Electrolux EWM10931 User manual

SERVICE MANUAL
WASHING
© ELECTROLUX ITALY S.p.A.
Spares Operation Europe
Corso Lino Zanussi, 30
Publication
number
I - 33080 PORCIA/PN (ITALY) 599 73 77-37
Fax [phone]
Edition: 01-2011
EN
Washing machines
guide to diagnostics of
electronic controls
EWM10931

Guide to diagnostics of electronic controls EWM10931
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Guide to diagnostics of electronic controls EWM10931
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Contents
1INTRODUCTION.................................................................................................................................. 5
1.1 Purpose of this manual .................................................................................................................. 5
1.2 Warnings....................................................................................................................................... 5
1.3 How to proceed ............................................................................................................................. 5
2WM APPLIANCE CONTROL PANELS ................................................................................................. 6
3DIAGNOSTIC SYSTEM........................................................................................................................ 7
3.1 Accessing diagnostics ................................................................................................................... 7
3.2 Quitting the diagnostics system ..................................................................................................... 7
3.3 Diagnostic test phases................................................................................................................... 8
4ALARMS ............................................................................................................................................ 10
4.1 Displaying the alarms to the user................................................................................................. 10
4.2 Reading the alarms ..................................................................................................................... 11
4.3 Rapid reading of alarms............................................................................................................... 12
4.4 Deleting the last alarm ................................................................................................................. 12
5OPERATING TIME COUNTER........................................................................................................... 13
5.1 Reading the operating time.......................................................................................................... 13
5.2 Display of total operating time...................................................................................................... 13
5.3 ALARM SUMMARY TABLE......................................................................................................... 14
5.4 Notes on the behaviour of certain alarms ..................................................................................... 18
6CANNOT ACCESS THE DIAGNOSTICS PROGRAMME.................................................................... 19
6.1 None of the LEDs on the circuit board light up ............................................................................. 19
6.2 Some LEDs come on, on the display board.................................................................................. 19
7TROUBLESHOOTING BASED ON ALARM CODES .......................................................................... 20
E11: Water fill difficulty during washing............................................................................................ 20
E13: Water leaks............................................................................................................................. 22
E21: Drain difficulty ......................................................................................................................... 24
E23: Problems with the component (triac) controlling the drain pump .............................................. 26
E24: “Sensing” circuit of the component (triac) controlling the drain pump faulty ............................. 28
E32: The analogue pressure switch causes an error during calibration ............................................ 29
E35: Water level too high ................................................................................................................ 30
E38: Internal pressure chamber is clogged...................................................................................... 31
E41: Door open (device with 4 connections).................................................................................... 32
E42: Problems opening door (device with 4 connections) ................................................................ 34
E43: Problems with the component (triac) controlling the door delay system (device with 4
connections) ................................................................................................................................... 36
E44: Door closed “sensing” circuit faulty.......................................................................................... 37
E45: Problems with the “sensing” circuit of the component (triac) controlling the door delay system. 37
E52: No signal from motor tachometric generator (first part)............................................................ 38
E52: No signal from motor tachometric generator (second part)....................................................... 40
E57: Inverter is drawing more than 16A current ............................................................................... 42
E58: Inverter is drawing more than 4A current ................................................................................. 44
E59: No signal from the tachometric generator ................................................................................ 46
E5A: Overheating on Inverter board heat dissipator......................................................................... 48
E5C: The Inverter board input voltage is too high (beyond 430V)..................................................... 49
E5d: Data transfer error between Inverter board and main circuit board........................................... 50
E5E: Communication error between Inverter board and main circuit board ..................................... 51
E5F: Inverter board fails to start the motor....................................................................................... 51
E5H: The Inverter board input voltage is too low (less than 175V) ................................................... 52
E62: Overheating during washing.................................................................................................... 53
E66: Heating element power supply relay faulty .............................................................................. 54
E68: Washing heating element leakage........................................................................................... 55
E69: Washing heating element damaged ........................................................................................ 56
E6A: Heating relay “sensing” faulty.................................................................................................. 57
E6H: Heating element power relay faulty (incongruence between “sensing” and relay status) ......... 57
E71: Washing NTC probe faulty ...................................................................................................... 58
E74: NTC probe improperly positioned ............................................................................................ 59
E83: Error reading the programme selector code............................................................................. 60
E86: Programme selector configuration error................................................................................... 60
E87: User Interface microcontroller defective...................................................................................60
E91: Communication error between the display board and the main circuit board ........................... 61
E92: protocol incongruence............................................................................................................. 62
E93: Appliance configuration error................................................................................................... 62

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E94: Incorrect configuration of washing cycle .................................................................................. 62
E97: Inconsistency between control selector version and configuration data................................... 62
E98: Communication error between main PCB and Inverter board .................................................. 62
E9C: Display board configuration error............................................................................................ 63
E9E: Display board sensor/touch key faulty..................................................................................... 63
EC1: Water fill solenoid valves blocked ........................................................................................... 64
EC2: Problem with weight sensor.................................................................................................... 65
EC3: Problem with weight sensor.................................................................................................... 66
EF1: Drain hose blocked/kinked/too high; drain filter clogged/dirty................................................... 67
EF2: Excessive detergent dosing; drain hose kinked/blocked; drain filter dirty/clogged .................... 67
EF3: Aqua Control device triggered................................................................................................. 67
EF4: Water fill pressure too low and solenoid valve open ................................................................ 67
EF5: Unbalanced load, spin phases skipped. .................................................................................. 67
EF6: Reset appliance...................................................................................................................... 68
EH1: Mains frequency incorrect....................................................................................................... 68
EH2: Supply voltage too high .......................................................................................................... 68
EH3: Supply voltage too low............................................................................................................ 69
EH4: “zero watt” relay not functioning.............................................................................................. 69
EHE: Inconsistency between safety relay (main circuit board) and safety “sensing” circuit .............. 69
EHF: Safety “sensing” circuit faulty.................................................................................................. 69
8WM OPERATING CIRCUIT DIAGRAM............................................................................................... 70
8.1 Key to circuit diagram WM ........................................................................................................... 71
8.2 Main circuit board connectors ...................................................................................................... 72
8.3 Burns on the main circuit board EWM10931 ................................................................................ 73

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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 EWM10931 series, NEW COLLECTION SERIES 7/8/9 version.
Depending on the appliance configuration, the alarms may be entirely or partially displayed to the user: the
latter solution is usually adopted.
The diagnostics system is used by Service Technicians to:
♦Read alarms
♦Delete the alarm stored
♦Test the appliance operation
1.2 Warnings
Any work on electrical appliances must only be carried out by qualified technicians.
The selector on 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 the appliance. It is strictly forbidden
to remove/exchange the NTC probes from one heating element
to another.
Always empty the appliance of all the water before laying it on its side.
Never place the appliance on its right side (electronic control system side): some of
the water in the detergent dispenser could leak onto the electrical/electronic
components and cause these to burn.
When replacing components, please refer to the code shown in the list of spare
parts relating to the appliance.
1.3 How to proceed
1. Identify the type of control in question (page 6) and access the diagnostic cycle (See page 7)
2. Read the alarm stored (page 11) and consult the instructions regarding the “alarm codes”, page 14÷17.
3. Delete the alarms stored (Page 12)
4. If you are unable to access the diagnosis mode, consult the chapter entitled “The diagnostics system
cannot be accessed” (page 19)
5. Should the main electronic circuit board need to be replaced, make sure there are no burns (See page 73)
6. After all intervention, check the appliance is operating correctly using the diagnostic cycle (page 8)
7. Delete any alarm that may have been stored during the diagnostics operations (page 12)

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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.
SERIES
7
SERIES
8
NEW COLLECTION
SERIES
9

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3 DIAGNOSTIC SYSTEM
3.1 Accessing diagnostics
All versions
SERIES 7 SERIES 8 SERIES 9
Do not start the procedure with the combination buttons pressed
1. Turn the appliance on at the ON/OFF switch and the first LED in the right-hand row turns on.
2. Press the START/PAUSE button and the nearest option button simultaneously (as shown in the figure).
3. Hold the buttons/sensors down/pressed until the LEDs and symbols begin 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 testing on the following page).
During this phase, if any key combination is pressed (except for the one relating to diagnostics), all the
combinations of options stored are deleted (Extra rinse, No buzzer, etc..) whereas for SERIES 9, the
memories with the customised programmes are also deleted
3.2 Quitting the diagnostics system
→To quit the diagnostics system, turn the selector dial to position 0, turn the appliance back on and return
the dial to position 0.

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3.3 Diagnostic test phases
Irrespective of the type of electronic board and of the selector configuration, once the diagnostics system has
been activated, turn the selector dial clockwise to run a check of the various components and read the 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).
TABLE 1
Selector
position Components activated Working conditions Function tested LCD display
1
-The LEDs, groups of symbols
in the LCD screen and the
backlight of the display are
turned on in sequence
-Press a button/sensor to turn on
the group of icons in the LCD
screen or the corresponding
LED and the buzzer sounds at
the same time
Always active User interface
functions
2
-Door safety interlock
-Wash solenoid
Door closed
Water level below
anti-flooding level
Maximum time
5 mins
Water fill
to wash
compartment Water level in
the tub (mm)
3
-Door safety interlock
-Pre-wash solenoid
Door closed
Water level below
anti-flooding level
Maximum time
5 mins
Water fill
directly to tub Water level in
the tub (mm)
4
-Door safety interlock
-Solenoid valve
pre-wash and wash
Door closed
Water level below
anti-flooding level
Maximum time
5 mins
Water fill to
conditioner
compartment Water level in
the tub (mm)
5
-Door safety interlock
-Third solenoid valve
Door closed
Water level below
anti-flooding level
Maximum time
5 mins
Water fill to
third solenoid
valve
compartment
Water level in
the tub is
displayed (mm)
6
-Door safety interlock
-Fourth solenoid valve (hot water
where featured)
Door closed
Water level below
anti-flooding level
Maximum time
5 mins
Water fill to
fourth solenoid
valve
compartment Water level in
the tub is
displayed (mm)
7
-Door safety interlock
-Wash solenoid, if the water in
the tub is not enough to cover
the heating element
-Heating element
-Weight sensor (an extra litre of
water is filled if featured)
Door closed
Water level above
the heating element.
Maximum time
10 mins or up to
90 °C (*)
Heating Temperature in
°C measured
using the NTC
probe

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8
-Door safety interlock
-Wash solenoid if the water level
in the tub does not cover the
heating element
-Motor (55 rpm clockwise,
55 rpm anticlockwise, pulse at
250 rpm)
Door closed
Water level above
the heating element
Check for leaks
from the tub Drum speed in
rpm/10
9
-Door safety interlock
-Drain pump
-Motor up to 650 rpm then at
maximum spin speed (**)
Door closed
Water level lower
than anti-boiling
level for spinning
Drain,
calibration of
analogue
pressure switch
and spin
Drum speed in
rpm/10
10 ------- ------- ----- ----
11
-Reading/Deleting the last alarm ------- -------
12
÷
16
-The LEDs, groups of symbols in
the LCD screen and the
backlight of the display are
turned on in sequence
-Press a button/sensor to turn on
the group of icons in the LCD
screen or the corresponding LED
and the buzzer sounds at the
same time
Always active User interface
functions
(*) In most cases, this time is sufficient to check the heating. However, the time can be increased by repeating the phase without draining the
water: pass for a moment to a different phase of the diagnostic cycle and then back to the heating control phase (if the temperature is higher
than 80 °C, heating does not take place).
(**) The check at the maximum speed occurs without control of the AGS and no garments must be inside the appliance.

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4 ALARMS
4.1 Displaying the alarms to the user
When a problem arises in the appliance, a “WARNING” or an “ALARM” is displayed with three digits, where
the time until the end of the cycle is represented.
Series 7 Series 8 Series 9
The alarms displayed to the user are listed below:
ªE10 - Water fill difficulty (tap closed)
ªE20 - Drain difficulty (filter dirty)
ªE40 - Door open
The alarms listed below:
ªEF0 – Water leakage (Aqua Control System)
For its solution, the intervention of a Service engineer is required
While for the alarm:
ªEH0 – Voltage or frequency outside the normal values
It is necessary 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 has occurred, on
condition that:
•The level of the water in the tub is below a certain level.
•The water temperature is lower than 55 °C.
•The motor has stopped.
Certain alarm conditions require a drain phase to be performed before the door can be opened for
safety reasons:
•Cooling water fill if the temperature is higher than 65 °C
•Drain until the analogue pressure switch is on empty, during a max. 3-minute time.

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4.2 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.
•To display previous alarms, press/touch the button/sensor to the left of the
START/PAUSE button in sequence (as shown in the figure)
•To return to the last alarm, press/touch the START/PAUSE button/sensor.
SERIES 7 SERIES 8 SERIES 9

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4.3 Rapid reading of alarms
The last alarm 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.
→The alarm continues to be displayed until a button is pressed.
→During the time that the alarm is displayed, the appliance continues to perform the cycle or, if you are in
the programme selection phase, it retains the options selected previously 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 7 Series 8 Series 9
1. Enter the diagnostic mode.
2. Turn the selector dial clockwise until the eleventh LED is turned on (in the left-hand alarm reading row).
3. Press/touch the START/PAUSE button/sensor and the nearest option button/sensor simultaneously
(as shown in the figure).
4. Hold down the buttons until the LCD display shows “E00” (at least 5 seconds).
N.B. With this operation all the alarms stored are deleted.

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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)
The precision of the counter is 30 seconds per programme
Only whole hours of operation are counted (1hr and 59 min = 1hr)
5.1 Reading the operating time
Do not start the procedure with the combination buttons pressed
1. Turn the appliance on at the ON/OFF switch.
2. Turn the selector dial clockwise until the fifth LED in the right-hand row is on.
3. Press the START/PAUSE button and the nearest option button simultaneously (as shown in the figure).
4. Hold down the buttons until the hours of operation appear on the display (at least 5 seconds).
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 the SERIES 7 and 8, while the time is displayed
in a single sequence for SERIES 9.
For example, if the operating 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:
ªthousands (6)
ªhundreds (5)
For the next two seconds
the following digits are
displayed:
ªtens (5)
ªunits (0)
SERIES
7/8
Phase 1 Phase 2
SERIES
9
At the end of phase three (after the tens and units are displayed), the cycle is repeated.
To return to normal mode, either: switch the appliance off or press a button or turn the selector knob.

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5.3 ALARM SUMMARY TABLE
Alarm Description Possible fault Machine status/action Reset Page
E00
E11 Water fill difficulty during washing
Tap closed or water pressure too low; Drain pipe improperly positioned;
Water fill solenoid valve faulty; Leaks from water circuit on pressure
switch; Pressure switch faulty; Wiring faulty; Main PCB faulty.
Cycle is paused with door locked START/RESET 20
E13 Water leaks
Drain pipe improperly positioned; Water pressure too low;
Water fill solenoid valve faulty; Water circuit on pressure switch is
leaking/clogged; Pressure switch faulty.
Cycle is paused with door locked START/RESET 22
E21 Drain difficulty during washing
Drain pipe kinked/clogged/improperly positioned; Drain filter
clogged/dirty; Wiring faulty; Pressure switch faulty; Drain pump rotor
blocked; Drain pump faulty; Main PCB faulty.
Cycle paused
(after 2 attempts)
START
ON/OFF
RESET
24
E23 Faulty triac for drain pump Wiring faulty; Drain pump faulty; Main PCB faulty. Safety drain cycle - Cycle stops with
door open. RESET 26
E24 Malfunction in “Sensing” circuit on
triac for drain pump Main circuit board faulty. Safety drain cycle - Cycle stops with
door unlocked RESET 28
E31 Malfunction in electronic pressure
switch circuit Wiring; Electronic pressure switch; Main PCB. Cycle stops with door locked RESET 28
E32
Calibration error of the electronic
pressure switch
Drain pipe kinked/clogged/improperly positioned; Solenoid valve
faulty; Drain filter clogged/dirty; Drain pump faulty; Leaks from
pressure switch hydraulic circuit; Pressure switch faulty;
Wiring; main PCB.
Cycle paused START/RESET 29
E35 Overflow Water fill solenoid valve faulty; Leaks from water circuit on pressure
switch; Wiring faulty; Pressure switch faulty; Main PCB faulty.
Cycle interrupted. Safety drain cycle.
Drain pump continues to operate (5 min.
on, then 5 min. off. etc.)
RESET 30
E38
Internal pressure chamber is clogged
(water level does not change for at
least 30 sec. of drum rotation)
Motor belt broken; Water circuit on pressure switch clogged. Heating phase is skipped RESET 31
E41 Door open
Check whether the door is closed properly;
Wiring faulty; Door safety interlock faulty;
Main circuit board faulty.
Cycle paused START/RESET 32
E42 Problems with door lock
Wiring faulty; Door safety interlock faulty;
Electrical current leak between heating element and ground;
Main PCB faulty.
Cycle paused START/RESET 34
E43 Faulty triac supplying power to door
delay system
Wiring faulty; Door safety interlock faulty;
Main circuit board faulty.
(Safety drain cycle)
Cycle blocked RESET 36
E44 Faulty sensing by door delay system Main circuit board faulty. (Safety drain cycle)
Cycle blocked RESET 37

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Alarm Description Possible fault Machine status/action Reset Page
E45 Faulty “Sensing” by door delay
system triac Main circuit board faulty. (Safety drain cycle) Cycle blocked RESET 37
E52 No signal from motor tachometric
generator
Wiring faulty; Motor faulty;
Inverter board faulty.
Cycle stops with door locked
(after 5 attempts)
ON/OFF
RESET 38/40
E57 Inverter is drawing too much current
(>15 A) Wiring faulty on inverter for motor; Inverter PCB faulty; Motor faulty. Cycle stops with door locked
(after 5 attempts)
ON/OFF
RESET 42
E58 Inverter is drawing too much current
(>4.5 A)
Motor malfunction (overload); Wiring faulty on inverter faulty; Motor
faulty; Inverter PCB faulty.
Cycle stops with door locked
(after 5 attempts)
ON/OFF
RESET 44
E59 No signal from tachometric
generator for 3 seconds Wiring faulty on inverter for motor; Inverter PCB faulty; Motor faulty. Cycle stops with door locked
(after 5 attempts)
ON/OFF
RESET 46
E5A Overheating on heat dissipator for
Inverter
Overheating caused by continuous operation or ambient conditions
(let appliance cool down); Inverter PCB faulty. NTC open (on the
Inverter PCB).
Cycle stops with door locked
(after 5 attempts)
ON/OFF
RESET 48
E5C Input voltage is too high Input voltage is too high (measure the grid voltage); Inverter
PCB faulty.
Cycle stops with door locked
(after 5 attempts)
ON/OFF
RESET 49
E5d Data transfer error between Inverter
and main PCB Line interference; Wiring faulty; Faulty main PCB or Inverter PCB. ---------------- ON/OFF
RESET 50
E5E Communication error between
Inverter and main PCB
Faulty wiring between main PCB and inverter PCB; Inverter PCB
faulty; Main PCB faulty.
Cycle blocked
(after 5 attempts)
ON/OFF
RESET 51
E5F Inverter PCB fails to start the motor Wiring faulty; Inverter PCB faulty; Main PCB faulty. Cycle stops with door open
(after 5 attempts)
ON/OFF
RESET 51
E5H Input voltage is lower than 175 V Wiring faulty; Inverter PCB faulty. Cycle stops with door locked
(after 5 attempts)
ON/OFF
RESET 52
E62
Overheating during washing
(temperature higher than 88 °C for
more than 5 min.)
Wiring faulty; NTC probe for wash cycle faulty; Heating element
faulty; Main PCB faulty.
Safety drain cycle
Cycle stops with door open RESET 53
E66
Heating element power relay faulty
(inconsistency between sensing and
relay status)
Main PCB faulty. Safety water fill
Cycle stops with door closed
ON/OFF
RESET 54
E68 Current leak to the ground Earth leakage between heating element and earth. The heating phase is skipped START/RESET 55
E69 Heating element interrupted Wiring faulty; Heating element for washing interrupted (thermal fuse
open); Main PCB faulty. ----------------
START
ON/OFF
RESET
56
E6A Heating relay sensing faulty Main circuit board faulty. Cycle stops with door locked RESET 57
E6H
Heating element power relay faulty
(inconsistency between sensing and
relay status)
Wiring faulty; Earth-leakage between heating element and earth;
Main PCB faulty.
Safety water fill
Cycle stops with door closed
ON/OFF
RESET 57
E71 NTC probe for wash cycle faulty
(short-circuited or open)
Wiring faulty; NTC probe for wash cycle faulty;
Main circuit board faulty. The heating phase is skipped START/RESET 58

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Alarm Description Possible fault Machine status/action Reset Page
E74 NTC probe for wash cycle
improperly positioned
Wiring faulty; NTC probe for wash cycle improperly positioned; NTC
probe faulty; Main PCB faulty. The heating phase is skipped RESET 59
E83 Error in reading selector Main PCB faulty (Incorrect configuration data). Cycle cancelled START/RESET 60
E86 Selector configuration error Display board. ----------------
START
ON/OFF
RESET
60
E87 User Interface microcontroller
defective Display board No action to be taken
START
ON/OFF
RESET
60
E91 Communication error between main
PCB and display
Wiring faulty; Control/display PCB faulty
Main circuit board faulty. ---------------- RESET 61
E92
Communication inconsistency
between main PCB and display
(incompatible versions)
Incorrect control/display PCB;
Incorrect PCB (does not correspond to the model). Cycle blocked ON/OFF 62
E93 Appliance configuration error Main PCB faulty (incorrect configuration data). Cycle blocked ON/OFF 62
E94 Incorrect configuration of
washing cycle Main PCB faulty (incorrect configuration data). Cycle blocked ON/OFF 62
E97 Inconsistency between programme
selector and cycle configuration Main PCB faulty (incorrect configuration data). Cycle blocked RESET 62
E98 Communication error between main
PCB - Inverter Incompatibility between main PCB and Inverter. Cycle blocked ON/OFF 62
E9C Display board configuration error Display board faulty. ----------------
START
ON/OFF
RESET
63
E9E Display board sensor/touch
key faulty Display board faulty. ---------------- ON/OFF 63
EC1 Electronically controlled valve
blocked with operating flowmeter Wiring faulty; Solenoid valve faulty/blocked, Main PCB faulty.
Cycle stops with door locked
Drain pump continues to operate (5 min.
on, then 5 min. off, etc.)
RESET 64
EC2 Data transfer error between Weight
sensor and main PCB Wiring faulty; Weight sensor faulty, PCB faulty. No action to be taken START/RESET 65
EC3 Problems with weight sensor (no
signal or outside the limits) Wiring faulty; Weight sensor faulty; Main PCB faulty. ---------------- START/RESET 66
EF1 Drain filter clogged
(drain phase too long)
Drain filter clogged/dirty.
Drain hose blocked/kinked/too high. Warning displayed at the end of cycle. START/RESET 67
EF2
Overdosing of detergent
(too much foam during drain
phases)
Excessive detergent dosing; Drain hose kinked/blocked.
Drain filter clogged/dirty.
Warning displayed after 5 attempts or
by the specific LED RESET 67
EF3 Aqua control system intervention Water leaks onto base frame; Aqua control system faulty. Appliance drains ON/OFF RESET 67

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Alarm Description Possible fault Machine status/action Reset Page
EF4
Water fill pressure too low, no signal
from flowmeter and electronically
controlled valve is open
Tap closed, water fill pressure too low. ---------------- RESET 67
EF5 Unbalanced load Final spin phases skipped. ---------------- START/RESET 67
EF6 Reset If it continues, replace the main board. No action to be taken ---------------- 68
EH1 Supply frequency of appliance
outside the limits
Problem with the power supply network (incorrect/disturbed); Main
PCB faulty.
Wait for nominal
frequency conditions ON/OFF 68
EH2 Supply voltage too high Problem with the power supply network (incorrect/disturbed); Main
PCB faulty.
Wait for nominal
voltage conditions ON/OFF 68
EH3 Supply voltage too low Problem with the power supply network (incorrect/disturbed); Main
PCB faulty.
Wait for nominal
voltage conditions ON/OFF 69
EH4 0Watt relay malfunction Main circuit board faulty. ---------------- ON/OFF
RESET 69
EHE
Inconsistency between FCV relay (in
the main board) and safety
“sensing” circuit
Faulty cabling; Main circuit board faulty. Safety drain cycle
Cycle stops with door open RESET 69
EHF Safety sensing circuit faulty (wrong
input voltage to microprocessor) Main circuit board faulty. Safety drain cycle
Cycle stops with door open RESET 69

Guide to diagnostics of electronic controls EWM10931
2011 SOE/DT-mdm FCPD-dp Quality-tb 18/75 599 73 77-37
5.4 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 button start to
flash, displaying the complete code (family plus alarm), the display shows the alarm code provided the relevant configuration part is intact.
It will not be possible to access diagnostics mode and the only available option is to turn the appliance off.
Configuration alarm E94: the LEDs in the START/PAUSE button start to flash, displaying the complete code (family plus alarm) and the code is also shown
on the display.
The diagnostics mode cannot be accessed and the “quick alarm viewing” mode cannot be used.
Alarms EH1-EH2-EH3: in the event of problems with the supply voltage, the appliance 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 in the START/PAUSE
button flash and the code is concurrently shown on the display.
The diagnostics mode cannot be accessed and the “quick alarm viewing” mode cannot be used: the alarm can only be read in full when the situation has
normalised.
Alarms E51- E52: all the alarms are displayed during diagnostic testing: normally, when shifting from one control phase to another, the appliance quits the
alarm mode and executes the selected phase. This is not the case for alarms E51 (motor power supply TRIAC short-circuiting) and E52 (no signal from motor
tachometric generator): the only choice to quit the alarm mode is to turn the programme selector to position “0” (reset).

Guide to diagnostics of electronic controls EWM10931
2011 SOE/DT-mdm FCPD-dp Quality-tb 19/75 599 73 77-37
6 CANNOT ACCESS THE DIAGNOSTICS PROGRAMME
6.1 None of the LEDs on the circuit board light up
Are the power supply cable and the connection
on the main board (connector J1)
working properly?
No →Replace/repair the power supply cable,
check the connection
Yes ↓
Is the communication wiring between the main
board (connector J4) and the display board
(connectors J2 and J3) working properly?
(insert and remove)
No →Replace/repair wiring
Yes ↓
Does the ON/OFF button function
mechanically? No →Replace/repair the button or
replace the 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 LEDs come on, on the display board
Are the keys unobstructed through the control
panel slots and do they activate the various
buttons correctly?
No →Sort out any mechanical problems
(control panel/buttons/pins)
Yes ↓
Change the display board and run the
diagnostics programme
MAIN CIRCUIT
BOARD
DISPLAY BOARD
GENERAL EARTHING
J1

Guide to diagnostics of electronic controls EWM10931
2011 SOE/DT-mdm FCPD-dp Quality-tb 20/75 599 73 77-37
Run the diagnostic cycle and fill all the trays with water (phases 2,3,4,5,6)
Are all the trays filling with water?
7 TROUBLESHOOTING BASED ON ALARM CODES
E11: Water fill difficulty during washing
E11 Maximum water fill time for every level of the pressure switch
(the time is reset every time the level is achieved)
E11
Repair the drain circuit and repeat
the diagnostic cycle to check for any
further alarms.
Repair the water circuit of the pressure switch
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.
Is the drain pipe positioned
correctly and not causing the siphon
effect? -(fig.1)-
Is the pressure switch's water circuit
efficient (leaking/clogged)?
-(fig.2)-
Check whether the tap is open, if the
water pressure is 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÷4.5k? (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 connector and measure
approximately 3.5÷4.5 KΩon the solenoid
valve wiring connector on the circuit board side
-(fig.4)-: Between J7-1 and J7-3 wash
Between J7-4 and J7-6 pre-wash
Between J8-1 and J8-3 third solenoid valve
Between J8-4 and J8-6 hot water
Is the solenoid valve wiring ok?
Replace the main circuit board and repeat
the diagnostic cycle to check for any
further alarms.
Repair the water circuit and repeat
the diagnostic cycle to check for any
further alarms.
Is the washing machine's water
circuit efficient (leaking)?
Y
E
S
NO
Y
E
S
Y
E
S
Y
E
S
Y
E
S
NO
NO
NO
N
O
NO
NO
Y
E
S
Y
E
S
Check that all the connectors are correctly inserted
!
If there are burns on the circuit
board, see page 73
!