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Electrolux EWM 1000 Diagnostics & Faultfinding

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EWM 1000
DIAGNOSTICS
&
FAULTFINDING
TSE-N / A.S.
February 2002
1

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Summary of Contents for Electrolux EWM 1000

  • Page 1 EWM 1000 DIAGNOSTICS & FAULTFINDING TSE-N / A.S. February 2002...
  • Page 2 Diagnostic mode Access To enter the diagnostic mode, press START/ PAUSE and one option button simultaneously, and turn programme selector to the first position clockwise, until LEDs start flashing (position of pushbuttons is configurable, and may vary). TSE-N / A.S. February 2002...
  • Page 3 Diagnostic mode Access (vertical configuration) To enter the diagnostic mode, press the upper two pushbuttons on the left-hand side simul- taneously (irrespective of their function), and turn programme selector to the first position clockwise, until LEDs start flashing. TSE-N / A.S. February 2002...
  • Page 4 Diagnostic mode Component actuation 1 Checked functions: • User interface functionality Actuated components: • all LEDs light in sequence • if a pushbutton is depressed, the corresponding LED lights, and buzzer sounds if applicable Conditions: • none TSE-N / A.S. February 2002...

  • Page 5: Diagnostic Mode

    Diagnostic mode Component actuation 2 Checked functions: • Water fill main wash compartment Actuated components: • Door lock • Main wash solenoid valve Conditions: • door closed • water level below safety (overflow) level • time-out 5 min TSE-N / A.S. February 2002...
  • Page 6 Diagnostic mode Component actuation 3 Checked functions: • Water fill prewash compartment Actuated components: • Door lock • Prewash solenoid valve Conditions: • door closed • water level below safety (overflow) level • time-out 5 min TSE-N / A.S. February 2002...
  • Page 7 Diagnostic mode Component actuation 4 Checked functions: • Water fill fabric conditioner compartm Actuated components: • Door lock • Main wash and prewash solenoid valves (simultaneously) Conditions: • door closed • water level below safety (overflow) level • time-out 5 min TSE-N / A.S.
  • Page 8 Diagnostic mode Component actuation 5 Not applicable to EWM1000 machines (checks 3 solenoid valve) TSE-N / A.S. February 2002...
  • Page 9 Diagnostic mode Component actuation 6 Checked functions: • Heating Actuated components: • Door lock • Main wash solenoid valve if level below first level • Heating element Conditions: • door closed • water level above first level • water temperature below 80°C •...
  • Page 10 Diagnostic mode Component actuation 7 Checked functions: • Tub leakage test Actuated components: • Door lock • Main wash solenoid valve if level below first level • Motor (55 rpm CW, 55 rpm CCW, 250 rpm impulse with water in tub) Conditions: •...
  • Page 11 Diagnostic mode Component actuation 8 Checked functions: • Draining • Spinning • Pressure switch level congruence Actuated components: • Door lock • Drain pump • Motor (650 rpm, then max spin speed) Conditions: • door closed • water level below antiboil level at start of spin movement TSE-N / A.S.
  • Page 12 Diagnostic mode Component actuation 9 Not applicable to front-loaded machines (checks 3 drum self-positioning ) TSE-N / A.S. February 2002...
  • Page 13 Diagnostic mode Reading the last alarm code If an alarm code is stored in the EEPROM, this will be shown in hexadecimal code by 2 flashing LEDs: CYCLE END and START/PAUSE TSE-N / A.S. February 2002...
  • Page 14 Diagnostic mode Reading the last alarm code If an alarm code is stored in the EEPROM, this will be shown by 2 flashing LEDs: CYCLE END and START/PAUSE TSE-N / A.S. February 2002...
  • Page 15 Diagnostic mode Reading the last alarm code ØCYCLE END shows the first digit of the alarm code (alarm family) ØSTART /PAUSE shows the second digit Øthe digits will be shown by a sequence of flashes (0.4 secs on, 0.4 secs off) HEX digit 1 2 3 4 5 6 7 8 9 A B Number of flashes 1 2 3 4 5 6 7 8 9 10 11...
  • Page 16 Diagnostic mode Reading the last alarm code An example: code LED CYCLE END START/PAUSE Time Time On / off Value On / off Value (secs) (secs) Pause Pause TSE-N / A.S. February 2002...
  • Page 17 Diagnostic mode Cancel the last alarm code ØMachine in diagnostic mode, programme selector in position 10 ØPress START/PAUSE and any option push- button simultaneously for at least 2 secs ØAll LEDs start flashing to confirm TSE-N / A.S. February 2002...
  • Page 18 Diagnostic mode Cancel alarm code vertical configuration ØMachine in diagnostic mode, programme selector in position 10 ØPress the upper two pushbuttons on the left- hand side simultaneously for at least 2 secs ØAll LEDs start flashing to confirm TSE-N / A.S. February 2002...
  • Page 19 Diagnostic mode Exit Øto exit the diagnostic mode, switch the appliance. Øthen switch it ON, and switch it OFF AGAIN (this is to avoid the machine go into factory test mode when a diagnostic mode is selected again) TSE-N / A.S. February 2002...
  • Page 20 Alarms shown in the user mode ØOnly the alarm family (first digit of the code) is shown to the user LED CYCLE END by the flashing LED Time On / off Value CYCLE END (secs) Øfor example E41 or E43 will be shown as: Øalarm conditions E61, E83, or EA1 will not be...
  • Page 21 Quick reading of alarm codes ØThe last alarm can be read even if the machine is not in the diagnostic mode: ØPress START/PAUSE and any option pushbutton simultaneously for at least 2 seconds Ø All LEDs extinguish an then show the full alarm code ØThe sequence will be repeated as long as the 2 pushbuttons are kept depressed TSE-N / A.S.
  • Page 22 Alarm code family 1: Water fill ØE11: water fill problems in wash cycle (time-out expired) ØE13: water leakage TSE-N / A.S. February 2002...
  • Page 23 Alarm code family 2: Draining ØE21: drain problems (time-out expired) ØE23: drain pump triac failure ØE24: drain pump triac sensing failure TSE-N / A.S. February 2002...
  • Page 24 Alarm code family 3: Pressure switch ØE33: incongruency between antiboil and level switches (longer than 3 secs) ØE35: water overfill (antiflood level switch open for more than 15 seconds) ØE36: antiboil sensing (AB_S) failure ØE37: 1 level sensing (L1_S) failure ØE39: antiflood sensing (HV1_S) failure TSE-N / A.S.
  • Page 25 Alarm code family 4: Door lock ØE41: door open (time-out expired) ØE42: door lock failure ØE43: door lock triac failure ØE44: closed door sensing failure ØE45: door lock triac sensing failure TSE-N / A.S. February 2002...
  • Page 26 Alarm code family 5: Motor circuit ØE51: motor triac short circuit ØE52: no tachometer signal from motor ØE53: motor triac sensing failure ØE54: motor (reversing) relay contact always closed TSE-N / A.S. February 2002...
  • Page 27 Alarm code family 6: Heating circuit ØE61: insufficient heating in wash cycle (time-out expired) NOT SHOWN IN USER MODE ! ØE62: overheating during wash cycle (temp. on NTC > 88°C for more than 5 min.) ØE66: heating relay failure TSE-N / A.S. February 2002...
  • Page 28 Alarm code family 7: NTC sensor ØE71: NTC sensor failure (value out of limits) TSE-N / A.S. February 2002...
  • Page 29 Alarm code family 8: Programme selector ØE82: wrong selector reset position selection ØE83: wrong selector reading NOT SHOWN IN USER MODE ! TSE-N / A.S. February 2002...
  • Page 30 Alarm code family 9: Configuration ØE93: machine configuration error ØE94: cycle configuration error ØE95: communication error between microprocessor and EEPROM ØE96: incongruence between circuit board configuration and hardware ØE97: incongruence between programme selector and cycle configuration table TSE-N / A.S. February 2002...
  • Page 31 Alarm code family A: ØEA1: DSP (door self-positioning on top-loaded machines only) NOT SHOWN IN USER MODE ! TSE-N / A.S. February 2002...
  • Page 32 Alarm code family B: Power supply ØEB1: power supply frequency out of limits ØEB2: power supply voltage too high ØEB3: power supply voltage too low TSE-N / A.S. February 2002...
  • Page 33 Component Diagnostic Connector Identification TSE-N / A.S. February 2002...
  • Page 34 Component Diagnostic J1 = Motor connector J1-1 to J1-2: full stator winding: 1 - 3 Ω (depending on type of motor) TSE-N / A.S. February 2002...
  • Page 35 Component Diagnostic J1 = Motor connector J1-1 to J1-3: half stator winding: 0.5 - 1.5 Ω (on machines with > 1400 rpm) (depending on type of motor) TSE-N / A.S. February 2002...
  • Page 36 Component Diagnostic J1 = Motor connector J1-4 to J1-5: rotor winding: 1.5 - 3 Ω (depending on type of motor) TSE-N / A.S. February 2002...
  • Page 37 Motors TSE-N / A.S. February 2002...
  • Page 38 Component Diagnostic J2, J6 = Door lock, Pressure switches BIMETAL PTC DOOR LOCK ! J2-4 to J6-2: door lock bimetal PTC about 1 Ω TSE-N / A.S. February 2002...
  • Page 39 Component Diagnostic J2, J6 = Door lock, Pressure switches INSTANTANEOUS DOOR LOCK ! J2-4 to J6-2: solenoid + PTC protector about 200 Ω) TSE-N / A.S. February 2002...
  • Page 40 Component Diagnostic J2, J6 = Door lock, Pressure switches INSTANTANEOUS DOOR LOCK ! J2-5 to J6-2: bimetal PTC about 1 kΩ) TSE-N / A.S. February 2002...
  • Page 41 Component Diagnostic J2, J6 = Door lock, Pressure switches INSTANTANEOUS DOOR LOCK ! J2-4 to J2-5: solenoid + PTC protector + bimetal PTC about 1.2 kΩ) TSE-N / A.S. February 2002...
  • Page 42 Component Diagnostic J2, J6 = Door lock, Pressure switches DOOR LOCKS J2-1 to J6-2: door switch, open or closed TSE-N / A.S. February 2002...
  • Page 43 Component Diagnostic J2, J6 = Door lock, Pressure switches J2-1 to J2-2: “1 ” level press. switch, open if water below “1 ” level, closed if above TSE-N / A.S. February 2002...
  • Page 44 Component Diagnostic J2, J6 = Door lock, Pressure switches J6-1 to J2-2: antiboil level press. switch, open if water below this level, heating element resistance (about 30 Ω) if above TSE-N / A.S. February 2002...
  • Page 45 Component Diagnostic J2, J6 = Door lock, Pressure switches J2-3 to J2-6: antiflood level press. switch (not on all models !), normally closed TSE-N / A.S. February 2002...
  • Page 46 Component Diagnostic J3 = Solenoid Valves and Drain Pump J3-2 to J3-5: prewash solenoid valve about 3.75 kΩ TSE-N / A.S. February 2002...
  • Page 47 Component Diagnostic J3 = Solenoid Valves and Drain Pump J3-6 to J3-7: main wash solenoid valve about 3.75 kΩ TSE-N / A.S. February 2002...
  • Page 48 Component Diagnostic J3 = Solenoid Valves and Drain Pump J3-1 to J3-4: drain pump motor about 170 Ω TSE-N / A.S. February 2002...
  • Page 49 Component Diagnostic J5 = NTC and Tachogenerator J5-1 to J5-2: NTC sensor, about 6 kΩ at room temperature (see sensor characteristic for values at other temperatures) TSE-N / A.S. February 2002...
  • Page 50 NTC Characteristic TSE-N / A.S. February 2002...
  • Page 51 Component Diagnostic J5 = NTC and Tachogenerator J5-1 to J5-2: tachogenerator 65 to 540 Ω, depending on motor type. If motor is rotated by hand, a low AC voltage can be measured. TSE-N / A.S. February 2002...
  • Page 52 Motors TSE-N / A.S. February 2002...
  • Page 53 Component Diagnostic J4 = Provision for Door Pilot Lamp J4-1 to J4-2: door pilot lamp (only on few models !) TSE-N / A.S. February 2002...
  • Page 54 Component Diagnostic And J7 ?? J7 is the external serial interface: It may be used to connect the circuit board to a computer, and run configuration or diagnostic programmes from there TSE-N / A.S. February 2002...