Electrolux NEAT Service Manual
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Electrolux NEAT Service Manual

Electrolux NEAT Service Manual

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ELECTROLUX ZANUSSI S.p.A.
Corso Lino Zanussi,30
I - 33080 PORCIA /PN (ITALY)
Tel +39 0434 394850
Fax +39 0434 394096
TSE-P
Edition: 04.2000
TSE-P 04.00 EB
Publication no.
599 34 22-16
EN/SERVICE/EB
1/50
SERVICE MANUAL
WASHING
"NEAT"
WASHING MACHINES
WITH EWM2000
ELECTRONIC CONTROL
Production: Porcia/PN (IT)
599 34 22-16

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  • Page 1 SERVICE MANUAL WASHING “NEAT” WASHING MACHINES Publication no. ELECTROLUX ZANUSSI S.p.A. Corso Lino Zanussi,30 WITH EWM2000 599 34 22-16 I - 33080 PORCIA /PN (ITALY) ELECTRONIC CONTROL Tel +39 0434 394850 Fax +39 0434 394096 EN/SERVICE/EB Production: Porcia/PN (IT) TSE-P Edition: 04.2000...

  • Page 2: Table Of Contents

    CONTENTS GENERAL CHARACTERISTICS .............. page 3/50 CONTROL PANEL ..................page 4/50 Operation of the buttons................page 5/50 Display......................page 10/50 WASHING PROGRAMMES ..............page 12/50 Programme table legend ................page 12/50 60º cotton cycle (AC motor) ............... page 14/50 60º cotton cycle (DC motor) ............... page 15/50 60º...

  • Page 3: General Characteristics

    GENERAL CHARACTERISTICS Design: The cabinet is completely new, and is distinguished by the rounded front panel. Inclined tub and bellows seal: The tub and the bellows seal are inclined at an angle of approximately 20°. The capacity of the drum is 46 litres (G20). Large porthole door: The porthole door is larger than that fitted to current models, and can be opened to an angle of 180º.

  • Page 4: Control Panel

    CONTROL PANEL The control panel fitted to the appliance may be different depending on: Þ the control/display board (2 versions) Þ the different design of the panel (on the number of buttons, LEDs) Þ the different configuration of the buttons “FABRICS”...

  • Page 5: Operation Of The Buttons

    1. “FABRICS” button Press this button to select the washing programme suitable for the fabrics to be washed. The LED corresponding to the selected washing programme lights. The machine proposes the standard programme for the type of fabric selected; a temperature and the maximum spin speed for the selected programme are displayed, as well as the normal soiling level.
  • Page 6 “SPINNING” button Press this button to reduce the speed of the intermediate and final spin cycles as shown in the table below. This button is effective only after the type of fabric has been selected; the spin speed can be modified until the end of the rinses. LED11 LED12 LED13...
  • Page 7 4,5,6“OPTIONS” buttons The number and type of OPTIONS buttons vary according to the model. All OPTIONS buttons are effective during the programme selection phase, but only after the type of fabric has been selected. After the “START/PAUSE” button has been pressed, the options can generally be selected up until the start of the phase whose parameters are to be modified.
  • Page 8 “INTENSIVE” / “HEAVY SOIL” button This option can be selected during the entire duration of the washing programme, and is available only in cycles for COTTON and SYNTHETICS. This option increases the phases of drum movement after the heating phases. The INTENSIVE / HEAVY SOIL option cannot be selected together with the STAINS, QUICK CYCLE and ECONOMY options.
  • Page 9 7. “START/PAUSE” button START: After selecting the programme and the desired options, press the START button to start the programme. The LED positioned above the button will cease flashing and remain lit. If a delayed start time has been selected, the countdown will commence; the countdown will be shown on the display.

  • Page 10: 11. Display

    9. “DELAYED START” button This button can be used to delay the start of the programme for up to 24 hours. The selected delay time is shown on the display for approximately 5 seconds, after which the duration of the programme is displayed. The DELAYED START option must be selected after selecting the programme and before pressing START/PAUSE.
  • Page 11 Þ Rinse hold: the appliance stops with water in the tub at the end of programmes for which the RINSE HOLD option has been selected; the display shows a zero (fixed, not flashing). Þ End of cycle: indicated by a zero (flashing) and, at the same time, the door pilot lamp switches off.

  • Page 12: Washing Programmes

    WASHING PROGRAMMES (SEQUENCE CHARTS) KEY TO PROGRAMMES Description Calibration Drain sub-phase for calibration of the electronic pressure switch Levels Level of water in the tub Control level for circulation pump Control level for drain pump Control level for motor Pumps Pump off Pump on Pump on from one level of pressure switch...
  • Page 13 SE Movement: VT movement during rinses in "jetsystem total exchange" COTTON programmes (virtual tank): During these phases, in which the motor rotates at high speed, if the electronic pressure switch detects that the water in the tub falls below a certain level, the following operations are performed: spin at 470 rpm (VT_MOV_CODE) to remove the water from the fabrics and therefore to increase the level in the tub.

  • Page 14: 60º Cotton Cycle (Ac Motor)

    Cotton 60 JETSYSTEM - AC motor (G46l, intermediate spin 850 - 1000) Step PHASE Description Levels (mm H20) Rec. Drain Water inlet Movement Refilling Temp. Time Time to n.° pump pump valves °C type code type wl WASH CALIBRATION 35/15 35/15 35/15 35/15 Motor Stopped...

  • Page 15: 60º Cotton Cycle (Dc Motor)

    Cotton 60 JETSYSTEM - DC motor (G46l - intermediate spin 850 1000) Step PHASE Description Levels (mm H20) Rec. Drain Water inlet Movement Refilling Temp. Time Time to n.° pump pump valves °C type code type wl WASH CALIBRATION 15/5 15/5 15/5 15/5...

  • Page 16: 60º Synthetics Cycle

    Synthetics 60 JETSYSTEM (G46l) Step PHASE Description Levels (mm H20) Rec. Drain Water inlet Movement Refilling Temp. Time Time to n.° pump pump valves °C type code type wl WASH CALIBRATION 35/15 * 35/15 * 35/15* 35/15* Motor Stopped Tout 10' 0.00.00 WATER LOAD 50/15 **...

  • Page 17: 40º Handwash Cycle

    Handwash 40 JETSYSTEM (G46l) Step PHASE Description Levels (mm H20) Rec. Drain Water inlet Movement Refilling Temp. Time Time to n.° pump pump valves °C type code type wl WASH CALIBRATION 35/15 * 35/15* 35/15* 35/15* Motor Stopped Tout 10' 0.00.00 WATER LOAD 50/15 **...

  • Page 18: Fucs" (Fast Unbalance Control System)

    “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. At intervals of 400 ms, the balance is calculated and compared with predetermined limits.
  • Page 19 Load balanced after few attempts: A: low speed B: FUCS phase 1 C: normal spin Load balanced after second phase: A: low speed B: FUCS phase 1 with pulse at 470 rpm C: low speed D: FUCS phase 2 E: normal spin Load balanced after second phase and anti-foam control function: A: low speed...

  • Page 20: Spin Cycles

    SPIN CYCLES IMP_C0 spin: pre-wash - COTTONS and SYNTHETICS, penultimate rinse - SYNTHETICS IMP5 spin: final - SYNTHETICS IMP7 spin: final - DELICATE FABRICS TSE-P 04.00 EB 20/50 599 34 22-16...
  • Page 21 IMP4 spin: final - WOOL IMP6 spin: first intermediate spin - rinses – COTTON (maximum speed can be configured) IMP6-RINSE spin: intermediate rinses COTTON (maximum speed can be configured) TSE-P 04.00 EB 21/50 599 34 22-16...
  • Page 22 IMPCF_1_AC spin: final – COTTON (AC motors) IMPCF_1_AC spin: final – COTTON (DC motors) TSE-P 04.00 EB 22/50 599 34 22-16...

  • Page 23: Structural Characteristics

    STRUCTURAL CHARACTERISTICS 1. Control panel 9. Temperature sensor 2. Front cabinet shell 10. Motor 3. Plinth 11. Drive belt 4. Main electronic board 12. Drum pulley 5. Carboran tub 13. Rear counterweight 6. Pressure switch tubes 14. Solenoid valve 7. Pressure chamber 15.

  • Page 24: Hydraulic Circuit

    HYDRAULIC CIRCUIT The hydraulic circuit has been modified with respect to current production models. New filter body New pressure chamber New detergent drawer (similar to those fitted to other models with EWM2000 control system). FILTER BODY . Filter drain cap 2.

  • Page 25: Technical Characteristics

    TECHNICAL CHARACTERISTICS EWM 2000 ELECTRONIC CONTROL UNIT 1. Main PCB 2. Control/Display Board CONTROL/DISPLAY BOARD Microprocessor MAIN BOARD ELECTRICAL SENSORS LOADS Microprocessor The main PCB performs the following functions: acquisition of the wash cycle settings via the control/display board. control of the water level in the tub via the electronic pressure switch and the safety pressure switch. control of the temperature of the washing solution via an NTC sensor.

  • Page 26: Microprocessor Memory

    MICROPROCESSOR MEMORY (MAIN PCB) GENERAL INSTRUCTIONS PROGRAMME VARIABLES POWER FAIL MACHINE & CYCLE CONFIGURATION EEPROM MACHINE PARAMETERS STATUS 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.

  • Page 27: Electronic Pressure Switch

    ELECTRONIC PRESSURE SWITCH The electronic pressure switch is an nalogic 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 28: Instantaneous Door Safety Device

    INSTANTANEOUS DOOR SAFETY DEVICE Certain models are fitted with an instantaneous door safety device; this means that the door can be opened as soon as the drum stops rotating. 1. PTC solenoid protector 2. Solenoid 3. Lever mechanism 4. Cam 5.

  • Page 29: Detergent Dispenser

    DETERGENT DISPENSER Water is ducted into the detergent dispenser by a solenoid valve with one inlet and two or three outlets. Some models are fitted with a second solenoid valve for hot water fill. The same detergent dispenser is used in all models; the only difference lies in the water intake nozzle.
  • Page 30 Water fill to conditioner compartment (pre-wash and wash solenoids) Water fill to bleach compartment (bleach solenoid) Hot water fill (hot water/wash solenoids) TSE-P 04.00 EB 30/50 599 34 22-16...

  • Page 31: Power Supply To Motor

    Power supply to the motor The main PCB powers the motor directly via a TRIAC. Reversal of the direction of the motor is effected by two relays that vary the connection between the rotor and the stator. A third relay powers the stator in half- or full-range operation, depending on the spin speed. The speed of the motor is controlled by a signal received from the tachometric generator.

  • Page 32: Recirculation Pump

    Circulation pump In Jetsystem models, the circulation pump is powered directly by the main PCB via a TRIAC Heating The heating element is powered directly by the main PCB via a relay. As a safety feature, a traditional dual-level pressure switch (anti-boiling 1 and anti-boiling 2) is connected in series to the heating element.

  • Page 33: Diagnostic And Configuration Systems

    DIAGNOSTICS / CONFIGURATION SYSTEM ACCESS TO THE DIAGNOSTICS / CONFIGURATION SYSTEM Using a single procedure, it is possible to access both the diagnostics and configuration systems. After accessing this function, the following operations can be performed: control of the operation of each of the components in the appliance. analysis of alarm conditions configuration of the main PCB To access the system:...

  • Page 34: Diagnostics System

    DIAGNOSTICS SYSTEM The diagnostics system can be used to check the correct operation of all the components in the washing machine. After accessing the diagnostics routine, the display board is checked for correct operation. All the LEDs (and, if featured, the display) light in sequence. Press the FABRICS button to pass to the subsequent phase of the test (LED L1 lights).

  • Page 35: Display Board Diagnostics

    DISPLAY BOARD DIAGNOSTICS After accessing the diagnostics system, the display board is checked for correct operation. All the LEDs (and, if featured, the display) light in sequence. When the various buttons are pressed, the corresponding LEDs light. The display shows a binary code corresponding to the code of the button pressed and the buzzer sounds.

  • Page 36: Diagnostics Cycle

    DIAGNOSTICS CYCLE When the FABRICS or TEMPERATURE buttons are pressed, the system passes to the previous or subsequent phase of the diagnostics cycle. The LED corresponding to the phase of the diagnostics cycle lights. Function Components Operating Parameters tested actioned conditions displayed Water fill to wash...

  • Page 37: Alarms

    ALARMS The electronic control unit detects and recognizes any malfunctions in the operation of the appliance, in which case an alarm condition is generated. Alarm conditions may be of three types: cycle paused cycle blocked current phase skipped Only four alarm conditions are normally displayed to the user: problems with water fill problems with drain door open...

  • Page 38: Reading The Last Alarm

    READING THE LAST ALARM CONDITION The diagnostics system makes it possible to identify the last alarm condition which occurred during the operation of the appliance. To read this alarm condition, after accessing the diagnostics system (see "Access to the diagnostics / configuration system), press the FABRICS or TEMPERATURE buttons until LED L9 lights.

  • Page 39: Alarm Codes

    ALARM CODES 0:LED off 1: LED flashing Alarm Description of fault User Effect Possible causes code L26÷29 L30÷33 code Problems with water fill in wash phase Cycle PAUSED Tap closed or mains pressure insufficient; solenoid (maximum 10 minutes for each fill phase) valve;...
  • Page 40 Pressure chamber blocked Heating phase Pressure switch hydraulic circuit; pressure switches, (water level does not vary for at least 30 sec. during skipped motor drive belt broken drum rotation) Door open Cycle paused Door open; door delay interlock; wiring; main PCB (door delay interlock does not close after 15 seconds) Problems with door closure...
  • Page 41 Insufficient heating during washing Heating phase NTC sensor incorrectly calibrated; heating element; (maximum heating time exceeded) skipped wiring; main PCB Overheating during washing Drain, cycle Heating element (earthed); NTC sensor faulty; wiring; (temperature >88°C for more than 5 minutes) blocked main PCB Power relay to heating element faulty Drain, cycle...
  • Page 42 Excessive detergent Specific Excessive detergent introduced; drain hose (too much foam during drains) obstructed/kinked; drain filter dirty (EF0) Water leakage: Water drain to Leaks from base; drain pump; wiring; main PCB intervention of Aqua Control system 120mm, cycle blocked 0:LED off 1: LED flashing TSE-P 04.00 EB 42/50...

  • Page 43: Cancelling The Last Alarm Condition

    CANCELING THE LAST ALARM CONDITION To cancel the last memorized alarm condition, press button no. 2 and no. 4 at the same time during the course of the diagnostics cycle. The alarm is cancelled also when a new configuration is given to the main PCB. TSE-P 04.00 EB 43/50 599 34 22-16...

  • Page 44: Configuration Of The Main Pcb

    CONFIGURATION OF THE MAIN PCB A standard main PCB is available as a spare part. This PCB contains only data relative to the wash cycle. After replacing the main PCB, it is necessary to perform the configuration procedure in order to operate the washing machine.

  • Page 45: Configuration Code

    CONFIGURATION CODE The configuration code (16 alphanumeric digits) is shown on a label affixed to the casing of the main PCB and in the Service Notes describing the various models. It is advisable to note the configuration code on the casing of the new PCB fitted to the washing machine.

  • Page 46: Examples Of Configuration

    EXAMPLES OF CONFIGURATION Configuration code: A2A7808080E691F2 POSITION: ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ VALUE: TABLE OF CYCLE PHASE LEDS On models not featuring the display window, it is advisable, before beginning the configuration procedure, to convert the digits of the configuration code into binary format.

  • Page 47: Exiting The Diagnostics/Configuration System

    EXITING THE DIAGNOSTICS CYCLE To exit the diagnostics cycle, switch the appliance off, then on, then off again. TSE-P 04.00 EB 47/50 599 34 22-16...

  • Page 48: Basic Circuit Diagrams

    BASIC CIRCUIT DIAGRAM (AC motor) TSE-P 04.00 EB 48/50 599 34 22-16...
  • Page 49 BASIC CIRCUIT DIAGRAM (DC motor) TSE-P 04.00 EB 49/50 599 34 22-16...
  • Page 50 Key to circuit diagram 1. Main PCB 2. Control/display board 5. Anti-interference filter 6. ON/OFF button 6a.Pilot lamp 7. Door interlock 8. Electronic pressure switch 9. NTC temperature sensor (washing) 10. Anti-boiling pressure switch 1 11. Heating element (washing) 13. Motor 12.

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