Electrolux EWM09 Service Manual
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Electrolux EWM09 Service Manual

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© ELECTROLUX HOME PRODUCTS
Customer Care - EMEA
Training and Operations Support
Technical Support
Edition: 10-2010 rev 00
Serie 6
Serie 7
Publication
number
599 74 08-64
EN
SERVICE MANUAL
WASHING
Top loading washing
machines
with electronic control
system
NEW
COLLECTION
EWM09
Demo
Diagnostics
Alarms table
6 / 7
SERIES

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Summary of Contents for Electrolux EWM09

  • Page 1 SERVICE MANUAL WASHING Serie 6 Serie 7 Top loading washing machines © ELECTROLUX HOME PRODUCTS Publication with electronic control number Customer Care - EMEA system Training and Operations Support Technical Support 599 74 08-64 COLLECTION EWM09 Demo Diagnostics Alarms table...
  • Page 2 Technical Support - A.D.L. 02 / 2011 2/24 599 74 08-64...

  • Page 3: Table Of Contents

    INDEX PURPOSE OF THIS MANUAL ........................4 “DEMO” MODE ..............................5 DEMO MODE SETTING ........................... 5 Exiting DEMO mode ..........................5 DIAGNOSTIC SYSTEM ........................... 6 Accessing diagnostics ..........................6 Quitting the diagnostics system ........................ 6 Diagnostic test phases ..........................7 ALARMS ................................

  • Page 4: 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 washing machines fitted with the EWM09 electronic control system (SERIES 6).

  • Page 5: "Demo" Mode

    2 “DEMO” MODE A special cycle is designed to demonstrate the operation of these appliances in shops, without connecting them to the water mains: The door closure device is activated normally. All motor's low speed movements, the pulses and spin are disabled. The water fill solenoid valves and the drain pump are disabled.

  • Page 6: Diagnostic System

    3 DIAGNOSTIC SYSTEM Accessing diagnostics Do not start the procedure with the combination buttons pressed Series 6 Series 7 Turn the appliance on at the ON/OFF switch. Only in the aesthetics 6 turn the switch to the first position to the right.

  • Page 7: Diagnostic Test Phases

    Diagnostic test phases Irrespective of the type of circuit board and the configuration of the selector, after entering the diagnostic mode, turn the programme selector dial clockwise to perform the diagnostic cycle for the operation of the various components and to read any alarms. Concurrently, a selector control code is shown on the LCD display, which indicates for two seconds the description in the last column of the table below.
  • Page 8 Position 3 Water fill to pre-wash Purpose of the test: To check the correct operation of the pre-wash compartment compartment water route • Door safety interlock Components activated: • Pre-wash solenoid • Door closed Working conditions: • Water level below anti-flooding level •...
  • Page 9 Position 6 No command Purpose of the test: ------------- ------------- Components activated: ------------- Working conditions: LCD display Position 7 Heating Purpose of the test: To check the correct operation of the heater unit. • door fastening device. Components activated: • Wash solenoid, if the water in the tub is not enough to cover the heating element.
  • Page 10 Position 9 Drain, calibration of Purpose of the test: To check the correct operation of the spin cycle analogue pressure switch drain pump and calibrate the analogue pressure and spin switch. • Door safety interlock Components activated: • Drain pump •...

  • Page 11: Alarms

    4 ALARMS Displaying the alarms to the user When a problem arises in the appliance, which generates a “WARNING” or an “ALARM”, this is displayed with three digits, where normally the remaining cycle time is represented. The alarms displayed to the user are listed below: E10 - Water fill difficulty (tap closed) E20 - Drain difficulty (filter dirty) E40 - Door open...

  • Page 12: Reading The Alarms

    Reading the alarms The last three alarms stored in the FLASH memory of the PCB can be displayed: • Enter the diagnostic mode. • Irrespective of the type of circuit board and configuration, turn the programme selector knob clockwise to the tenth position and this will display the last alarm. •...

  • Page 13: Rapid Reading Of Alarms

    Rapid reading of alarms The last three alarms can even be displayed if the selector is not in the tenth diagnostic position or if the appliance is in normal operating mode (for example when performing a wash programme): • Press the START/PAUSE button and the nearest option button simultaneously (as if you were entering DIAGNOSTIC mode) for at least 2 seconds: the LCD display shows the last alarm.

  • Page 14: Operating Time Counter

    5 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. The unit can count up to a maximum of 6,550 hours of operating time. only the operating time of normal programmes (and not diagnostic cycles) is counted the actual operating time for the cycle is counted (which does not include pauses, delayed start time, rinse hold time and soaking phases)

  • Page 15: Display Of Total Operating Time

    5.2 Display of total operating time This time is displayed with a sequence of two digits at a time: the first two digits indicate thousands and hundreds, the second two digits indicate tens and units. For example, if the operating time is 6,550 hours, the display will show the following sequence: Phase 1 →...

  • Page 16: Alarm Summary Table

    Alarm Summary Table Description Possible fault Machine status/action Reset Tap closed. Water pressure too low. Drain pipe improperly positioned. Water fill solenoid valve faulty. Water fill difficulty during washing Cycle is paused with door locked START/RESET Leaks from pressure switch water circuit. Pressure switch faulty.
  • Page 17 Action Description Possible fault Reset Machine status Malfunction in electronic pressure Wiring; Electronic pressure switch. Cycle stops with door locked RESET switch circuit Main electronic circuit board. Drain tube kinked/clogged/improperly positioned. Solenoid valve faulty. Drain filter clogged/dirty. Calibration error of the electronic Drain pump faulty.
  • Page 18 Action Description Possible fault Reset Machine status Check whether the door is closed properly. Faulty wiring. CLOSE THE Door open Cycle paused Door safety interlock faulty. DOOR Main circuit board faulty. Faulty wiring. Problems with door lock Door safety interlock faulty. Cycle paused START/RESET Electrical current leak between heating element and ground.
  • Page 19 Action Description Possible fault Reset Machine status Faulty wiring. Insufficient heating during the NTC probe for wash cycle faulty. The heating phase is skipped START/RESET washing phase Heating element faulty. Main circuit board faulty. Faulty wiring. Overheating during washing NTC probe for wash cycle faulty. Safety drain cycle.
  • Page 20 Action Description Possible fault Reset Machine status Faulty wiring. NTC probe for wash cycle faulty NTC probe for wash cycle faulty. The heating phase is skipped START/RESET (short-circuited or open) Main circuit board faulty. Faulty wiring. NTC probe for wash cycle NTC probe for wash cycle improperly positioned.
  • Page 21 Action Description Possible fault Reset Machine status Faulty wiring. Communication error between Control/display circuit board faulty. ---------------- RESET main PCB and display board Main circuit board faulty. Communication inconsistency between main PCB and display Incorrect control/display board. Cycle blocked ON/OFF board.
  • Page 22 Action Description Possible fault Reset Machine status Drain filter clogged Drain filter clogged/dirty. Warning displayed at the end of cycle. START/RESET (drain phase too long) Drain hose blocked/kinked/too high. Overdosing of detergent Excessive detergent dosing. Warning displayed after 5 attempts or by the (too much foam during drain Drain hose kinked/blocked.

  • Page 23: Diagrams

    6 DIAGRAMS WM diagram with THREE-PHASE ASYNCHRONOUS MOTOR Technical Support - A.D.L. 02 / 2011 23/24 599 74 08-64...

  • Page 24: Key To Diagram

    Key to diagram Appliance electrical components PCB components Main electronic circuit board DOOR_TY Door interlock Triac Door safety interlock PWELT_TY Pre-wash solenoid Triac Pressure switch WELT_TY Wash solenoid Triac NTC (washing) MOTOR_TY Motor Triac Pre-wash solenoid DRAIN_YTY Drain pump Triac Wash solenoid Tachometric generator (motor) Heating element relay...

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