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Electrolux EWM09312, Service Manual

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Electrolux EWM09312 Service Manual Download Page 70

Technical Support - A.D.L. 

70/70 

599 74 23-12 Rev.00 

Notes 
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Summary of Contents for EWM09312

Page 1: ...ading washing machines guide to diagnostics of electronic controls EWM09312 ELECTROLUX HOME PRODUCTS Customer Care EMEA Training and Operations Support Technical Support Edition 04 2011 Rev 00 Publication number 599 74 23 12 EN ...

Page 2: ...Technical Support A D L 2 70 599 74 23 12 Rev 00 ...

Page 3: ...14 4 4 Deleting the last alarm 14 4 5 Alarm Summary Table 15 4 6 Notes on the behaviour of certain alarms 22 5 OPERATING TIME COUNTER 23 5 1 Reading the operating time 23 5 2 Display of total operating time 24 6 CANNOT ACCESS THE DIAGNOSTICS PROGRAMME 25 6 1 None of the LEDs on the circuit board light up 25 6 2 Some of the LEDs on the circuit board light up 25 7 TROUBLESHOOTING BASED ON ALARM CODE...

Page 4: ...ing Gateway portal http electrolux edvantage net When the work is finished check that the equipment s safety conditions have been reinstated as though it were straight off the assembly line In the event of handling replacing the electronic circuit board use the ESD Cod 405 50 63 95 4 kit to avoid electrostatic discharges damaging the electronic circuit board see S B No 599 72 08 09 Any work on ele...

Page 5: ...3 Delete the alarms stored page 14 4 If you are unable to access the diagnostic mode consult the chapter entitled The diagnostics system cannot be accessed page 25 5 Should the main electronic circuit board need to be replaced make sure there are no burns See page 68 6 After all intervention check the appliance is operating correctly using the diagnostic cycle page 7 7 Delete any alarm that may ha...

Page 6: ...PLIANCE CONTROL PANELS Below are the styling versions available at the time of issuing of this Service Manual Series 6 with 14 position selector plus OFF position Series 7 with 16 position hi fi selector without OFF position NEW COLLECTION SERIES 6 SERIES 7 ...

Page 7: ...in to flash in sequence approximately 3 seconds In the first position the operation of the buttons of the related LEDs and of the groups of symbols shown on the LCD screen is checked turn the programme selector dial clockwise to run the diagnostic cycle for the operation of the various components and to read any alarms see diagnostic test During this phase if any key combination is pressed except ...

Page 8: ...Purpose of the test To test operation of all the LEDs and switches Components activated The LEDs are turned on in sequence as are the symbol groups of the LCD display and its backlight Behaviour All LEDs turn on in sequence By pressing a key the corresponding icon unit lights up The code is shown on the LCD and a beep sounds All the icons on the LCD flash Working conditions There is a control to r...

Page 9: ...imum time 5 mins LCD display Water level in the tub is displayed mm Position 4 Water fill to conditioner compartment Purpose of the test To check the correct operation of the conditioner compartment water route Components activated Door safety interlock Pre wash and wash solenoid valves Working conditions Door closed Water level below anti flooding level Maximum time 5 mins LCD display Water level...

Page 10: ...ting element Working conditions Door closed Water level high enough to cover the heating element Maximum time 10 mins up to 90 C LCD display Temperature in C measured using the NTC probe Position 8 Leaks from the tub Purpose of the test To check for any water leaks from the tub during operation Components activated Door fastening device Wash solenoid if the water in the tub is not enough to cover ...

Page 11: ...m via DSP Components activated Drum rotation motor Door fastening device Drum position sensor DSP Working conditions Door closed LCD display Position 11 Reading Deleting the last alarm Purpose of the test Reading Deleting the last alarm Components activated Working conditions LCD display In most cases this time is sufficient to check the heating However the time can be increased by repeating the p...

Page 12: ...cessary to wait for power supply voltage and or frequency to restore normal conditions The alarms are enabled during the execution of the washing programme With the exception of alarms associated with the configuration and the power supply voltage frequency which are also displayed during the programme selection phase The door can normally be opened except where specified when an alarm condition h...

Page 13: ...nter the diagnostic mode Irrespective of the type of circuit board and configuration turn the programme selector knob clockwise to the eleventh position and this will display the last alarm To display previous alarms press the button to the left of the START PAUSE button in sequence as shown in the figure To return to the last alarm press the START PAUSE button ...

Page 14: ...layed the appliance continues to perform the cycle or if in the programme selection phase it maintains the previously selected options in memory 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 Series 6 ...

Page 15: ... too low Water fill solenoid valve faulty Leaks clogging of pressure switch water circuit Pressure switch faulty Cycle is paused with door locked START RESET E21 Drain difficulty during washing Drain tube kinked clogged improperly positioned Drain filter clogged dirty Faulty wiring Pressure switch faulty Drain pump rotor blocked Drain pump faulty Main circuit board faulty Cycle is paused after 2 a...

Page 16: ...lter clogged dirty Drain pump faulty Leaks from pressure switch water circuit Pressure switch defective Wiring main circuit board Cycle paused START RESET E35 Overflow Water fill solenoid valve faulty Leaks from pressure switch water circuit Faulty wiring Pressure switch faulty Main circuit board faulty Cycle interrupted Safety drain cycle Drain pump continues to operate 5 min on then 5 min off et...

Page 17: ...lay system Main circuit board faulty Safety drain cycle Cycle blocked RESET E45 Faulty sensing by door delay system Triac Main circuit board faulty Safety drain cycle Cycle blocked RESET E51 Motor power Triac short circuited Faulty wiring Motor faulty Main circuit board faulty After 5 attempts cycle blocked with door unlocked ON OFF RESET E52 No signal from motor tachometric generator Faulty wirin...

Page 18: ...ent power relay faulty inconsistency between sensing and relay status Main circuit board faulty Safety water fill Cycle stops with door closed ON OFF RESET E68 Current leak to the ground Earth leakage between heating element and earth The heating phase is skipped START RESET E69 Heating element interrupted Faulty wiring Heating element for washing interrupted thermal fuse open Main circuit board f...

Page 19: ...T RESET E74 NTC probe for wash cycle improperly positioned Faulty wiring NTC probe for wash cycle improperly positioned NTC probe faulty Main circuit board faulty The heating phase is skipped RESET E83 Error in reading selector Main circuit board faulty Incorrect configuration data Cycle cancelled START RESET E86 Selector configuration error Incorrect configuration of display board START ON OFF RE...

Page 20: ...nfiguration Main circuit board faulty Incorrect configuration data Cycle blocked RESET E9C Display board configuration error Display board faulty START ON OFF RESET E9F Communication error between main board and display board Faulty wiring Display board faulty Main board faulty ON OFF EA1 No drum position signal made DSP sensor faulty Transmission belt broken Main circuit board faulty Faulty wirin...

Page 21: ...nal spin phases skipped START RESET EF6 Reset If it continues replace the main board EH1 Power supply frequency of appliance outside the limits Problem with the power supply network incorrect disturbed Main circuit board faulty Wait for nominal frequency conditions ON OFF EH2 Supply voltage too high Problem with the power supply network incorrect disturbed Main circuit board faulty Wait for nomina...

Page 22: ...e remains in alarm status until the mains frequency or voltage returns to acceptable values or the appliance is switched off programme selector set to 0 Only the family of the alarm H is displayed if the problem occurs during normal appliance operation The family plus the alarm are displayed if the problem occurs when the appliance is switched on The LEDs above or in the START PAUSE button flash a...

Page 23: ...cle is counted which does not include pauses delayed start time rinse hold time and soaking phases the precision of the counter is 30 seconds per programme only whole hours of operation are counted 1 hr and 59 min 1 hr 5 1 Reading the operating time Do not start the procedure with the combination buttons pressed Series 6 Series 7 Turn the appliance on at the ON OFF switch Turn the selector in a cl...

Page 24: ...time is 6 550 hours the display will show the following sequence Phase 1 Phase 2 Phase 3 For two seconds the following is displayed Hr For two seconds the following digits are displayed ª thousands 6 ª hundreds 5 For the next two seconds the following digits are displayed ª tens 5 ª units 0 At the end of phase three after the tens and units are displayed the cycle is repeated To return to normal m...

Page 25: ...properly insert and remove No Replace repair wiring Yes Does the programme selector knob function mechanically No Replace repair knob Replace display board Yes Change the main circuit board Is the appliance working correctly No Replace display board Yes Run the diagnostics programme 6 2 Some of the LEDs on the circuit board light up Are the keys unobstructed through the control panel slots and do ...

Page 26: ...s too low and make sure the tubes are connected and not kinked Is one or are all the solenoid valves not working Replace the solenoid valve and repeat the diagnostic cycle to check for any further alarms Is the resistance measurement of the solenoid valve approximately 3 5 4 5 KΩ Measure it directly on the solenoid valve without wiring see Fig 3 Replace repair the wiring and repeat the diagnostic ...

Page 27: ...A D L 27 70 599 74 23 12 Rev 00 E11 MAIN CIRCUIT BOARD 3 5 4 5KΩ 3 5 4 5KΩ 3 5 4 5KΩ 1 Solenoid valve for Pre wash 2 Solenoid valve for Wash 1 2 Fig 3 If there are burns on the circuit board see page 68 Fig 1 Fig 2 Fig 4 ...

Page 28: ...not kinked Is one or are all the solenoid valves not working Replace the solenoid valve and repeat the diagnostic cycle to check for any further alarms Is the resistance measurement of the solenoid valve approximately 3 5 4 5 KΩ Measure it directly on the solenoid valve without wiring see Fig 3 Replace repair the wiring and repeat the diagnostic cycle to check for any further alarms Reconnect the ...

Page 29: ...A D L 29 70 599 74 23 12 Rev 00 E13 MAIN CIRCUIT BOARD 3 5 4 5KΩ 3 5 4 5KΩ 3 5 4 5KΩ 1 Solenoid valve for Pre wash 2 Solenoid valve for Wash 1 2 Fig 3 If there are burns on the circuit board see page 68 Fig 4 Fig 1 Fig 2 ...

Page 30: ...he diagnostic cycle to check for any further alarms Is the resistance measurement of the pump approximately 155 182 Ω Measure it directly on the pump see Fig 5 Check replace the wiring and repeat the diagnostic cycle to check for any further alarms Is the pump rotor mechanically blocked or broken Is the pressure switch s water circuit efficient no clogging Replace the circuit board and repeat the ...

Page 31: ...Technical Support A D L 31 70 599 74 23 12 Rev 00 E21 MAIN CIRCUIT BOARD 155 200Ω 155 200Ω Drain pump If there are burns on the circuit board see page 68 Fig 1 Fig 4 Fig 5 ...

Page 32: ... replace the wiring and repeat the diagnostic cycle to check for any further alarms Measure it between connectors J5 4 J5 5 and the appliance body Fig 6 Is there any dispersion Replace the main circuit board and repeat the diagnostic cycle to check for any further alarms Replace the pump and repeat the diagnostic cycle to check for any further alarms Check replace the wiring and repeat the diagnos...

Page 33: ...Technical Support A D L 33 70 599 74 23 12 Rev 00 E23 Fig 5 MAIN CIRCUIT BOARD 155 182Ω Drain pump 155 182Ω Ω If there are burns on the circuit board see page 68 Fig 4 Fig 6 ...

Page 34: ...ring between the main circuit board and the analogue pressure switch ok and is it connected correctly on both sides Reconnect and or replace the wiring and repeat the diagnostic cycle to check for any further alarms Replace the analogue pressure switch and repeat the diagnostic cycle to check for any further alarms codes Is the appliance displaying the alarm code again Replace the main circuit boa...

Page 35: ...alogue pressure switch E32 Clean replace the tube and or the pressure chamber and repeat the diagnostic cycle completely to check for any further alarms Select a washing cycle After a few minutes has the appliance filled with water and is the motor running Check the drain system filter drain pump drain tube Is the appliance draining correctly Repair the drain circuit Appliance ok Replace the analo...

Page 36: ...tic cycle to check for any further alarms Run the diagnostic cycle at phase 8 Once the door has locked does the appliance start to fill with water Change the analogue pressure switch and repeat the diagnostic cycle to check for any further alarms Is the wiring between the main circuit board and the analogue pressure switch connected correctly on both sides Replace the main circuit board and repeat...

Page 37: ...system is unobstructed see Fig 8 Repeat the diagnostic cycle to check for any further alarms Replace reposition the belt and repeat the diagnostic cycle to check for any further alarms Replace the analogue pressure switch and repeat the diagnostic cycle to check for any further alarms E38 E38 Internal pressure chamber is clogged E38 The analogue pressure switch is not able to measure any variation...

Page 38: ...he door lock and repeat the diagnostic cycle to check for any further alarms Replace the door lock Is the appliance working correctly Check the mechanical coupling between the door lock and the door latch Is the system efficient Close the door correctly and repeat the diagnostic cycle to check for any further alarms Replace the door latch the door Replace the main circuit board and repeat the diag...

Page 39: ...hnical Support A D L 39 70 599 74 23 12 Rev 00 E41 device with 3 connections Fig 9 Ω Ω n Ω n Ω MAIN CIRCUIT BOARD Door Lock traditional with flange If there are burns on the circuit board see page 68 Fig 4 ...

Page 40: ...cycle to check for any further alarms Replace the door lock Is the appliance working correctly Check the mechanical coupling between the door lock and the door latch Is the system efficient Close the door correctly and repeat the diagnostic cycle to check for any further alarms Replace the door latch the door Replace the main circuit board and repeat the diagnostic cycle to check for any further a...

Page 41: ...hnical Support A D L 41 70 599 74 23 12 Rev 00 E42 device with 3 connections Fig 9 Ω Ω n Ω n Ω MAIN CIRCUIT BOARD Door Lock traditional with flange If there are burns on the circuit board see page 68 Fig 4 ...

Page 42: ...check for any further alarms Replace the circuit board and repeat the diagnostic cycle to check for any further alarms Measure the continuity between connector J5 main circuit board and the door lock connector Is the wiring ok Replace the wiring and repeat the diagnostic cycle to check for any further alarms Replace the circuit board and repeat the diagnostic cycle to check for any further alarms ...

Page 43: ...lling the door delay system E45 Replace the circuit board and repeat the diagnostic cycle to check for any further alarms Replace the circuit board and repeat the diagnostic cycle to check for any further alarms Check that all the connectors are correctly inserted Check that all the connectors are correctly inserted If there are burns on the circuit board see page 68 ...

Page 44: ...shown replace the motor and repeat the diagnostic cycle to check for any further alarms Check for any water residue on the motor motor connector Is there any water Detach the connector from the motor and measure between the terminals and the motor casing see Fig 10 Is there any dispersion YES NO NO NO Y E S YES If there are burns on the circuit board see page 91 Ω Ω General earthing connection MAI...

Page 45: ...ck for any further alarms Measure between the same terminals of the wiring connector J11 6 and J11 7 and the appliance body Is there any dispersion see Fig 6 Check the positioning of the tachometric generator Is it correct see Fig 12 Replace the main circuit board and repeat the diagnostic cycle to check for any further alarms Replace the motor generator and repeat the diagnostic cycle to check fo...

Page 46: ...Technical Support A D L 46 70 599 74 23 12 Rev 00 E52 Ω xxxΩ xxxΩ Ω General earthing connection Fig 12 Fig 10 Fig 11 MAIN CIRCUIT BOARD If there are burns on the circuit board see page 68 Fig 4 Fig 6 ...

Page 47: ...1 1 and J11 5 where featured a value as in point 4 D must be found half field stator between J11 3 and J11 4 a value as in point 4 C rotor must be found Are the values correct Replace the circuit board and repeat the diagnostic cycle to check for any further alarms Check the motor as on page 40 Is the motor ok The motor never runs Replace the motor and repeat the diagnostic cycle to check for any ...

Page 48: ...ndividual winding according to the following table Fig 11 MOTORS MOTOR TERMINAL BOARD TERMINALS CHECK NMSC AP C ECM A 6 7 Tachometric generator winding 184 Ω 68 7 Ω 91 Ω B 2 5 Stator winding Full field 1 1 2 2 Ω 1 62 2 12 Ω 1 46 1 95 Ω C 3 4 Rotor winding plus thermal cutout 1 6 1 8 Ω 1 9 2 42 Ω 2 2 3 Ω D 1 5 Stator winding half field 0 55 0 56 Ω 0 67 Ω 0 68 Ω The tolerance of the resistance of wi...

Page 49: ...s with the sensing circuit of the component Triac powering the motor E53 Replace the circuit board and repeat the diagnostic cycle to check for any further alarms Check that all the connectors are correctly inserted If there are burns on the circuit board see page 68 ...

Page 50: ...ce body see page 47 point 3 Is there any dispersion see Fig 6 Detach the connector from the motor and measure between the terminals and the motor casing see Fig 10 Is there any dispersion Replace the motor and repeat the diagnostic cycle to check for any further alarms Check replace the wiring and repeat the diagnostic cycle to check for any further alarms YES NO Fig 10 NO YES Ω Ω MAIN CIRCUIT BOA...

Page 51: ... 2 and the appliance body See fig 6 Is the circuit open Detach the connector and measure between the heating element and the earth contact see Fig 15 Is the circuit open Replace the heating element and repeat the diagnostic cycle to check for any further alarms Check replace the wiring and repeat the diagnostic cycle to check for any further alarms Detach the connector and measure the value direct...

Page 52: ...rms Detach the connector J6 and measure between the heating element and the earth contact Fig 15 Is the circuit open Replace the heating element and repeat the diagnostic cycle to check for any further alarms Check replace the wiring and repeat the diagnostic cycle to check for any further alarms YES NO YES NO Fig 15 MAIN CIRCUIT BOARD Ω Ω Ω General earthing connection Washing heating element If t...

Page 53: ...h contact see Fig 15 Is the circuit open Run phase 8 of the diagnostic cycle drain water from the tub Replace the heating element and repeat the diagnostic cycle to check for any further alarms Check replace the wiring and repeat the diagnostic cycle to check for any further alarms Replace the main circuit board and repeat the diagnostic cycle to check for any further alarms YES NO MAIN CIRCUIT BO...

Page 54: ...stance value directly on the terminals of the heating element detach the connectors See fig 13 Is the value correct 28 31Ω for 230V 1750W Replace the heating element and repeat the diagnostic cycle to check for any further alarms Check replace the wiring and repeat the diagnostic cycle to check for any further alarms Fig 13 NO Y E S NO Y E S MAIN CIRCUIT BOARD General earthing connection Washing h...

Page 55: ... board and repeat the diagnostic cycle to check for any further alarms Detach the connector and measure between the heating element and the earth contact see Fig 15 Is the circuit open Run phase 8 of the diagnostic cycle drain water from the tub Replace the heating element and repeat the diagnostic cycle to check for any further alarms Check replace the wiring and repeat the diagnostic cycle to ch...

Page 56: ...NTC connector and the appliance body see Fig 6 Is there any dispersion Check replace the wiring and repeat the diagnostic cycle to check for any further alarms Detach the connector and measure directly between the terminals of the NTC probe and the appliance body there must be water in the tub Has the dispersion been measured Replace the circuit board and repeat the diagnostic cycle to check for a...

Page 57: ...3 KΩ at 20 C Is the probe visibly positioned correctly in its seat See Fig 17 Reposition the probe in its seat and repeat the diagnostic cycle to check for any further alarms Replace the washing heating element and repeat the diagnostic cycle to check for any further alarms WARNING DRAIN THE WATER FROM THE TUB BECAUSE IT IS BOILING HOT Replace the washing heating element and repeat the diagnostic ...

Page 58: ...ard and repeat the diagnostic cycle to check for any further alarms Repeat the diagnostic cycle to check for any further alarms NO YES Replace the display board and run the diagnostic cycle to check for any further alarms Check for any friction between the control panel and the knob Is it difficult to turn the knob NO YES Repair the coupling between the control panel selector knob Repeat the diagn...

Page 59: ...asure the continuity between connector J10 main circuit board and J3 display board Is the wiring ok Replace the main circuit board and repeat the diagnostic cycle to check for any further alarms Is the appliance still displaying E91 Replace repair the wiring and repeat the diagnostic cycle to check for any further alarms NO Y E S Appliance ok NO Replace the display board and repeat the diagnostic ...

Page 60: ...he circuit board and repeat the diagnostic cycle to check for any further alarms 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 Check that all the connectors are correctly inserted Incorrect configuration possible Replace the circuit board and repeat the diagnostic cycle...

Page 61: ...e body to see if there is any dispersion Fig 6 and table 1 Is there any dispersion Replace the main circuit board and repeat the diagnostic cycle to check for any further alarms Does the appliance fill with water even when it is turned off Replace the main circuit board and repeat the diagnostic cycle to check for any further alarms Replace the wiring and repeat the diagnostic cycle to check for a...

Page 62: ...lter This is an excessive detergent dosing warning The system detected too much foam was forming during the drain phases Advise the Customer to use the correct quantity of detergent and to make sure the filter and drain circuit are clean This warns about the presence of water at the bottom of the appliance Check for any water leaks and that the Aqua Control device float is positioned correctly Or ...

Page 63: ...nd the diagnostics mode cannot be accessed The complete alarm can only be read when the situation has normalised Is the supply line disturbed or the mains voltage out of range Replace the main circuit board and repeat the diagnostic cycle to check for any further alarms Have the electrical system of the home checked repaired by the proper Body Important The appliance remains in alarm status until ...

Page 64: ...the electrical system of the home checked repaired by the proper Body Important The appliance remains in alarm status until the mains voltage returns to the correct values or the appliance is switched off programme selector set to 0 Only the family of the alarm is displayed and the diagnostics mode cannot be accessed The complete alarm can only be read when the situation has normalised NO Y E S If...

Page 65: ...Technical Support A D L 65 70 599 74 23 12 Rev 00 8 OPERATING CIRCUIT DIAGRAM WM WITH AQUA CONTROL ...

Page 66: ...noid 6 Wash solenoid 7 Tachometric generator motor 8 Motor 9 Heating element 10 DSP 11 Display board 12 Aqua control sensor 13 Drain pump DRAIN_YTY Drain pump Triac DOOR_TY Door interlock Triac PWELT_TY Pre wash solenoid Triac WELV_TY Wash solenoid Triac MOTOR_TY Drum rotation motor Triac K1 Heating element relay K2 Heating element relay K3 Clockwise motor rotation relay K4 Anti clockwise motor ro...

Page 67: ...10 4 GND J13 J11 J13 1 Wash solenoid valve Triac J13 2 J13 3 Solenoid valves line J13 4 Solenoid valves line J13 5 J13 6 Pre wash solenoid valves Triac J11 1 Motor stator half range J11 2 Motor stator full range J11 3 Motor rotor J11 4 Motor rotor J11 5 Motor Triac J11 6 Motor tachometric generator J11 7 Motor tachometric generator J5 J14 J5 1 Door lock Sensing Line J5 2 Door lock Line J5 3 Door l...

Page 68: ...er 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 The type of board illustrated is the one with the largest number of components other boards do not feature some of these components ...

Page 69: ...Technical Support A D L 69 70 599 74 23 12 Rev 00 Revisions Revision Date Description Written by Approved by on 00 04 2011 Document creation A D L A D L 04 2011 ...

Page 70: ...Technical Support A D L 70 70 599 74 23 12 Rev 00 Notes ...

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