SERVICE MANUAL WASHING © ELECTROLUX HOME PRODUCTS ITALY S.p.A. Spares Operations Italy Corso Lino Zanussi, 30 I - 33080 PORCIA /PN Fax +39 0434 394096 Edition: 2007-02-06 Washing machines with electronic control system ENV06 Publication no.
SOI/DT 2007-02 dmm 2/56 599 38 60-23
CONTENTS 1 2 Purpose of this manual ....................................................................................................................................5 PRECAUTIONS ...............................................................................................................................................5 2.1 During the delivery....................................................................................................................................6 2.2 During the reparation .
10.9 Universal motor (EWM 2100)..............................................................................................................41 10.9.1 Power supply to motor.....................................................................................................................41 10.10 Three-phase asynchronous motor (EWM2500)..................................................................................41 10.10.1 Power supply to motor ...........................................................
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).
2.1 During the delivery NEVER MOVE the appliance inclining it on the front side 2.
3 TC3 3.1 GENERAL CHARACTERISTICS The ENV060 electronic control system consists of a single PCB, which incorporates the power, control and display (where the LCD display is connected) functions and the programme selector is incorporated in the board. The PCB is mounted on a casing fitted to the control panel.
3.2 CONTROL PANEL 3.2.1 Styling • • • • max.
3.2.2 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. 3.2.3 Programme selector (S1) The selector features 15-21 positions and incorporates the ON/OFF switch. The various positions of the selector may be configured to perform different washing programmes (ex: water level, drum movement, no.
3.2.5 Pushbuttons and LEDs The functions of each button are defined by the configuration of the appliance. • Button no. 1: this button is configurable and is related to LEDs (DL1÷DL5). Depending on the configuration of the appliance it can be connected both to the temperature regulation and the spin speed regulation. Pressing it in sequence, you can choose the different regulation. Depending on the configuration of the appliance it is possible to have different combinations.
• DL16 Door closed: It lights up when the safety device stops the door opening and switches off when it is possible to open it. It flashes when the device is about to unlock the door (with door interlock with PTC, which need one or two minutes to open). 3.2.
ª Intensive cycle indicated for very dirty clothes which needs antistain treatments, soak and prewash. The levels are represented in the following table: COTTONS INTENSIVE NORMAL (basic programme) DAILY LIGHT QUICK SUPER QUICK 3.2.
ª - Washing phases: wash, rinses, drain and spin light up in the selection mode if the programme includes these phases and during the execution of the phase. ª - Wrong choice of an option is displayed by Err, when a function not compatible with the chosen programme is selected. The wrong selection is also signalled by an acoustic alarm. ª - An alarm code, indicates an error of the appliance operation. Simultaneously to the displaying of the code, the START/PAUSE flashes.
4 TC2 4.1 GENERAL CHARACTERISTICS The ENV060 electronic control system consists of a single PCB, which incorporates the power, control and display (where the LCD display is connected) functions and the programme selector is incorporated in the board. The PCB is mounted on a casing fitted to the control panel.
4.2 CONTROL PANEL 4.2.1 Styling • • • • max.
4.2.2 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. 4.2.3 Programme selector (S1) The selector features 15-21 positions and incorporates the ON/OFF switch. The various positions of the selector may be configured to perform different washing programmes (ex: water level, drum movement, no.
4.2.5 Buttons and LCD The functions of each button are defined by the configuration of the appliance. • Button no. 1: TEMPERATURE The temperature set by the programme is the base one, pressing the button it is possible to modify it from a max. to a minimum depending on the programme. Simultaneously the thermometer symbol is modified. • Button no.
4.2.6 Time DRIVEN The “Time driven” has the function to modify the programme setting, according to the type of dirt so as to obtain a reduction or an increase of the washing time, displaying the dirt level through an icon, represented by a t-shirt and the time through the three digits positioned on the right of the LCD display. This variation can be modified through two buttons P8 and P7 positioned besides the display. The symbol remains lit for the whole duration of the programme.
ª Intensive cycle indicated for very dirty clothes which need anti-stain treatments, soak and prewash. The levels are represented in the following table: COTTONS INTENSIVE NORMAL (basic programme) DAILY LIGHT QUICK SUPER QUICK SYNTHETICS --------------NORMAL (basic programme) DAILY LIGHT --------------SUPER QUICK DELICATES --------------NORMAL (basic programme) DAILY LIGHT --------------SUPER QUICK ª Padlock See page 12.
5 DEMO MODE 1. Switch off the appliance. 1. Press and hold down START/PAUSE button and the nearest option button simultaneously (as represented in figure). 2. Holding down both buttons, switch the appliance on by turning the programme selector by three positions clockwise. 3. Hold the buttons down till “dEM” flashes for a short time. 5.1 Exiting DEMO mode To exit the demo cycle, switch the appliance off (programme selector in off/cancel position). 6 DIAGNOSTICS SYSTEM 6.
6.3 Diagnostics phases Irrespective of the type of PCB 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 read the alarms by turning the programme selector clockwise. All the alarms are enabled during the diagnostics cycle. Selector position Components actioned - All the LEDs and symbols light in sequence. - When a button is pressed, the corresponding LED or symbol light.
7 ALARMS 7.1 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 or Display. The alarms displayed to the user are listed below: ª E10 - Water fill difficulty (closed tap) ª E20 - Drain difficulty (dirty filter) ª E40 - Door open They are represented through the flashing of the red LED inside the STARTPAUSE and can be solved directly by the user.
7.2.1 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) • button indicator START / PAUSE with green light → indicates the second digit of the alarm code (internal number of the family) These two LEDs are featured in all models.
7.3 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): → Press and hold down START/PAUSE and the nearest option button (as to enter the DIAGNOSTICS), for at least two seconds: the LEDs initially switch off, and then display the flashing sequence indicating the last alarm.
8 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. This option is available only on models equipped with a display. The unit can count up to a maximum of 6550 hours of operating time.
9 WASHING PROGRAMMES AND OPTIONS 9.1 Programmes The washing programmes can be configured. The basic programmes are listed in the table below.
9.2 Options (for appliances EWM 2100 with universal motor) 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; using the pushbuttons.
Hygienize Grass Soak Rinses Rinses delicates Conditioner Delicate conditioner Drain Spin Delicate spin X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X (*) Economy ¾ Cotton: 90°C = Eco 67°C; 60°C = Energy Label; 50°= Eco 48°C;40°C = Eco 44°C AA ¾ Synthetics: 60-60°C = Eco 40°C Option included in the programme and cannot be deleted X SOI/DT 2007-02 dmm 28/56 Half-load No spin Reduced
9.3 Options (for appliances EWM2500 with asynchronous motor and inverter) 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 different ways: using the programme selector: in this case, the options are configured as special programmes; using the pushbuttons.
Hygienize Grass Express Sensitive plus Rapid Soak Rinses Rinses delicates Conditioner Delicate conditioner Drain Spin Delicate spin X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X (*) Economy ¾ Cotton: 90°C = Eco 67°C; 60°C
9.3.
9.4 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. → Stops the appliance with water in the tub before the final rinse. → Eliminates the buzzer (if configured) → 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) Reduction for COTTON (rpm) Reduction for ALL OTHER CYCLES (rpm) 600 450 450 700 450 450 800 450 450 900 1000 1100 1200 1300 1400 1550 450 500 550 600 650 700 750 450 450 450 450 450 450 450 • No spin → Eliminates all the spin phases. → If selected, three rinses are added in the COTTON cycle and one in the SYNTHETICS cycle. • Intensive → Performs a specific intensive cycle.
10 TECHNICAL CHARACTERISTICS 10.1 Control system memory 10.1.1 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. Power Failure and Machine status μP External serial port (asynchronous FLASH RAM Configuration of the appliance Description of the cycle 10.1.
Ö 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 - Spin - “IF” conditions (options, temperatures etc.
10.2 Door interlock There are two types of door interlock: • voltmetric with PTC • instantaneous 10.2.1 Voltmetric interlock with PTC 10 Suppressor 19 Door interlock 20 PCB ON/OFF = Main switch (programme selector) 10.2.1.
10.2.2 Instantaneous door interlock • With this safety device it is possible to open the door immediately after the end of the cycle. 9 Door interlock 19 Suppressor 20 PCB ON/OFF = Main switch (programme selector) 10.2.2.1 Operating principle ª 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.
10.3 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. 3 5 6 7 20 Analogue pressure switch Prewash electric valve Wash electric valve Bleach electric valve PCB 10.
10.5 15 16 20 Drain pump Drain pump Thermal protector PCB The PCB powers the drain pump via a triac as follows: - 10.6 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). Recirculation pump (if featured) On jetsystem models, the main board powers the recirculation pump through a triac.
10.7 Heating 2 13 14 K1 NTC temperature sensor Heating element (with thermal fuses) PCB Relay 1. 2. 3. 4. Tubular casing Thermal fuses NTC Sensor 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.
10.9 11 12 13 14 20 Universal motor (EWM 2100) Tachometric generator Stator Protector Rotor PCB 10.9.1 Power supply to motor The PCB powers the motor via a triac. The direction of rotation is reversed by switching of the contacts on the two relays (K2-K3), which modify the connection between the rotor and the stator. In certain models, a third relay (K4) is used to power the stator (full or half field) according to the spin speed.
10.11 Anti-foam control system The anti-foam control procedure (if featured) is performed via the electronic 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; the drain pump continues to operate and, when the contact returns to EMPTY, the spin phase is resumed.
10.12 “FUCS” (Fast Unbalance Control System) rpm The control procedure for unbalanced loads is performed dynamically, before each spin cycle, as follows: ª The phase begins at a speed of 55 rpm; the speed can never fall below this threshold, otherwise the check is repeated. ª At intervals of 300 ms, the balance is calculated and compared with predetermined limits.
• Balancing in the available longer interval 1 2 Phase 1 2 3 4 5 6 7 • 3 4 5 Unbalancing index 0 1 2 3 1 2 3 6 7 Time-out (sec) 60 120 60 90 120 90 90 Unbalancing after all phases In this case the spin (or impulse) is not performed.
10.13 Table of alarm codes Alarm E11 E13 E21 E23 E24 E31 E32 E35 E38 E3A E41 E42 E43 E44 E45 E51 E52 E53 E54 E57 Possible fault Tap closed or water pressure too low; Drain tube improperly positioned; Water fill solenoid valve is faulty; Leaks from water circuit on pressure switch; Pressure switch faulty; Wiring faulty; PCB faulty. Drain tube improperly positioned; Water pressure too low; Water fill solenoid valve is faulty; Water circuit on pressure switch is leaking/clogged; Pressure switch faulty.
Alarm E5F Possible fault Motor defective; Wiring defective on inverter for motor, inverter board defective, abnormal motor operation (motor overloaded). Motor defective; Wiring defective on inverter for motor; Inverter board defective. Inverter board defective. NTC open (on the inverter board).
Alarm Possible fault Action/machine status Reset EH1 Power supply problems (incorrect / disturbance); PCB faulty. Wait for frequency nominal conditions. OFF/ON EH2 Power supply problems (incorrect / disturbance); PCB faulty. Wait for voltage nominal conditions. OFF/ON EH3 Power supply problems (incorrect / disturbance); PCB faulty. Wait for voltage nominal conditions. OFF/ON EHE EHF Wiring faulty; PCB faulty. PCB faulty. Safety drain cycle – Cycle stopped with door open.
10.
• Key to diagram with UNIVERSAL MOTOR EWM2100 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22.
10.
• Key to diagram with THREE-PHASE ASYNCHRONOUS MOTOR EWM2500 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 15. 16. 17. 18. 19. 20. 23. 24.
11 ACCESSIBILITY 11.1 To the electronic control system 11.1.1 Work top a. Remove the two rear screws, push the top panel towards the rear and release from the cabinet. 11.1.2 Control panel b b. c. Press the drawer lock. Extract. c d. Remove the screw which secures the control panel to the dispenser. d e e. Remove the clamp which secures the wiring to the board casing. f. Release the wiring from the clamp under the dispenser. f After releasing the wiring from the fixing hooks.
g g. Loosen the screws which secure the cross-member to the cabinet. h h. Release the hook which secures the dispenser to the cross-member. h i i. Lift the control panel up. j j. k. Loosen the screws which secure the cross-member to the control panel. Release the hook which secures the control panel to the crossmember. k m l. Turn and insert a protection between the control panel and the surface which you lean it on to avoid damaging it. m.
o. Before mounting the new board extract the knob pushing the hooks indicated by the arrow as represented in figure. While reassembling, repeat the same operations in reverse order and pay attention to the correct positioning of the knob. 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. f. Extract the door interlock.
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 c. Turn the cap left to align the two references: (the arrow in the cap and the reference point in the filter body), so as to allow extracting the filter. d. Extract the filter.
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.
