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© ELECTROLUX Italia S.p.A..
Spares Operation Europe
Corso Lino Zanussi, 30
I - 33080 PORCIA /PN
Fax +39 0434 394096
Edition: 10-2010
Series 7
Series 8
Publication
number
599 73 54-08
EN
SERVICE MANUAL
WASHING
Top loading washing
machines
with electronic control
system
NEW
COLLECTION
EWM10
Demo
Diagnostics
Alarms table
7 / 8
SERIES
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Summary of Contents for Electrolux EWM10
- Page 1 SERVICE MANUAL WASHING Series 7 Series 8 Top loading washing machines © ELECTROLUX Italia S.p.A.. with electronic control Spares Operation Europe system Publication Corso Lino Zanussi, 30 number I - 33080 PORCIA /PN 599 73 54-08 COLLECTION Fax +39 0434 394096...
- Page 2 A.D.L. 10 / 2010 2/26 599 73 54-08...
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Page 3: Table Of Contents
INDEX PURPOSE OF THIS MANUAL ........................4 WARNINGS ..............................5 DEMO MODE ..............................6 DEMO MODE SETTING ........................... 6 Existing DEMO mode ..........................6 DIAGNOSTIC SYSTEM ........................... 7 Accessing diagnostics ..........................7 Quitting the diagnostics system ........................ 7 Diagnostic test phases ..........................8 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 EWM10 electronic control system (SERIES 7/8). -
Page 5: Warnings
2 WARNINGS Any work on electrical appliances must only be carried out by qualified technicians. This platform is not fitted with an ON/OFF switch. Before you access internal components, take the plug out of the socket to cut the power supply. If the heating element needs replacing, replace it with one featuring the same characteristics (2 thermal fuses) so as not to compromise the safety of... -
Page 6: Demo Mode
3 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 lock is enabled regularly (door locked during operation, possibility of opening it at the end of the cycle or when paused) All low speed movements of the motor, the pulses and spin are disabled. -
Page 7: Diagnostic System
4 DIAGNOSTIC SYSTEM Accessing diagnostics Do not start the procedure with the combination buttons pressed Serie 7 Serie 8 Turn the appliance on at the ON/OFF switch and the first LED in the right-hand row is turned on. Press the START/PAUSE button and the nearest option button simultaneously (as shown in the figure). -
Page 8: 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 (all alarms are enabled in the diagnostic cycle). - Page 9 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 10 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. • Heating element. •...
- Page 11 Position 10 Drum position Purpose of the test: To check the correct position of the drum via DSP • Drum motor. Components activated: • Door safety interlock. • Drum position sensor DSP • Door closed Working conditions: LCD display Position 11 Reading/Deleting the Purpose of the test: Reading/Deleting the last alarm...
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Page 12: Alarms
5 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 the time until the end of the cycle is represented. Series 7 Series 8 The alarms displayed to the user are listed below: E10 - Water fill difficulty (tap closed) -
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
6 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. -
Page 15: Display Of Total Operating Time
6.2 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 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. CLOSED THE Door open Cycle paused Door safety interlock faulty DOOR Main circuit board faulty. Faulty wiring. Door safety interlock faulty. Problems with door lock Cycle paused START/RESET Electrical current leak between heating element and ground.
- Page 19 Action Description Possible fault Reset Machine status Faulty wiring. No signal from motor tachometric ON/OFF Motor faulty; Cycle blocked with door locked after 5 attempts. generator RESET Inverter board faulty; Motor-inverter wiring faulty. Inverter is drawing too much ON/OFF Inverter board faulty. Cycle blocked with door locked after 5 attempts.
- Page 20 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 21 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 22 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 23 Action Description Possible fault Reset Machine status DSP sensor faulty. Transmission belt broken. No drum position signal made. Drum positioning cycle cancelled START/RESET Main circuit board faulty. Faulty wiring. DSP sensor faulty. No signal from the DSP during Transmission belt broken. START Cycle paused.
- Page 24 Action Description Possible fault Reset Machine status Supply frequency of appliance Problem with the power supply network (incorrect/disturbed). Wait for nominal frequency conditions ON/OFF outside the limits Main circuit board faulty. Problem with the power supply network (incorrect/disturbed). Supply voltage too high Wait for nominal voltage conditions.
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Page 25: Diagrams
7 DIAGRAMS WM diagram with THREE-PHASE ASYNCHRONOUS MOTOR A.D.L. 10 / 2010 25/26 599 73 54-08... -
Page 26: Key To Diagram
Key to diagram Appliance electrical components PCB components Main circuit board DOOR_TY Door interlock Triac Door safety interlock (without flange) DOOR_CLOSE_TY Door interlock Triac Electronic pressure switch PWELT_TY Pre-wash solenoid Triac NTC (washing) WELT_TY Wash solenoid Triac Flow sensor BELT_TY Electronically controlled TRIAC bleach valve Pre-wash solenoid HELT_TY...
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