Electrolux EWM09312 Service Manual
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Electrolux EWM09312 Service Manual

Electrolux EWM09312 Service Manual

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SERVICE MANUAL
WASHING
Washing machines
© ELECTROLUX HOME PRODUCTS
Guide to diagnostics of
Customer Care - EMEA
Publication
electronic controls
Training and Operations Support
number
Technical Support
EWM09312
599 75 18-74
THE
EN
INSPIRATION RANGE
TC4 & TC5
Edition: 04/2012 - Rev. 00

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  • Page 1 SERVICE MANUAL WASHING Washing machines © ELECTROLUX HOME PRODUCTS Guide to diagnostics of Customer Care - EMEA Publication electronic controls Training and Operations Support number Technical Support EWM09312 599 75 18-74 INSPIRATION RANGE TC4 & TC5 Edition: 04/2012 - Rev. 00...
  • Page 2 Guide to diagnostics of EWM09312 electronic controls 2/69 2012 SOE/DT-mdm FCPD-dp 599 75 18-74 Rev.00...

  • Page 3: Table Of Contents

    Guide to diagnostics of EWM09312 electronic controls Index INTRODUCTION ..........................5     Purpose of this manual ........................5     Cautions ............................6     How to proceed ..........................7     WM APPLIANCE CONTROL PANELS ....................8  ...
  • Page 4 OPERATING CIRCUIT DIAGRAM WM WITH AQUA CONTROL ............64     Key to circuit diagram WM ......................65     Main circuit board connectors ...................... 66     Burns on the main circuit board EWM09312 ................67     4/69 2012 SOE/DT-mdm FCPD-dp 599 75 18-74 Rev.00...

  • Page 5: Introduction

    Guide to diagnostics of EWM09312 electronic controls 1 INTRODUCTION 1.1 Purpose of this manual The purpose of this manual is to explain, simply and schematically, the steps any Technician should take when faced with the problems indicated by the various alarm codes on appliances with electronic control in the EWM09312 series.

  • Page 6: Cautions

    Guide to diagnostics of EWM09312 electronic controls 1.2 Cautions Any work on electrical appliances must only be carried out by qualified personnel. Before servicing an appliance, check the efficiency of the electrical system in the home using appropriate instruments. For example: refer to the indications provided/illustrated in the <<metratester>>...

  • Page 7: How To Proceed

    Guide to diagnostics of EWM09312 electronic controls 1.3 How to proceed 1. Identify the type of control in question (page 8) and access the diagnostic cycle. (See page 8) 2. Read the alarm stored (page 12) and consult the instructions regarding the “alarm codes”, page 15÷17.

  • Page 8: Wm Appliance Control Panels

    Guide to diagnostics of EWM09312 electronic controls 2 WM APPLIANCE CONTROL PANELS These are the stylings available at the time of printing of this Service Manual. Others may be developed in future. 3 DIAGNOSTICS SYSTEM 3.1 Accessing diagnostics The operations listed below must be carried out within 7 seconds.

  • Page 9: Phases Of The Diagnostics Test

    Guide to diagnostics of EWM09312 electronic controls 3.3 Phases of the diagnostics test Irrespective of the type of electronic board and selector configuration, once the diagnostics system has been activated, turn the selector dial clockwise and you can check the various components and alarm reading.
  • Page 10 Guide to diagnostics of EWM09312 electronic controls - Door safety interlock - Wash solenoid, if the water in the tub is not enough to cover Door closed Check for leaks the heating element Water level above from the tub. Motor (55 rpm clockwise,...

  • Page 11: Alarms

    Guide to diagnostics of EWM09312 electronic controls ALARMS 4.1 Displaying the alarms to the user 4.1.1 Styling TC4 When a problem arises with the appliance generating a “WARNING” or “ALARM” this is shown in three digits (where the remaining time for the cycle to finish is shown) and simultaneously by the yellow sensor LED flashing STOP/PAUSE and the alarm (even if the user has disactivated it) gives off three short beeps every twenty seconds for five minutes.

  • Page 12: Reading The Alarms

    Guide to diagnostics of EWM09312 electronic controls 4.2 Reading the alarms The last three alarms stored in the FLASH memory of the PCB can be displayed: • Enter diagnostics mode • Irrespective of the type of circuit board and configuration, turn the programme selector knob clockwise to the eleventh position and the last alarm is displayed.

  • Page 13: Example Of Alarm Display

    Guide to diagnostics of EWM09312 electronic controls 4.2.2 Example of alarm display Let us take alarm E43 (problem with the door safety TRIAC) as an example; the following will be displayed: • a sequence of four flashes of the START/PAUSE sensor red light indicates the first number E •...

  • Page 14: Deleting The Last Alarm

    Guide to diagnostics of EWM09312 electronic controls 4.4 Deleting the last alarm It is good practice to cancel the alarms stored: • after reading the alarm codes, to check whether the alarm re-occurs during the diagnostic cycle • after repairing the appliance, to check whether it re-occurs during testing...

  • Page 15: Alarm Summary Table

    Guide to diagnostics of EWM09312 electronic controls 4.5 ALARM SUMMARY TABLE Alarm Description Possible fault Machine status/action Reset Page -------------------------------- Tap closed or water pressure too low; Drain pipe improperly Water fill difficulty during positioned; Water fill solenoid valve faulty; Leaks from water circuit...
  • Page 16 Guide to diagnostics of EWM09312 electronic controls Alarm Description Possible fault Machine status/action Reset Page Motor power triac short- Cycle stops with door open Current leakage from motor or from wiring; Main PCB faulty; ON/OFF circuited (after 5 attempts) No signal from motor Wiring faulty;...
  • Page 17 Guide to diagnostics of EWM09312 electronic controls Alarm Description Possible fault Machine status/action Reset Page Inconsistency between programme selector and cycle Main PCB faulty (incorrect configuration data). Cycle blocked RESET configuration START Display board configuration Display board faulty ---------------- ON/OFF...

  • Page 18: Notes On The Behaviour Of Certain Alarms

    Guide to diagnostics of EWM09312 electronic controls 4.6 Notes on the behaviour of certain alarms Configuration alarm E93: when this alarm is detected (on switching on the appliance), the appliance stops, the LEDs in the START/PAUSE sensor start to flash, displaying the complete code (family plus alarm), the display shows the alarm code provided the relevant configuration part is intact.

  • Page 19: Cannot Access The Diagnostics Programme

    Guide to diagnostics of EWM09312 electronic controls 5 CANNOT ACCESS THE DIAGNOSTICS PROGRAMME 5.1 None of the LEDs on the circuit board light up Are the power supply cable and the connection Replace/repair the power supply cable, on the main board (connector J4)

  • Page 20: Troubleshooting Based On Alarm Codes

    Guide to diagnostics of EWM09312 electronic controls 6 TROUBLESHOOTING BASED ON ALARM CODES E11: Water fill difficulty during washing Maximum water fill time for every level of the pressure switch (the time is reset every time the level is achieved)
  • Page 21 Guide to diagnostics of EWM09312 electronic controls Fig. 1 Fig. 4 MAIN CIRCUIT BOARD Fig. 2 3.5÷4.5KΩ 3.5÷4.5KΩ 1) Solenoid valve for Pre-wash 2) Solenoid valve for Wash Fig. 3 3.5÷4.5KΩ If there are burns on the circuit board, see page 67...

  • Page 22: E13: Water Leaks

    Guide to diagnostics of EWM09312 electronic controls E13: Water leaks Maximum overall water fill time exceeded (sum of all water fills between one drain phase and the next to avoid exceeding the maximum volume) Checks to perform: Check that all the connectors are correctly inserted...
  • Page 23 Guide to diagnostics of EWM09312 electronic controls Fig. 1 Fig. 4 MAIN CIRCUIT BOARD Fig. 2 3.5÷4.5KΩ 3.5÷4.5KΩ 1) Solenoid valve for Pre-wash 2) Solenoid valve for Wash Fig.3 3.5÷4.5KΩ If there are burns on the circuit board, see page 67...

  • Page 24: E21: Drain Difficulty

    Guide to diagnostics of EWM09312 electronic controls E21: Drain difficulty Maximum drain time exceeded (measured for every cycle phase) Checks to perform: Check that all the connectors are correctly inserted Clean the filter and repeat the diagnostic cycle Is the drain filter clean? to check for any further alarms.
  • Page 25 Guide to diagnostics of EWM09312 electronic controls Fig. 1 Fig. 5 Fig. 4 MAIN CIRCUIT BOARD 155÷200Ω Drain pump 155÷200Ω If there are burns on the circuit board, see page 67 25/69 2012 SOE/DT-mdm FCPD-dp 599 75 18-74 Rev.00...

  • Page 26: E23: Problems With The Component (Triac) Controlling The Drain Pump

    Guide to diagnostics of EWM09312 electronic controls E23: Problems with the component (triac) controlling the drain pump Checks to perform: Check that all the connectors are correctly inserted Is the resistance measurement of the pump Is the resistance approximately 155÷200 Ω?
  • Page 27 Guide to diagnostics of EWM09312 electronic controls Fig. 4 Fig. 5 MAIN CIRCUIT BOARD 155÷200Ω ∞ Ω Drain pump Fig. 6 155÷200Ω If there are burns on the circuit board, see page 67 27/69 2012 SOE/DT-mdm FCPD-dp 599 75 18-74 Rev.00...

  • Page 28: E24: Sensing Circuit Of The Component (Triac) Controlling The Drain Pump Faulty

    Guide to diagnostics of EWM09312 electronic controls E24: Sensing circuit of the component (triac) controlling the drain pump faulty Checks to perform: Check that all the connectors are correctly inserted Replace the circuit board and repeat the diagnostic cycle to check for any further alarms.

  • Page 29: E32: The Analogue Pressure Switch Causes An Error During Calibration

    Guide to diagnostics of EWM09312 electronic controls E32: The analogue pressure switch causes an error during calibration (At the start of every cycle, the appliance drains to empty the tub and creates a level 0 to check the calibration of the analogue pressure switch...

  • Page 30: E35: Water Level Too High

    Guide to diagnostics of EWM09312 electronic controls E35: Water level too high The main circuit board measures a water level, using the electronic pressure switch, of more than 300 mm for longer than 15 secs. Checks to perform: Check that all the connectors are correctly inserted Drain the water from the tub.

  • Page 31: E38: Internal Pressure Chamber Is Clogged

    Guide to diagnostics of EWM09312 electronic controls E38: Internal pressure chamber is clogged The analogue pressure switch is not able to measure any variation in the water level for at least 30 secs during drum rotation. Checks to perform: Check that all the connectors are correctly inserted...

  • Page 32: E41: Door Open (Device With 3 Connections With Flange)

    Guide to diagnostics of EWM09312 electronic controls E41: Door open (device with 3 connections with flange) Maximum time exceeded (PTC = 15 seconds) Checks to perform: Check that all the connectors are correctly inserted Fig. 9 Close the door correctly and...
  • Page 33 Guide to diagnostics of EWM09312 electronic controls (device with 3 connections with flange) Fig. 4 Fig. 9 Incorporated flange Fig. 9A MAIN CIRCUIT BOARD ∞ Ω Door Lock Ω traditional with flange n Ω ∞ Ω If there are burns on the circuit board,...

  • Page 34: E41: Door Open (Device With 3 Connections And No Flange)

    Guide to diagnostics of EWM09312 electronic controls E41: Door open (device with 3 connections and no flange) Maximum time exceeded (PTC = 15 seconds) Checks to perform: Check that all the connectors are correctly inserted Fig. 28 Traditional door lock with 3 connections and no flange.
  • Page 35 Guide to diagnostics of EWM09312 electronic controls (device with 3 connections and no flange) Without incorporated flange Fig. 4 Fig. 28A Fig. 28 MAIN CIRCUIT BOARD ∞ Ω Ω Traditional door traditional without flange n Ω ∞ Ω If there are burns on the circuit board,...

  • Page 36: E42: Problems Opening Door (Device With 3 Connections With Flange)

    Guide to diagnostics of EWM09312 electronic controls E42: Problems opening door (device with 3 connections with flange) Maximum time exceeded (255 seconds) Checks to perform: Check that all the connectors are correctly inserted Fig. 9 Close the door correctly and...
  • Page 37 Guide to diagnostics of EWM09312 electronic controls (device with 3 connections with flange) Fig. 4 Fig. 9 Incorporated flange Fig. 9A MAIN CIRCUIT BOARD ∞ Ω Door Lock Ω traditional with flange n Ω ∞ Ω If there are burns on the circuit board,...

  • Page 38: E42: Problems Opening Door (Device With 3 Connections And No Flange)

    Guide to diagnostics of EWM09312 electronic controls E42: Problems opening door (device with 3 connections and no flange) Maximum time exceeded (255 seconds) Checks to perform: Check that all the connectors are correctly inserted Fig. 28 Traditional door lock with 3 connections and no flange.
  • Page 39 Guide to diagnostics of EWM09312 electronic controls (device with 3 connections and no flange) Without incorporated flange Fig. 4 Fig. 28A Fig. 28 MAIN CIRCUIT BOARD ∞ Ω Ω n Ω ∞ Ω If there are burns on the circuit board,...
  • Page 40 Guide to diagnostics of EWM09312 electronic controls E43: Problems with the component (Triac) controlling the door delay system (device with 3 connections and flange) Checks to perform: Check that all the connectors are correctly inserted Detach the connectors and To check the wiring, keep the...
  • Page 41 Guide to diagnostics of EWM09312 electronic controls E43: Problems with the component (Triac) controlling the door delay system (device with 3 connections and no flange) Checks to perform: Check that all the connectors are correctly inserted Disconnect the door lock...

  • Page 42: E44: Door Closed "Sensing" Circuit Faulty

    Guide to diagnostics of EWM09312 electronic controls E44: Door closed “sensing” circuit faulty Checks to perform: Check that all the connectors are correctly inserted Replace the circuit board and repeat the diagnostic cycle to check for any further alarms. E45: Problems with the “sensing” circuit of the component (triac)

  • Page 43: E51: Motor Power Triac Short-Circuited

    Guide to diagnostics of EWM09312 electronic controls E51: Motor power TRIAC short-circuited Activation of the protection system for the Triac short-circuit (after 5 attempts separated by a 5-minute pause, during the cycle, immediately if recognised at the start of the cycle or...

  • Page 44: E52: No Signal From Motor Tachometric Generator (First Part)

    Guide to diagnostics of EWM09312 electronic controls E52: No signal from motor tachometric generator (first part) Cycle interrupted after 5 attempts during the cycle, immediately if recognised at the start of the cycle or during diagnostics. Checks to perform: Check that all the connectors are correctly inserted...
  • Page 45 Guide to diagnostics of EWM09312 electronic controls Fig. 10 Fig. 4 General earthing connection MAIN CIRCUIT BOARD Ω ∞ Ω Fig. 6 ∞ Ω Ω Fig. 12 Fig. 11 If there are burns on the circuit board, see page 67...

  • Page 46: E52: No Signal From Motor Tachometric Generator (Second Part)

    Guide to diagnostics of EWM09312 electronic controls E52: No signal from motor tachometric generator (second part) Cycle interrupted after 5 attempts during the cycle, immediately if recognised at the start of the cycle or during diagnostics. Checks to perform: Check that all the connectors are correctly inserted...
  • Page 47 Guide to diagnostics of EWM09312 electronic controls How to check collector motors P = motor protector 1) Check the connection blocks (wiring) and R = rotor S = stator for the presence of any protruding/kinked T = tachometric generator terminals.

  • Page 48: E53: Problems With The "Sensing" Circuit Of The Component (Triac) Powering The Motor

    Guide to diagnostics of EWM09312 electronic controls E53: Problems with the “sensing” circuit of the component (Triac) powering the motor Checks to perform: Check that all the connectors are correctly inserted Replace the circuit board and repeat the diagnostic cycle to check for any further alarms.

  • Page 49: E54: Motor Relay Contacts Sticking

    Guide to diagnostics of EWM09312 electronic controls E54: Motor relay contacts sticking Voltage value on the motor circuit even when the same should not be operating Checks to perform: Check that all the connectors are correctly inserted Measure between all the terminals of the Replace the circuit board and repeat the wiring connector J11-1 ÷...

  • Page 50: E62: Overheating During Washing

    Guide to diagnostics of EWM09312 electronic controls E62: Overheating during washing The temperature of the NTC probe exceeds 88°C for more than 5 mins. Checks to perform: Check that all the connectors are correctly inserted Run the diagnostic cycle Detach the connector and...

  • Page 51: E66: Heating Element Power Supply Relay Faulty

    Guide to diagnostics of EWM09312 electronic controls E66: Heating element power supply relay faulty Checks to perform: Check that all the connectors are correctly inserted Replace the circuit board and repeat the Measure between the connector J6-1/J6-2 of diagnostic cycle to check for any further the main circuit board and the appliance body.

  • Page 52: E68: Washing Heating Element Leakage

    Guide to diagnostics of EWM09312 electronic controls E68: Washing heating element leakage Checks to perform: Check that all the connectors are correctly inserted Run phase 8 of the Run the diagnostic cycle Detach the connector diagnostic cycle, drain water and fill with water up to the and measure between from the tub.

  • Page 53: E69: Washing Heating Element Damaged

    Guide to diagnostics of EWM09312 electronic controls E69: Washing heating element damaged Checks to perform: Check that all the connectors are correctly inserted Measure the resistance Measure the resistance value directly on the value of the heating terminals of the heating...

  • Page 54: E6A: Heating Relay Sensing Faulty

    Guide to diagnostics of EWM09312 electronic controls E6A: Heating relay sensing faulty Checks to perform: Check that all the connectors are correctly inserted Replace the circuit board and repeat the diagnostic cycle to check for any further alarms. If there are burns on the circuit board,...

  • Page 55: E71: Washing Ntc Probe Faulty

    Guide to diagnostics of EWM09312 electronic controls E71: Washing NTC probe faulty Voltage value out of range (short-circuit or open circuit) Checks to perform: Check that all the connectors are correctly inserted Run phase 6 of the diagnostic cycle Run phase 8 of the Detach the connector and wait for the water to fill.

  • Page 56: E74: Ntc Probe Improperly Positioned

    Guide to diagnostics of EWM09312 electronic controls E74: NTC probe improperly positioned Checks to perform: Check that all the connectors are correctly inserted Reposition the probe in its seat and Is the probe visibly positioned correctly in repeat the diagnostic cycle to check for its seat? any further alarms.

  • Page 57: E83: Error Reading The Programme Selector Code

    Guide to diagnostics of EWM09312 electronic controls E83: Error reading the programme selector code Selector position code not envisaged by the configuration data or configuration error Checks to perform: Check that all the connectors are correctly inserted Turn the appliance on, turn...

  • Page 58: E91: Communication Error Between The Display Board And The Main Circuit Board

    Guide to diagnostics of EWM09312 electronic controls E91: Communication error between the display board and the main circuit board Inconsistency between configuration values on starting the appliance Checks to perform: Check that all the connectors are correctly inserted Check the wiring between the main circuit...

  • Page 59: E92: Protocol Incongruence

    Guide to diagnostics of EWM09312 electronic controls E92: protocol incongruence Inconsistency between configuration values on starting the appliance Checks to perform: Check that all the connectors are correctly inserted Incorrect configuration possible. Replace the circuit board and repeat the diagnostic cycle to check for any further alarms.

  • Page 60: Ec1: Water Fill Solenoid Valves Blocked

    Guide to diagnostics of EWM09312 electronic controls EC1: Water fill solenoid valves blocked The flowmeter has to fill water even with the solenoid valve not piloted Checks to perform: Check that all the connectors are correctly inserted Does the Does the solenoid...

  • Page 61: Ec4: Ags Current Sensor Faulty Error

    Guide to diagnostics of EWM09312 electronic controls EC4: AGS current sensor faulty error Spin speed reduced to safety speed of 150 rpm Check that all the connectors are correctly inserted Checks to perform: Replace the main circuit board and run the diagnostic cycle to check for any further alarms.

  • Page 62: Ef5: Unbalanced Load, Spin Phases Skipped

    Guide to diagnostics of EWM09312 electronic controls EF5: Unbalanced load, spin phases skipped. Checks to perform: Check that all the connectors are correctly inserted This is an unbalanced load warning. The appliance detected an extremely unbalanced load during the spin phases. Advise the customer to load more washing into the drum and not just individual garments.

  • Page 63: Eh2: Supply Voltage Too High

    Guide to diagnostics of EWM09312 electronic controls EH2: Supply voltage too high Supply voltage value higher than the one configured (for more than 10 seconds) Check that all the connectors are correctly inserted Checks to perform: Important! The appliance remains in alarm status until the mains frequency returns to the correct values or the appliance is switched off (programme selector set to “0”).

  • Page 64: Operating Circuit Diagram Wm With Aqua Control

    Guide to diagnostics of EWM09312 electronic controls 7 OPERATING CIRCUIT DIAGRAM WM WITH AQUA CONTROL 64/69 2012 SOI/DT-mdm FCPD-dp 599 75 18-74 Rev.00...

  • Page 65: Key To Circuit Diagram Wm

    Guide to diagnostics of EWM09312 electronic controls 7.1 Key to circuit diagram WM Appliance electrical components PCB components 1. Traditional door lock without incorporated flange 2. Traditional door lock with incorporated flange 3. Analogue pressure switch 4. NTC temperature probe...

  • Page 66: Main Circuit Board Connectors

    Guide to diagnostics of EWM09312 electronic controls 7.2 Main circuit board connectors Serial interface: J7-1 Analogue pressure switch (+5V) J9-1 ASY_IN J7-2 Analogue pressure switch (GND) J9-2 ASY_OUT J7-3 Analogue pressure switch (signal) J9-3 +5V J7-4 NTC temperature probe J9-4 GND...

  • Page 67: Burns On The Main Circuit Board Ewm09312

    Guide to diagnostics of EWM09312 electronic controls 7.3 Burns on the main circuit board EWM09312 In the event of burns on the main circuit board, check whether the problem was caused by another electrical component (short-circuits, poor insulation, water leaks).
  • Page 68 Remarks ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ 68/69 2012 SOI/DT-mdm FCPD-dp 599 75 18-74 Rev.00...
  • Page 69 Revision Date Description Author Approved by: 04/2012 Document creation XX – 0X/201X...

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