Contents Purpose of this manual ........................5 Procedure ............................5 CONTROL PANELS OF FRONT-LOADING APPLIANCES..............6 CONTROL PANELS OF TOP-LOADING APPLIANCES................7 DIAGNOSTIC SYSTEM..........................8 ACCESS TO THE DIAGNOSTIC CYCLE ..................8 Exiting the diagnostic system ......................8 PHASES OF THE DIAGNOSTIC CYCLE ..................9 ALARMS ..............................
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BASIC CIRCUIT DIAGRAM........................56 8.1.1 Key to circuit diagram....................... 57 CONNECTORS ON CIRCUIT BOARD....................58 BURNING ON THE CIRCUIT BOARD EWM1100................59 4/59 2007-10 SOI/DT-mdm FCPD-dp Quality-fz 599 70 32-47...
The purpose of this Service Manual is to provide a simple and clear description of the procedure to be followed by service engineers when confronted by problems identified by the various alarm codes generated by appliances with the EWM1100 electronic control system.
4 DIAGNOSTIC SYSTEM 4.1 ACCESS TO THE DIAGNOSTIC CYCLE 1. Switch off the appliance. 2. Press and hold down the START/PAUSE button and the nearest OPTION button simultaneously (as represented in figure). 3. Holding down both buttons, switch the appliance on by turning the programme selector one position clockwise.
4.3 PHASES OF THE DIAGNOSTIC CYCLE Irrespective of the type of PCB and the configuration of the programme selector it is possible, after entering diagnostic mode, to perform diagnostics on the operation of the various components and to read the alarms by turning the programme selector clockwise.
5 ALARMS Displaying the alarms to the user The alarms displayed to the user are listed below: Door open Drain difficulty (dirty filter) Water fill difficulty (closet tap) AEG Version The alarms are represented through the flashing of the yellow LED, which is above the START-PAUSE button, and can be solved directly by the end user.
5.2 Reading the alarm codes It is possible to display the last three memorised alarms in the FLASH memory of the electronic board: • Enter diagnostic mode (par. 4.1). • Irrespective of the type of PCB and configuration, turn the programme selector clockwise to the tenth position.
Notes: • The first letter of the alarm code “E” (Error) is not displayed, since this letter is common to all alarm codes. • The alarm code “families” are shown in hexadecimal; in other words: → A is represented by 10 flashes →...
Rapid reading of alarm codes The last three alarm codes can be displayed even if the programme selector is not in the tenth position (diagnostics) or if the appliance is in normal operating mode (e.g. during the execution of the washing programme): →...
5.5 SUMMARY TABLE OF ALARMS Alarm Possible fault Action/machine status Reset Page Tap closed or water pressure too low; Drain tube improperly positioned; Water fill solenoid valve is faulty; Leaks from water circuit on pressure switch; Pressure switch Cycle is paused with door locked. START/RESET faulty;...
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Alarm Possible fault Action/machine status Reset Page Cycle blocked, door locked (after 5 PCB faulty; current leakage from motor or from wiring. RESET attempts). NTC sensor faulty; heating element faulty; wiring faulty; PCB faulty. The heating phase is skipped. START/RESET Safety drain cycle –...
5.6 Notes concerning certain alarm codes Configuration alarms E93: If these alarms are generated (when the appliance is switched on), operation of the appliance is blocked and all the LEDs light. The diagnostic procedure cannot be accessed; the only option is to switch the appliance OFF (by turning the selector to position “0”). Configuration alarm E94: For this alarm code, only the family for alarm “9”...
6 THE DIAGNOSTIC PROGRAMME CANNOT BE ACCESSED All LEDs on the circuit are board switched off 6.1.1 Replace or repair the power cable, check the No → Are the power cable and connection OK? connector Yes ↓ No → Does the suppressor function correctly? Replace the suppressor Yes ↓...
7 TROUBLESHOOTING ACCORDING TO ALARM CODES E11: Difficulty in filling during wash phase Maximum water fill time for each pressure switch level (this time is reset to zero each time the level is reached) Tests to be performed: Access the diagnostic cycle and duct water through all the compartments (phases 2,3,4) Is water ducted through all the compartments? Is the drain hose positioned...
E13: Water leakage Overall maximum water fill time exceeded (the sum of all the water fills between one drain phase and the next, to avoid exceeding the maximum volume) Tests to be performed: Access the diagnostic cycle and duct water through all the compartment (phases 2,3,4) Is water ducted through all the compartments? Is the drain hose positioned...
E21: Difficulties in draining Maximum drain time exceeded (measured for each phase of the cycle) Tests to be performed: Clean the filter and restart the diagnostic cycle Is the drain filter clean? to check for further alarm conditions. Is the drain system OK? (drain hose and Disconnect and check the drain system.
E23: Malfunction of the component (triac) that controls the drain pump Tests to be performed: Is the resistance of the pump Is the resistance of the pump Replace the pump and restart about 150-200 Ω? (measure about 150-200 Ω? the diagnostic cycle to check for further alarm conditions.
E24: «Sensing» circuit of the component (triac) that controls the drain pump faulty Replace the circuit board and restart the diagnostic cycle to check for further alarm conditions. If there are traces of burning on the circuit board, refer to page The analogic pressure switch is giving to the main board a signal outside the range Tests to be performed:...
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The analogic pressure switch is giving an error during the calibration phase (At the beginning of each cycle the appliance drain to empty the tub and create a 0 level to verify the calibration of the analogic pressure switch) Tests to be performed: Drain the water from the tub.
E35: Water level too high The electronic board measures a water level from analogic pressure switch higher then 300 mm for more then 15 seconds. Tests to be performed: Empty the machine. Clean/change the hoses and/or air trap Are pressure switch hose and air trap system and repeat completely the system free? (You can disconnect the diagnostic cycle to check for further...
E38: Pressure chamber blocked The analogic pressure switch is not able to measure any variation of the water level for at least 30-sec. during drum movement. Tests to be performed: Empty the machine. Clean the air trap Get inside the Verify the air trap system and/or the diagnostic cycle and...
E3A: Problems with “Sensing” circuit of the heating element relay Tests to be performed: Replace the circuit board and run the diagnostic cycle again to check for further alarm conditions. 29/59 2007-10 SOI/DT-mdm FCPD-dp Quality-fz 599 70 32-47...
E41: Door open Maximum time exceeded (PTC = 15 seconds) Tests to be performed: Close the door correctly and restart the diagnostic cycle to check for further alarm Is the door correctly closed? conditions. Detach the connectors and Replace the door effect measurement on the To check the wiring (with the door interlock and...
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Fig.4 ∞ Ω Circuit board n Ω fig. 9 If there are traces of burning on the circuit board, refer to page 31/59 2007-10 SOI/DT-mdm FCPD-dp Quality-fz 599 70 32-47...
E42: Problems with door aperture Maximum time exceeded (255 seconds) Detach the connectors and Tests to be performed: effect measurement on the component (fig. 9): - across connectors 3 and 5 To check the wiring (with the door the circuit must not be open open), measure the following (the resistive value should wiring connectors (fig.
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E43: Problems with the triac which actions the door interlock Tests to be performed: Replace the door Detach the connectors and To check the wiring, (with the door interlock and effect measurement on the open), measure the following restart the component (fig.
E44: Door closure «sensing» circuit faulty Tests to be performed: Replace the circuit board and restart the diagnostic cycle to check for further alarm conditions. E45: Problems with the «sensing» circuit of the triac that actions the door interlock Tests to be performed: Replace the circuit board and restart the diagnostic cycle to check for further alarm conditions.
E51: Motor power triac short-circuited Intervention of the safety system for short-circuiting of the triac (after 5 attempts during the cycle, immediately if detected at the start or during diagnostics) Tests to be performed: Measure among all the E52 will probably be Reconnect the connector J7 to terminals of wiring connector displayed: replace the...
E52: No signal from the motor tachometric generator (first part) detected at the start or during Cycle blocked after 5 attempts during the cycle or immediately if diagnostics. Tests to be performed: Perform phase 7 of the diagnostic cycle (the drum rotates at Does the 55 rpm clockwise 55 motor rotate...
E52: No signal from the motor tachometric generator (second part) detected at the start or during Cycle blocked after 5 attempts during the cycle or immediately if diagnostics. Tests to be performed: The motor does not rotate at all. To check the wiring, measure (Ω) across the following terminals of the circuit board connector (fig.4) and compare with the correct values...
Procedure for checking the commutator motors P = motor protector 1) Check the connector blocks (wiring) R = rotor S = stator and check for detached or bent T = tachometric generator terminals. 2) Check for traces, residue or deposits of water or detergent on the motor and identify the source.
E53: Problems with the "Sensing" circuit of the triac which powers the motor Tests to be performed: Replace the circuit board and restart the diagnostic cycle to check for further alarm conditions. If there are traces of burning on the circuit board, refer to page 40/59 2007-10 SOI/DT-mdm FCPD-dp Quality-fz...
E54: Motor relay contacts sticking Voltage in the motor circuit even when the motor should be inoperative Tests to be performed Measure between all terminals of wiring connector J7-2 ÷ J7-8 and the structure of Replace the circuit board and restart the the appliance diagnostic cycle to check for further see page 39, point 3...
E61: Insufficient heating during washing Maximum heating time exceeded SOMETIMES THE ALARM CAN BE CAUSED BY THE POWER VOLTAGE TOO LOW! Tests to be performed: Detach the connector and Measure the value of the Replace the NTC measure the value directly NTC sensor across contacts temperature sensor and on the NTC sensor.
E62: Overheating during washing The temperature of the NTC sensor exceeds 88°C for more than 5 minutes Tests to be performed: Start the diagnostic cycle Detach the connector and Replace the heating and fill with water up to the measure across the heating element and restart the level of the door to ensure element and the ground...
E66: The contacts of the heating element power relay are always closed Tests to be performed: Measure across connector J2-1/J2-2 on the Replace the circuit board and restart the circuit board and the structure of the appliance. diagnostic cycle to check for further alarm (Fig.
E68: Washing heating element leaks current Tests to be performed: Replace the heating Detach the connector and Start the diagnostic cycle element and restart the measure across the heating and fill with water up to the diagnostic cycle to check element and the ground level of the door to ensure for further alarm...
E69: Washing heating element interrupted Tests to be performed: Measure the heating Measure the ohmic value Replace the heating directly on the terminals of element and restart the element value (Ω) across the heating element (detach terminals J2-2 ÷ J2-1of the diagnostic cycle to check the connectors) for further alarm...
E71: NTC washing sensor faulty Voltage not within limits (short-circuited or open) Tests to be performed: Detach the connector Perform phase 6 of the diagnostic Replace the NTC and measure the NTC cycle and wait until the fill ends. Switch sensor and restart the sensor directly.
E74: NTC sensor wrongly positioned Tests to be performed: Position the sensor again into its seat Is the sensor correctly positioned? and restart the diagnostic cycle to check -see fig.17- for further alarm conditions. Measure the value of the NTC sensor Replace the sensor and restart the diagnostic cycle to check for further (5.7÷6.3KΩ...
E82: Error in reading the RESET/OFF position of the programme selector Reading of position “0” of the selector when the appliance is switched on, or configuration error Tests to be performed: Restart the diagnostic Switch the appliance on and Switch the appliance OFF cycle to check for further turn the programme selector (selector position “0”).
E83: Error in reading the programme selector code Code for the position of the selector not included in configuration data or configuration error Tests to be performed: Restart the diagnostic Switch the appliance on and cycle to check for further turn the programme selector alarm conditions.
E93: Incorrect machine configuration Incongruence in configuration values when switching on Tests to be performed: Possible configuration error Replace the circuit board and restart the diagnostic cycle to check for further alarm conditions. E94: Incorrect configuration of washing cycle Incongruence in configuration values when switching on Tests to be performed Possible configuration error Replace the circuit board and restart the diagnostic cycle to check for further alarm conditions.
EA1: Drum positioning system (DSP) faulty (top-loaders) No signal or discontinuous signal from the sensor for more than 10 seconds during actioning of the motor to position the drum Tests to be performed: Replace the belt/pulley and restart Is the drive belt OK? Is the pulley OK? Is the ferrite plate the diagnostic cycle to check for positioned correctly? further alarm conditions.
EA6: Drum flap faulty (top-loaders) Cycle immediately blocked if a not correct tachometric signal is identified for at least 3 seconds. Tests to be performed: Detach the connector Measure across the Open the door and Replace the from the motor and terminals of the wiring manually check if motor or the...
EH1: Incorrect mains frequency The power supply frequency is not within the configured limits Tests to be performed: Important! The appliance remains in alarm mode until the frequency returns to the correct value or the appliance is switched off (programme selector on “0”). Only the family of the alarm is displayed, and the diagnostic cycle cannot be started.
EF1: Drain hose blocked/throttled/too high; drain filter dirty/blocked It is a warning that appears only at the end of the cycle. The machine has detected long draining phases during the cycle (Es. More then 20 seconds during draining after rinsing phase). Check/clean the drain filter.
8.1.1 Key to circuit diagram Electrical components on appliance Components on main board 1. Analogue pressure switch DOOR_TY Door interlock Triac 2. NTC temperature sensor DRAIN_TY Drain pump Triac 3. Solenoid valve for prewash Heating element relay 4. Solenoid valve for wash Motor relay: clockwise rotation 5.
10 BURNING ON THE CIRCUIT BOARD EWM1100 In case of burning on the main circuit board, check that the problem is not caused by another electrical component (short-circuits, poor insulation, water leakage). Refer to the figures below in order to identify the component that might have caused the burning according to the position of the burned area.