4 ewm1000 diagnostics - electrolux group service · pdf filetse-n / a.s. 3 february 2002...
TRANSCRIPT
1TSE-N / A.S. February 2002
EWM 1000
DIAGNOSTICS&
FAULTFINDING
2TSE-N / A.S. February 2002
Diagnostic modeAccess
To enter the diagnostic mode, press START/PAUSE and one option button simultaneously,and turn programme selector to the firstposition clockwise, until LEDs start flashing(position of pushbuttons is configurable, andmay vary).
3TSE-N / A.S. February 2002
Diagnostic modeAccess (vertical configuration)
To enter the diagnostic mode, press the uppertwo pushbuttons on the left-hand side simul-taneously (irrespective of their function), andturn programme selector to the first positionclockwise, until LEDs start flashing.
4TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 1
Checked functions:• User interface functionalityActuated components:• all LEDs light in sequence• if a pushbutton is depressed, thecorresponding LED lights, and buzzersounds if applicable
Conditions:• none
5TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 2
Checked functions:• Water fill main wash compartmentActuated components:• Door lock• Main wash solenoid valve
Conditions:• door closed• water level below safety (overflow) level• time-out 5 min
6TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 3
Checked functions:• Water fill prewash compartmentActuated components:• Door lock• Prewash solenoid valve
Conditions:• door closed• water level below safety (overflow) level• time-out 5 min
7TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 4
Checked functions:• Water fill fabric conditioner compartmt
Actuated components:• Door lock• Main wash and prewash solenoidvalves (simultaneously)
Conditions:• door closed• water level below safety (overflow) level• time-out 5 min
8TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 5
Not applicable to EWM1000 machines(checks 3rd solenoid valve)
9TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 6
Checked functions:• HeatingActuated components:• Door lock• Main wash solenoid valve if levelbelow first level• Heating element
Conditions:• door closed• water level above first level• water temperature below 80°C• time-out 10 min, or 90°C
10TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 7
Checked functions:• Tub leakage testActuated components:• Door lock• Main wash solenoid valve if levelbelow first level• Motor (55 rpm CW, 55 rpm CCW, 250rpm impulse with water in tub)Conditions:• door closed• water level above first level
11TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 8
Checked functions:• Draining• Spinning• Pressure switch level congruenceActuated components:• Door lock• Drain pump• Motor (650 rpm, then max spin speed)Conditions:• door closed• water level below antiboil level at start of spinmovement
12TSE-N / A.S. February 2002
Diagnostic modeComponent actuation 9
Not applicable to front-loaded machines(checks 3rd drum self-positioning )
13TSE-N / A.S. February 2002
Diagnostic modeReading the last alarm code
If an alarm code is stored in theEEPROM, this will be shown inhexadecimal code by 2 flashing LEDs:CYCLE END and START/PAUSE
14TSE-N / A.S. February 2002
Diagnostic modeReading the last alarm code
If an alarm code is stored in theEEPROM, this will be shown by2 flashing LEDs:
CYCLE END and START/PAUSE
15TSE-N / A.S. February 2002
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)
Øafter a pause of 2.5 secs, the sequence will be repeated
Diagnostic modeReading the last alarm code
HEX digit 1 2 3 4 5 6 7 8 9 A B F
Number of flashes 1 2 3 4 5 6 7 8 9 10 11 15
16TSE-N / A.S. February 2002
Diagnostic modeReading the last alarm code
An example: code E43LED CYCLE END LED
START/PAUSE
On / off Time(secs)
Value On / off Time(secs)
Value
0.4 0.4
0.41
0.41
0.4 0.4
0.42
0.42
0.4 0.4
0.43
0.43
0.4
0.44
2.5 Pause
3,3 Pause
17TSE-N / A.S. February 2002
Diagnostic modeCancel 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
18TSE-N / A.S. February 2002
Diagnostic modeCancel 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
19TSE-N / A.S. February 2002
Diagnostic modeExit
Øto exit the diagnostic mode, switch OFF 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)
20TSE-N / A.S. February 2002
Alarms shown in the user mode
ØOnly the alarm family (first digit of the code)
LED CYCLE END
On / off Time(secs) Value
0.4 1
0.4
0.4 2
0.4
0.4 3
0.4
0.4 40.4
2.5 Pause
is shown to the user by the flashing LED CYCLE END
Øfor example E41 or E43 will be shown as:
Øalarm conditions E61, E83, or EA1 will not be shown to the user in any way
21TSE-N / A.S. February 2002
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
22TSE-N / A.S. February 2002
Alarm code family 1:Water fill
ØE11: water fill problems in wash cycle (time-out expired)
ØE13: water leakage
23TSE-N / A.S. February 2002
Alarm code family 2:Draining
ØE21: drain problems (time-out expired)
ØE23: drain pump triac failure
ØE24: drain pump triac sensing failure
24TSE-N / A.S. February 2002
Alarm code family 3:Pressure switch
ØE33: incongruency between antiboil and 1st 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: 1st level sensing (L1_S) failure
ØE39: antiflood sensing (HV1_S) failure
25TSE-N / A.S. February 2002
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
26TSE-N / A.S. February 2002
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
27TSE-N / A.S. February 2002
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
28TSE-N / A.S. February 2002
Alarm code family 7:NTC sensor
ØE71: NTC sensor failure (value out of limits)
29TSE-N / A.S. February 2002
Alarm code family 8:Programme selector
ØE82: wrong selector reset position selection
ØE83: wrong selector reading NOT SHOWN IN USER MODE !
30TSE-N / A.S. February 2002
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
31TSE-N / A.S. February 2002
Alarm code family A:DSP
ØEA1: DSP (door self-positioning on top-loaded machines only) NOT SHOWN IN USER MODE !
32TSE-N / A.S. February 2002
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
33TSE-N / A.S. February 2002
Component Diagnostic Connector Identification
34TSE-N / A.S. February 2002
Component Diagnostic J1 = Motor connector
J1-1 to J1-2:full stator winding: 1 - 3 Ω
(depending on type of motor)
35TSE-N / A.S. February 2002
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)
36TSE-N / A.S. February 2002
Component DiagnosticJ1 = Motor connector
J1-4 to J1-5: rotor winding: 1.5 - 3 Ω
(depending on type of motor)
37TSE-N / A.S. February 2002
Motors
38TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
BIMETAL PTCDOOR LOCK !
J2-4 to J6-2:door lock bimetalPTC about 1 Ω
39TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
INSTANTANEOUSDOOR LOCK !
J2-4 to J6-2:solenoid +PTC protectorabout 200 Ω)
40TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
INSTANTANEOUSDOOR LOCK !
J2-5 to J6-2:bimetal PTCabout 1 kΩ)
41TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
INSTANTANEOUSDOOR LOCK !
J2-4 to J2-5:solenoid + PTC protector+ bimetal PTCabout 1.2 kΩ)
42TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
ALLDOOR LOCKS
J2-1 to J6-2:door switch,open or closed
43TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
J2-1 to J2-2:“1st” level press.switch, open ifwater below “1st”level, closed ifabove
44TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
J6-1 to J2-2:antiboil level press.switch, open if waterbelow this level,heating elementresistance (about30 Ω) if above
45TSE-N / A.S. February 2002
Component DiagnosticJ2, J6 = Door lock, Pressure switches
J2-3 to J2-6:antiflood levelpress. switch (noton all models !),normally closed
46TSE-N / A.S. February 2002
Component DiagnosticJ3 = Solenoid Valves and Drain Pump
J3-2 to J3-5:prewash solenoid valveabout 3.75 kΩ
47TSE-N / A.S. February 2002
Component DiagnosticJ3 = Solenoid Valves and Drain Pump
J3-6 to J3-7:main wash solenoid valveabout 3.75 kΩ
48TSE-N / A.S. February 2002
Component DiagnosticJ3 = Solenoid Valves and Drain Pump
J3-1 to J3-4:drain pump motorabout 170 Ω
49TSE-N / A.S. February 2002
Component Diagnostic J5 = NTC and Tachogenerator
J5-1 to J5-2:NTC sensor, about 6 kΩ at roomtemperature(see sensor characteristic forvalues at other temperatures)
50TSE-N / A.S. February 2002
NTC Characteristic
51TSE-N / A.S. February 2002
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.
52TSE-N / A.S. February 2002
Motors
53TSE-N / A.S. February 2002
Component DiagnosticJ4 = Provision for Door Pilot Lamp
J4-1 to J4-2:door pilot lamp(only on few models !)
54TSE-N / A.S. February 2002
Component DiagnosticAnd J7 ??
?
J7 is the external serial interface:
It may be used to connect the circuit board to acomputer, and run configuration or diagnosticprogrammes from there