EWM 1000 DIAGNOSTICS & FAULTFINDING

Transcription

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

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. 2

3 Diagnostic mode Access (vertical configuration) To enter the diagnostic mode, press the upper two pushbuttons on the left-hand side simultaneously (irrespective of their function), and turn programme selector to the first position clockwise, until LEDs start flashing. TSE-N / A.S. 3

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. 4

5 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. 5

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. 6

7 Diagnostic mode Component actuation 4 Checked functions: Water fill fabric conditioner compartm t 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. 7

8 Diagnostic mode Component actuation 5 Not applicable to EWM1000 machines (checks 3 rd solenoid valve) TSE-N / A.S. 8

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 time-out 10 min, or 90 C TSE-N / A.S. 9

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: door closed water level above first level TSE-N / A.S. 10

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. 11

12 Diagnostic mode Component actuation 9 Not applicable to front-loaded machines (checks 3 rd drum self-positioning ) TSE-N / A.S. 12

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. 13

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. 14

15 Diagnostic mode Reading the last alarm code CYCLE END shows the first digit of the alarm code (alarm family) START /PAUSE shows the second digit the digits will be shown by a sequence of flashes (0.4 secs on, 0.4 secs off) HEX digit A B F Number of flashes after a pause of 2.5 secs, the sequence will be repeated TSE-N / A.S. 15

16 Diagnostic mode Reading the last alarm code An example: code E43 LED LED CYCLE END START/PAUSE Time Time On / off Value On / off (secs) (secs) Pause Value TSE-N / A.S ,3 Pause

17 Diagnostic mode Cancel the last alarm code Machine in diagnostic mode, programme selector in position 10 Press START/PAUSE and any option pushbutton simultaneously for at least 2 secs All LEDs start flashing to confirm TSE-N / A.S. 17

18 Diagnostic mode Cancel alarm code vertical configuration Machine in diagnostic mode, programme selector in position 10 Press the upper two pushbuttons on the lefthand side simultaneously for at least 2 secs All LEDs start flashing to confirm TSE-N / A.S. 18

19 Diagnostic mode Exit to exit the diagnostic mode, switch OFF the appliance. then 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. 19

20 Alarms shown in the user mode Only 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) for example E41 or E43 will be shown as: alarm conditions E61, E83, or EA1 will not be shown to the user in any way Pause TSE-N / A.S. 20

21 Quick reading of alarm codes The last alarm can be read even if the machine is not in the diagnostic mode: Press START/PAUSE and any option pushbutton simultaneously for at least 2 seconds All LEDs extinguish an then show the full alarm code The sequence will be repeated as long as the 2 pushbuttons are kept depressed TSE-N / A.S. 21

22 Alarm code family 1: Water fill E11: water fill problems in wash cycle (time-out expired) E13: water leakage TSE-N / A.S. 22

23 Alarm code family 2: Draining E21: drain problems (time-out expired) E23: drain pump triac failure E24: drain pump triac sensing failure TSE-N / A.S. 23

24 Alarm code family 3: Pressure switch E33: incongruency between antiboil and 1 st level switches (longer than 3 secs) E35: water overfill (antiflood level switch open for more than 15 seconds) E36: antiboil sensing (AB_S) failure E37: 1 st level sensing (L1_S) failure E39: antiflood sensing (HV1_S) failure TSE-N / A.S. 24

25 Alarm code family 4: Door lock E41: door open (time-out expired) E42: door lock failure E43: door lock triac failure E44: closed door sensing failure E45: door lock triac sensing failure TSE-N / A.S. 25

26 Alarm code family 5: Motor circuit E51: motor triac short circuit E52: no tachometer signal from motor E53: motor triac sensing failure E54: motor (reversing) relay contact always closed TSE-N / A.S. 26

27 Alarm code family 6: Heating circuit E61: insufficient heating in wash cycle (time-out expired) NOT SHOWN IN USER MODE! E62: overheating during wash cycle (temp. on NTC > 88 C for more than 5 min.) E66: heating relay failure TSE-N / A.S. 27

28 Alarm code family 7: NTC sensor E71: NTC sensor failure (value out of limits) TSE-N / A.S. 28

29 Alarm code family 8: Programme selector E82: wrong selector reset position selection E83: wrong selector reading NOT SHOWN IN USER MODE! TSE-N / A.S. 29

30 Alarm code family 9: Configuration E93: machine configuration error E94: cycle configuration error E95: communication error between microprocessor and EEPROM E96: incongruence between circuit board configuration and hardware E97: incongruence between programme selector and cycle configuration table TSE-N / A.S. 30

31 Alarm code family A: DSP EA1: DSP (door self-positioning on top-loaded machines only) NOT SHOWN IN USER MODE! TSE-N / A.S. 31

32 Alarm code family B: Power supply EB1: power supply frequency out of limits EB2: power supply voltage too high EB3: power supply voltage too low TSE-N / A.S. 32

33 Component Diagnostic Connector Identification TSE-N / A.S. 33

34 Component Diagnostic J1 = Motor connector J1-1 to J1-2: full stator winding: 1-3 W (depending on type of motor) TSE-N / A.S. 34

35 Component Diagnostic J1 = Motor connector J1-1 to J1-3: half stator winding: W (on machines with > 1400 rpm) (depending on type of motor) TSE-N / A.S. 35

36 Component Diagnostic J1 = Motor connector J1-4 to J1-5: rotor winding: W (depending on type of motor) TSE-N / A.S. 36

37 Motors TSE-N / A.S. 37

38 Component Diagnostic J2, J6 = Door lock, Pressure switches BIMETAL PTC DOOR LOCK! J2-4 to J6-2: door lock bimetal PTC about 1 W TSE-N / A.S. 38

39 Component Diagnostic J2, J6 = Door lock, Pressure switches INSTANTANEOUS DOOR LOCK! J2-4 to J6-2: solenoid + PTC protector about 200 W) TSE-N / A.S. 39

40 Component Diagnostic J2, J6 = Door lock, Pressure switches INSTANTANEOUS DOOR LOCK! J2-5 to J6-2: bimetal PTC about 1 kw) TSE-N / A.S. 40

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 kw) TSE-N / A.S. 41

42 Component Diagnostic J2, J6 = Door lock, Pressure switches ALL DOOR LOCKS J2-1 to J6-2: door switch, open or closed TSE-N / A.S. 42

43 Component Diagnostic J2, J6 = Door lock, Pressure switches J2-1 to J2-2: 1 st level press. switch, open if water below 1 st level, closed if above TSE-N / A.S. 43

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 W) if above TSE-N / A.S. 44

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. 45

46 Component Diagnostic J3 = Solenoid Valves and Drain Pump J3-2 to J3-5: prewash solenoid valve about 3.75 kw TSE-N / A.S. 46

47 Component Diagnostic J3 = Solenoid Valves and Drain Pump J3-6 to J3-7: main wash solenoid valve about 3.75 kw TSE-N / A.S. 47

48 Component Diagnostic J3 = Solenoid Valves and Drain Pump J3-1 to J3-4: drain pump motor about 170 W TSE-N / A.S. 48

49 Component Diagnostic J5 = NTC and Tachogenerator J5-1 to J5-2: NTC sensor, about 6 kw at room temperature (see sensor characteristic for values at other temperatures) TSE-N / A.S. 49

50 NTC Characteristic TSE-N / A.S. 50

51 Component Diagnostic J5 = NTC and Tachogenerator J5-1 to J5-2: tachogenerator 65 to 540 W, depending on motor type. If motor is rotated by hand, a low AC voltage can be measured. TSE-N / A.S. 51

52 Motors TSE-N / A.S. 52

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. 53

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. 54