Electrolux TC4 Service Manual
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Electrolux TC4 Service Manual

Electrolux TC4 Service Manual

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ELECTROLUX HOME PRODUCTS
Customer Care - EMEA
Training and Operations Support
Technical Support
Edition: 05/2012 - Rev. 00
Front-Loading Washing
Publication
number
599 75 38-69
EN
SERVICE MANUAL
WASHING
Machines
guide to diagnostics of
electronic controls
EWM09312
THE
INSPIRATION
RANGE
TC3 - TC4
G29

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  • Page 1 SERVICE MANUAL WASHING Front-Loading Washing Machines Publication ELECTROLUX HOME PRODUCTS number Customer Care - EMEA guide to diagnostics of Training and Operations Support electronic controls Technical Support 599 75 38-69 EWM09312 INSPIRATION Edition: 05/2012 - Rev. 00 RANGE TC3 - TC4...
  • Page 2 Guide to diagnostics of EWM09312 electronic controls 2/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...

  • Page 3: Table Of Contents

    Guide to diagnostics of EWM09312 electronic controls Index INTRODUCTION............................5 Purpose of this manual ........................5 Cautions .............................. 5 How to proceed ........................... 6 WM APPLIANCE CONTROL PANELS...................... 7 DIAGNOSTICS SYSTEM .......................... 7 Accessing diagnostics ........................7 Quitting the diagnostics system ......................7 Phases of the diagnostics test ........................
  • Page 4 Guide to diagnostics of EWM09312 electronic controls EH2: Supply voltage too high ....................... 56 EH3: Supply voltage too low ........................ 56 OPERATING CIRCUIT DIAGRAM WM WITH AQUA CONTROL ............57 Key to circuit diagram WM ........................ 58 Main circuit board connectors ......................59 Burns on the main circuit board EWM09312 ..................

  • Page 5: Introduction

    For example: refer to the indications provided/illustrated in the <<metratester>> course at the address (http://electrolux.edvantage.net) on the Electrolux Learning Gateway portal. On completing operations, check that the appliance has been restored to the same state of safety as when it came off the assembly line.

  • Page 6: How To Proceed

    Guide to diagnostics of EWM09312 electronic controls 1.3 How to proceed 1. Identify the type of control in question (page 7) and access the diagnostic cycle. (See page 7). 2. Read the alarm stored (page 12) and consult the instructions regarding the “alarm codes”, (page 13÷16).

  • Page 7: Wm Appliance Control Panels

    Quitting the diagnostics system Styling TC4: To exit the diagnostics system, turn the selector dial to position 0 (zero). Styling TC3: In order to exit the diagnostic system turn the appliance off using the ON/OFF push button.

  • Page 8: Phases Of The Diagnostics Test

    Guide to diagnostics of EWM09312 electronic controls Phases of the diagnostics test Irrespective of the type of PCB and the configuration of the programme 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.
  • Page 9 Guide to diagnostics of EWM09312 electronic controls Selector Components activated Working conditions Function tested LCD display position TC 3 Door closed Water level below Water fill to third - Door safety interlock anti-flooding level solenoid valve - Third solenoid valve TC 4 Maximum time compartment...
  • Page 10 Guide to diagnostics of EWM09312 electronic controls Selector Components activated Working conditions Function tested LCD display position ----- ----- ----- ----- ----- TC 3 - Reading/Deleting the last alarm ----- ---- TC 4 TC 3 - The LEDs, groups of symbols in the LCD screen and the backlight of the display are turned on in sequence.

  • Page 11: Alarms

    TC 4 TC 3 The alarms displayed to the user are listed below and can also be eliminated by the user: TC4 / TC3 E10 - Water fill difficulty (tap closed) E20 - Drain difficulty (filter dirty) E40 - Door open EF0 –...

  • Page 12: Reading The Alarms

    Guide to diagnostics of EWM09312 electronic controls 3.3.2 Reading the alarms The last three alarms stored in the FLASH memory of the PCB can be displayed: enter the diagnostic mode (para. 3.1) Irrespective of the type of PCB and configuration, turn the programme selector knob clockwise to the eleventh position, the last alarm is displayed.

  • Page 13: Alarm Summary Table

    Guide to diagnostics of EWM09312 electronic controls Alarm Summary Table alarm Description Possible fault Machine status/action Reset Page Tap closed or water pressure too low; drain pipe improperly positioned; Water fill difficulty during washing water fill solenoid valve faulty; leaks from water circuit on pressure Cycle is paused with door locked START/RESET switch;...
  • Page 14 Guide to diagnostics of EWM09312 electronic controls alarm Description Possible fault Machine status/action Reset Page Cycle stops with door open Motor power triac short-circuited Current leakage from motor or from wiring; Main PCB faulty; ON/OFF (after 5 attempts) No signal from motor tachometric Wiring faulty;...
  • Page 15 Guide to diagnostics of EWM09312 electronic controls alarm Description Possible fault Machine status/action Reset Page START Display board configuration error Display board faulty ---------------- ON/OFF RESET Display board sensor/touch key Display board faulty ---------------- ON/OFF faulty Cycle stops with door locked Electronically controlled valve Faulty wiring;...

  • Page 16: Notes On The Behaviour Of Certain Alarms

    Guide to diagnostics of EWM09312 electronic controls 3.5 Notes on the behaviour of certain alarms  Configuration alarm E93: when this alarm rings (when turned on) the machine blocks and the alarm code appears on the display provided the relevant configuration part is intact.

  • Page 17: Cannot Access The Diagnostics Programme

    Guide to diagnostics of EWM09312 electronic controls 4 CANNOT ACCESS THE DIAGNOSTICS PROGRAMME 4.1 None of the LEDs on the circuit board light up Are the power supply cable and the connection on the main board (connector J4) working Replace/repair the power supply cable, properly? check the connection Is the communication wiring between the main...

  • Page 18: Troubleshooting Based On Alarm Codes

    Guide to diagnostics of EWM09312 electronic controls 5 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) check that all the connectors are correctly inserted Run the diagnostic cycle and fill all the trays with water(phases 2,3,4) Are all the trays filling with water?
  • Page 19 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 60 19/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...

  • Page 20: 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 Run the diagnostic cycle and fill all the trays with water (phases 2,3,4) Are all the trays filling with water? Is the drain pipe positioned...
  • 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 60 21/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...

  • Page 22: 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 23 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 60 23/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...

  • Page 24: 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 Replace the pump and repeat Is the resistance measurement of the pump the diagnostic cycle to check measurement of the pump approximately 155÷182...
  • Page 25 Guide to diagnostics of EWM09312 electronic controls Fig. 4 fig. 5 MAIN CIRCUIT BOARD 155÷182Ω Ω Drain pump fig. 6 155÷182Ω If there are burns on the circuit board, see page 60 25/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...

  • Page 26: 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. If there are burns on the circuit board, see page 60 E31: The analogue pressure switch provides the main circuit board...

  • Page 27: 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 Checks to perform: check that all the connectors are correctly inserted Drain the water from the tub.

  • Page 28: 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 29: 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 Drain the water from Clean the internal the tub and check...

  • Page 30: E41: Door Open (Device With 3 Connections)

    Guide to diagnostics of EWM09312 electronic controls E41: Door open (device with 3 connections) Maximum time exceeded (PTC = 15 seconds) Checks to perform: check that all the connectors are correctly inserted Close the door correctly and Is the door closed repeat the diagnostic cycle to correctly? check for any further alarms.
  • Page 31 Guide to diagnostics of EWM09312 electronic controls (device with 3 connections) Fig. 4 fig. 9 MAIN CIRCUIT BOARD Ω Ω Door Lock traditional with flange n Ω Ω If there are burns on the circuit board, see page 60 31/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...

  • Page 32: E42: Problems Opening Door

    Guide to diagnostics of EWM09312 electronic controls E42: Problems opening door Maximum time exceeded (255 seconds) Checks to perform: check that all the connectors are correctly inserted Close the door correctly and Is the door closed repeat the diagnostic cycle to correctly? check for any further alarms.
  • Page 33 Guide to diagnostics of EWM09312 electronic controls (device with 3 connections) Fig. 4 fig. 9 MAIN CIRCUIT BOARD Ω Ω Door Lock traditional with flange n Ω Ω If there are burns on the circuit board, see page 60 33/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...
  • Page 34 Guide to diagnostics of EWM09312 electronic controls E43: Problems with the component (Triac) controlling the door delay system (device with 3 connections) Checks to perform: check that all the connectors are correctly inserted Detach the connectors and To check the wiring, with the measure on the component door open, measure on the (fig.

  • Page 35: 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) controlling the door delay system Checks to perform: check that all the connectors are correctly inserted...

  • Page 36: 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 during diagnostics) check that all the connectors are correctly inserted Checks to perform:...

  • Page 37: 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 Access phase 7 of the diagnostic cycle Does the motor...
  • Page 38 Guide to diagnostics of EWM09312 electronic controls fig. 10 Fig. 4 General earthing MAIN CIRCUIT BOARD connection fig. 6 Ω Ω Ω Ω fig. 12 fig. 11 If there are burns on the circuit board, see page 60 38/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...

  • Page 39: 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 The motor never runs To check the wiring, measure Check the motor as...
  • Page 40 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. 2) Check for the presence of any marks / residue / water or detergent deposits on the motor and where these come from.

  • Page 41: 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. If there are burns on the circuit board, see page 60 41/62...

  • Page 42: 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 wiring connector J11-1 ÷...

  • Page 43: 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 Detach the connector and Run the diagnostic cycle measure between the and fill with water up to the...

  • Page 44: E66: Heating Element Power Supply Relay Faulty

    Guide to diagnostics of EWM09312 electronic controls E66: Heating element power supply relay faulty (inconsistency between the sensing and the status of Relay K2) Checks to perform: check that all the connectors are correctly inserted Replace the circuit board and repeat Measure between the connector J6-1/J6-2 of the diagnostic cycle to check for any the main circuit board and the appliance body.

  • Page 45: 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 the diagnostic cycle Detach the connector Run phase 8 of the and fill with water up to the and measure between diagnostic cycle, drain water door level to make sure the...

  • Page 46: 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 element ( ) between Replace the heating element...

  • Page 47: E6A: Heating Relay Sensing Faulty

    Guide to diagnostics of EWM09312 electronic controls E6A: Heating relay sensing faulty check that all the connectors are correctly inserted Checks to perform: Replace the circuit board and repeat the diagnostic cycle to check for any further alarms. If there are burns on the circuit board, see page 60 E6H: Heating element power supply relay faulty (inconsistency between the sensing and the status of Relay K1)

  • Page 48: 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 49: 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 50: 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 the programme selector to Repeat the diagnostic every setting: wait at least...

  • Page 51: 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 Checks to perform: check that all the connectors are correctly inserted Check the wiring between the main circuit board and the display board: Replace / repair the wiring and repeat ►...

  • Page 52: 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. E93: Appliance configuration error Inconsistency between configuration values on starting the appliance Checks to perform:...

  • Page 53: 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 solenoid Does the Replace the main circuit board valve start filling with...

  • Page 54: 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 Checks to perform: check that all the connectors are correctly inserted Replace the main circuit board and run the diagnostic cycle to check for any further alarms. If there are burns on the circuit board, see page 60 EF1: Drain hose blocked/kinked/too high;...

  • Page 55: 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. EF6: Reset appliance.

  • Page 56: 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) Checks to perform: check that all the connectors are correctly inserted Important! The appliance remains in alarm status until the mains voltage returns to the correct values or the appliance is switched off.
  • Page 57 Guide to diagnostics of EWM09312 electronic controls 6 OPERATING CIRCUIT DIAGRAM WM WITH AQUA CONTROL 57/62 2012 SOE/DT-mdm FCPD-dp 599 75 38-69 Rev.00...
  • Page 58 Guide to diagnostics of EWM09312 electronic controls 6.1 Key to circuit diagram WM Appliance electrical components PCB components 1. Door safety interlock - Traditional 2. Analogue pressure switch 3. NTC temperature probe 4. Pre-wash solenoid valve DOOR_TY Door interlock Triac 5.
  • Page 59 Guide to diagnostics of EWM09312 electronic controls 6.2 Main circuit board connectors J7-1 Analogue pressure switch (+5V) Serial Interface: 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 J7-5 NTC temperature probe Communication with display board: J10-1 Vee 12V...
  • Page 60 Guide to diagnostics of EWM09312 electronic controls 6.3 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). Use the figures that follow to pinpoint the component which may have caused the problem, depending on the area of the burns.
  • Page 61 Remarks ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- ----------------------------------------------------------------------------------------------------------------------------- ------------------- -------------------------------------------------------------------------------------------------- ---------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------- ------------------- ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- ----------------------------------------------------------------------------------------------------------------------------- ------------------- ---------------------------------------------------------------------------------------------------------------- -------------------------------- ----------------------------------------------------------------------------------------------------------------------------- ------------------- ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- -------------------------------------------------------------------------------------------------------------------------------------------- ---- ----------------------------------------------------------------------------------------------------------------------------- ------------------- ----------------------------------------------------------------------------------------------------------------------------- ------------------- ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- ------------------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------- ------------------- ----------------------------------------------------------------------------------------------------------------------------- -------------------...
  • Page 62 REVISION: Revisions Date Description Author Approved by - on XX – 0X/201X 05/2012 Document Creation...

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