and during spin 5.7.1 D55 Delicate movement 5.7.2 N55 Normal movement N 55 5.7.3 E55 Vigorous movement E 55 5.7.4 E50 Vigorous movement E 55 5.7.5 PWL_1 (wool) Delicate movement PWL_1 5.7.6 PWL_4 (hand wash) Delicate movement PWL_4 SOI/DT 2002-07 eb 599 35 36-69...

  • Page 22: C0 Cotton/Linen, Synthetics - Intermediate Synthetics Pre-Wash Spin

    5.7.7 C0 Cotton/Linen, Synthetics – Intermediate Synthetics Pre-wash Spin sec. FUCS FUCS FUCS 5.7.8 C1 Cotton/Linen Wash Spin C1 (wash) FUCS FUCS imp FUCS 5.7.9 C2 Cotton/Linen Intermediate Spin C2 (intermediate) FUCS FUCS imp FUCS 1000 5.7.10 COT_CF Cotton/Linen Final Spin COT_CF (cotton final) FUCS FUCS imp...

  • Page 23: Del_ Cf Delicates Final Spin

    5.7.12 DEL_ CF Delicates Final Spin CF (delicates final) FUCS FUCS imp FUCS 5.7.13 WOOL_CF Hand Wash and Wool Final Spin CF (wool final) FUCS FUCS imp FUCS 1000 5.7.14 “Spin” Cycle Spin Cycle FUCS FUCS imp FUCS 1000 1000 1000 5.7.15 Easy iron Impulse Spin Cycle EASY_IRON_IMP...

  • Page 24: Control Of Water Level In The Tub

    5.8 Control of water level in the tub The water fill is carried out in two phases: • level fill: is controlled by the closure of 1st level pressure switch in full position • time fill: the duration is calculated by the electronic to fill the set quantity. The different levels are determined by the model configuration and depend on the type of tub used.

  • Page 25: Profile Of Cotton 60 Economy / Energy Label Cycle

    5.9 Profile of COTTON 60 Economy / Energy label cycle rinse P1+Qe water fill 2nd rinse P1+ Qwe Refill water 3rd rinse Movement for 5 minutes C1 wash spin Movement for 35 minutes C2 intermediate spin Heating up to 53°C CF final spin 5.10 Profiles of COTTON 60°...

  • Page 26: Technical Characteristics

    6 TECHNICAL CHARACTERISTICS 6.1 Control system memory 6.1.1 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 27: Eeprom

    6.1.4 EEPROM The EEPROM contains data of various types: Power failure, i.e. the information necessary to restart the appliance in the event of a power failure: Selected cycle and options Current phase and sub-phase Machine status, used to perform special cycles such as: Electrical test (used in the assembly line) Continuous cycles (used in the factory workshops) Machine configuration: the data contained in the EEPROM define the characteristics of the model and...

  • Page 28: Door Interlock

    6.2 Door interlock There are two types of door interlock: • voltmetric with PTC: it is always necessary to wait from 1 to 2 minutes from the end of the cycle before opening the door. • instantaneous: the door can be opened as soon as the cycle ends. 6.3 Voltmetric interlock with PTC 10 Door interlock 11 Suppressor...

  • Page 29: Instantaneous Door Interlock

    6.4 Instantaneous door interlock 1. PTC protecting the solenoid 2. Solenoid 3. Levers Door interlock Suppressor 4. Cam (“Door locked” pilot lamp) 5. Bimetal PTC 6. Main switch contacts ON/OFF = ON/OFF switch (Programme selector) 7. Pawl 6.4.1 Operating principle •...

  • Page 30: Control Pressure Switch For Water Level In The Tub

    6.5 Control pressure switch for water level in the tub Control of the water level is performed by a 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 (some models may not feature it) 6.5.1 Pressure switch settings Full (mm)

  • Page 31: Water Fill System

    6.6 Water fill system The solenoid valves are powered by the PCB via two triacs. The status of the pressure switch (empty/full) is detected by two “sensing” lines. 1. PCB 2. Anti-boiling level 3. 1st level 4. Pre-wash solenoid valve 5.

  • Page 32: Detergent Dispenser

    6.7 Detergent dispenser 1. Fill hose 2. Gasket 3. Cold water fill solenoid 4. Hose 5. Nozzle 6. Detergent dispenser duct 7. Detergent compartment 8. Steam venting hose (some models) 9. Detergent drawer 10. Siphon for additives 11. Detergent intake tub 12.

  • Page 33: Operating Principle

    6.7.1 Operating principle Water fill to pre-wash compartment (pre-wash solenoid) • This solution is used in models with 3-compartment detergent drawers. The detergent in compartment “a” is introduced at the beginning of the pre-wash phase. • In certain models featuring the “stains” option, compartment “a”...

  • Page 34: Drain Pump

    6.8 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 6.9 Anti-overflow device 1.

  • Page 35: Heating

    6.10 Heating 1. PCB 2. Anti-boiling pressure switch 3. 1st level pressure switch 6. Heating element 7. 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 36: Motor

    6.11 Motor 1. PCB 2. Anti-boiling/anti-foam pressure switch 13. Motor M = Rotor P = Motor safety cut-out S = Stator T = Tachometric generator AB_S Anti-boiling/anti-foam level sensor 6.11.1 Power supply to motor The PCB powers the motor via a triac. The direction of rotation is reversed by switching of the contacts on two relays (K2-K3), which modify the connection between the rotor and the stator.

  • Page 37: 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: • An initial phase is performed in which the direction of rotation of the drum is alternated at 55 rpm. •...
  • Page 38 Balancing after two attempts: Low speed FUCS phase 0 FUCS phase 1 FUCS phase 2 Balancing after the third phase Normal spin FUCS phase 0 with spin pulse FUCS phase 1 FUCS phase 2 FUCS phase 3 with spin pulse FUCS phase 1 FUCS phase 2 FUCS phase 3...

  • Page 39: Diagnostics System

    7 DIAGNOSTICS SYSTEM 7.1 Access to diagnostics mode 1. Switch off the appliance. 2. Press and hold down START/PAUSE and any one of the option buttons simultaneously. 3. Holding down both buttons, switch the appliance on by turning the programme selector one position to the right (clockwise).

  • Page 40: Diagnostics Phases

    7.3 Diagnostics phases Irrespective of the type of PCB (i.e. with horizontal or vertical buttons) and the configuration of the programme selector it is possible, after entering diagnostics mode, to perform diagnostics on the operation of the various components and to display the alarms by turning the programme selector clockwise. All the alarms are enabled during the diagnostics cycle.

  • Page 41: Alarms

    8 ALARMS 8.1 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 alarms are displayed to the user, with the exception of: E61 (insufficient heating during the washing phase), E83 (error in selector reading) The alarms are enabled during the execution of the washing programme, with the exception of alarms...

  • Page 42: Reading The Alarm Codes

    8.2 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. 8.2.1 Displaying the alarm The alarm is displayed by a repeated flashing sequence of the two LEDs (0.4...

  • Page 43: Operation Of Alarms During Diagnostics

    8.2.3 Operation of alarms during diagnostics All alarms are enabled during the diagnostics phase of the components. When the programme selector is turned from one test phase to another, the appliance exits the alarm condition and performs the phase selected (if the alarm condition does not occur again). 8.3 Notes concerning certain alarm codes Configuration alarms E93-E96: If these alarms are generated (when the appliance is switched on), operation of the appliance is blocked and all the LEDs light.

  • Page 44: Table Of Alarm Codes

    8.6 Table of alarm codes Alarm Description Possible fault Action/machine status Reset Tap closed or water pressure insufficient; drain hose incorrectly positioned; water fill solenoid faulty; leaks from the hydraulic Difficulties in water fill for washing Cycle paused Start circuit of the pressure switch; pressure switch faulty; wiring faulty;...
  • Page 45 Alarm Description Possible fault Action/machine status Reset NTC sensor faulty; heating element faulty; wiring faulty; PCB Insufficient heating during washing The heating phase is skipped faulty. NTC sensor faulty; heating element faulty; wiring faulty; PCB Safety drain cycle – Cycle stopped Overheating during washing faulty.

  • Page 46: Basic Circuit Diagram

    9 BASIC CIRCUIT DIAGRAM 9.1 Version with instantaneous door interlock SOI/DT 2002-07 eb 599 35 36-69...

  • Page 47: Version With Door Interlock With Ptc

    9.2 Version with door interlock with PTC SOI/DT 2002-07 eb 599 35 36-69...

  • Page 48: Key To Circuit Diagram

    9.3 Key to circuit diagram Components in the appliance Components of the PCB 1. Electronic board DOOR_TY Interlock triac 2. Suppressor DRAIN_TY Drain pump triac 3. Door interlock Heating element relay 4. 1st level pressure switch Motor relay: clockwise rotation 5.

  • Page 49: Access To The Electronic Control System

    10 ACCESS TO THE ELECTRONIC CONTROL SYSTEM 10.1.1 Top panel a. Remove the two rear screws, push the top panel towards the rear and release it from the cabinet. 1. Electronic control system 2. Control panel 3. Solenoid valve 4. Detergent dispenser 5.

  • Page 50: Electronic Control Board

    10.1.3 Electronic control board 1. PCB assembly + casing 2. Cover for connectors 3. Spindle of programme selector knob 4. Spindle of secondary selector knob 5. Pushbutton support panel 6. Pushbutton 7. LED diffuser a. Remove the control panel. b. Detach the cover for the connectors from the control board casing.

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