Electrolux FAVORIT 8081 Service Manual

SERVICE MANUAL

© AEG Hausgeräte GmbH

Muggenhofer Straße 135
D-90429 Nürnberg
Germany

Fax [phone]
TSE - N

Ausgabe: 11.98
Edition: 11.98

Publ.-Nr.:

599 50 66 51

685

Dishwasher

Fully electronic dishwasher

FAVORIT 8081

EN

DISHWASHER

Dishwasher

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Technical Data

This dishwasher has basicly the same construction as the range 1995, like shown on the pages
292 1372 01 - 21. But it has a bigger electronic with automatic programes.

In the automatic programes the pollution (mist) of the rinse water is measured during the pre­rinse and the intermediate rinse. If no pollution is recognized the water of the pre-rinse is used
during the mainwash. A second intermediate rinse will not be executed.

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Technical Data

turbit-sensor

The function of the turbit-sensor is only activ by programmes "AUTO 65" and "AUTO BIO 50"

Function:

The input voltage of the turbit-sensor can be between 6 V and 11,4 V (rail connections output
electronic 4 and 6).
The output voltage should always be 4,3 V (rail connections output electronic 1 and 6). That's
voltage value for clean water.
Should the turbit-sensor be dirty after a long period of use, the input voltage corresponding to
the turbit with automatically engage the electronical output according to the output voltage until it
has reched 4,3 V. This calibration occurs in final rinse.
Should the maximum input voltage of 11,4 V be reached, then it couldn't reach the output­voltage of 4,3 V - 60 mV.
The error will be recorded "C5" in the memory. Should the
output-voltage in pre-wash be under 3 V and in intermediate rinsing
under 3,8 V, then we have turbit water in the tank.
In the service the turbit-sensor test program will not be
calibrated for medium water, but with air (3,5 V).
That corresponds to medium water (4,3 V).

4,3V

Output voltage intermediate rinsing:

turbit water

4,3V3V

Output voltage pre-wash:

turbit water clean water

3,8V

clean water

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Technical Data

Flow water heater
Heating power: 3125W
Heating steps:
Pre-wash (Intensiv) : distributor position on upper sprayarm, distributor out of power,

heating till 40 °C,
then distributor power on.

Washing: distributor position on upper sprayarm, distributor out of power,

heating till 50 °C,
distributor power on (1 min),
distributor position on upper sprayarm, distributor out of power,
heating till 60 °C (ECO-Program),

65 °C (Normal-Program),

70 °C (Intensiv-Program),
distributor power on,
washing predominant on lower sprayarm.

Final rinse: distributor position on upper sprayarm, distributor out of power,

heating till 50 °C,
dosage rinse aid,
distributor power on,
dosage rinse aid,
distributor position on upper sprayarm, distributor out of power,
heating till 70 °C,
distributor power on,
washing predominant on lower sprayarm.

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Technical Data

Autoprogram "AUTO 65° and AUTO BIO 50°"

excample for program without sensorlogic (full load):

turbit

turbit

no turbit

turbit

no turbit

no turbit

washing

washing

final rinse

extraintermediate

rinsing of

softener

upon

regenerating

of softener

4 min

pre-wash

6 min 3 min 5 min

1. and 2. turbitidy

3. and 4.

40 sec

calibrate

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Technical Data

Autoprogram "AUTO 65° and AUTO BIO 50°"

Example for program with sensorlogic (half load):

no turbit

turbit noticed

2000 U/min

2000 U/min

intermediate

rinsing

rinsing of

softener

upon request

4 min

pre-wash

6 min

1. and 2.

turbitidy measurement

washing

regenerating

of softener

upon request

40 sec

Calibrate

on 4,3V

final rinse

with

rinse aid

half loading

heating 50°C

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Technical Data

LED-blockade only upper sprayarm

The LED-blockage is only over the upper sprayarm.
The LED-blockage for lower sprayarm is removed.

Function:

The inspection is running during the recycling pump in function.
The distributor-position on upper sprayarm.
The position contact for distributor b65 is open.
After change the upper sprayarm will be controlled within 40 sec.
During this 40 sec. should be existing minimal 4 impulse.
If that is not the case, an error will be recorded as "Cu" in the memory.
The LED sprayarm is on and the buzzer is going on.

LED-water inlet

The reed relay for water inlet is removed.

Function:

The inspect of LED-water inlet occurs about the pressure switch, i. e. the level isn't reached
within 60 sec, then LED-water inlet is going on.
An Error will be recorded as "C1" in the memory, the LED "water" is going on.

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Technical Data

The fully electronic dishwasher has the following service functions:

1. Heater element programming

2. fault display

3. fault memory

4. LED-test

5. individual component control

6. service test programme

1. Heater element programming

- Press buttons 4 and 7 simultaneously and switch on with button 1
(Refer to paragraph 3. 'Fault memory' for the pushbutton numbering)

- Press button 7 for choosing the heater power
(after 6 seconds the display is switched off and the power value is stored)

2. Fault display

If the electronic detects a fault during the washing programme, it is displayed by flashing
LEDs. By pressing the programme button next to the LED, the programme continues and
the fault display is cancelled.

The lower 5 LEDs of the programme progress indicator are used for the fault display.
On dishwashers with multi-function display the fault is also indicated on that display.

LED

Drying

LED

End

LED

Washing

LED

Pre-rinsing

Multifunktion
Display

Heater power ET-No.

X X X X 0 1 3125 W

1900 W + 1240 W

646 174 530 16 A

X X X 0 2 2520 W 646 174 531 13 A

X X X 0 3 2035 W 646 174 532 10 A

X X 0 4 1240 W

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Technical Data

LED Washing

LED End

LED Drying

LED Final Rinsing

LED Rinsing

8 4 2 1

Multifunction
Display

Fault /
Component

What is the behaviour of the
dishwasher with the indicated
fault?

How is the fault sensed by the
electronic module?

X CO Electronic module Program interruption Data transfer between input module

and power module faulty

X Rest program

duration C1 in
fault memory

no water inlet Program interruption. The level isn’t reached within 60 sec.

X C2 Drain pump Program interruption The drain pump is triggered but the

pressure switch doesn’t reset after 115
sec.

X X C3 Water in bottom tub

Interruption of drain
pump

Module left: Triac
doesn’t reset

Program interruption until reset of
overflow switch

Voltage measurement at Triac output

X C4 Regenerator valve

interruption
Module left: Triac

doesn’t reset

Program keeps on running Voltage measurement at Triac output.

Attention:
With softeners supplied with two
regenerator valves a winding
interruption is not indicated

X X X C7

only in fault
memory

Heater
Heater relay
Safety thermostat

Program keeps on running
without heater

Temperature rising rate < 0,6 K/min
during heating steps

X C8

only in fault
memory

NTC Temperature
sensor
Interruption / short
circuit

Program keeps on running
without heater

Voltage measurement at NTC
temperature sensor

X X C9

only in fault
memory

Tacho generator
faulty

Program keeps on running;
Recycling pump on nominal
speed

Electronic module does not detect
tacho information

X X CA Short circuit in Triac

for recycling pump
on left module

Program is skipped up to end
Draining within 300 sec.

Module detects tacho information while
Triac is not triggered

X X X Cb

only in fault
memory

Rotary switch faulty

Module left: Triac
doesn’t switch off

Program keeps on running

Program keeps on running
without heating steps

The rotary switch contact is closed
when the water enters the upper spray
arm. If the contact doesn’t switch, the
module detects this fault type.
Alltough the distriputer isn’t controll
high, a changing signal is recognized
on contact b65 (short circuit).

X X Cc Fan "Drying"

interrupted
Module left: Triac
doesn’t switch off

Program keeps on running Voltage measurement at Triac output

X X X Cd Wax drive for air

flap (Drying)
interrupted
Module left: Triac
doesn’t switch off

Program is skipped up to end;
Draining within 300 sec.

Voltage measurement at Triac output

X X X CE Micro processor

"crashed"

Program is skipped up to end;
Switch appliance off and restart
program

Watchdog Microcomputer Reset;
Microcomputer is "crashed" and works
no more

n o n Cu upper sprayarm

blocked

LED sprayarm on, buzzer on Hall-Sensor doesn’t get

4 Impulse/ 40sec

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Technical Data

- Whilst pressing buttons 4 and 7 simultaneously, switch on with button 1

- In display "d2"

- Press button 5 / the last occuring fault is displayed

- Press button 5 / the penultimately occurring fault is displayed etc

4. LED-Test / Cancelling of fault memory

- Whilst pressing buttons 4 and 7 simultaneously, switch on with button 1

- In display "d2"

- Press button 3 / all LEDs illuminate, the fault memory is deleted

5. Test of individual components

- Whilst pressing buttons 2 and 3 simultaneously and switch on with button 1

- In display "d1"

Button 1 On Button 4 recycling pump
Button 2 admission valve Button 5 rotary slide Button 8 Fan + flap
Button 3 regeneration valve Button 6 drain pump Button 9 detergent
dispenser
20 sec after pushing the latest button the program is quit

6. Service test programme

- Whilst pressing buttons 4 and 7 simultaneously, switch on with button 1

QUICK

PRE-WASH

ON

AUTO

NORMAL

INTENSIV

NORMAL

AUTO

ECO

3. Fault memory

The latest three faults are stored and can be called up with the programme selection

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Technical Data

Program sequence
indicator

Function Option

Rotary switch until position upper spray arm

(step independant)

draining until reset pos ition pressure

switch

draining 30 seconds

turbit-sensor calibrated air UB=3,5V

Pre rinse

filling until switch position pressure

switch

filling 3 seconds

draining until reset pos ition pressure

switch

draining 30 seconds

Rotary switch until position upper spray arm

filling until switch position pressure

switch

filling 19,5 Sekunden

Washing

filling
recycling

until switch position pressure
sensor

Detergent cover
recycling

5 seconds

heating
recycling
Rotary switch

65 °C

draining until reset pos ition pressure

switch

draining 30 seconds

Regenerator valve
Fan
Fan flap

120 seconds

Final rinse

Regenerator valve
Fan
Fan flap
heating

30 seconds

Regenerator valve
Fan
Fan flap

120 seconds

Regenerator valve
Fan
Fan flap

30 seconds

draining 30 seconds

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Technical Data

NTC-Temperaturfühler
Temperature sensor NTC-resistor

Tem peratur/Widerstand °C/Ω20 °C / 6032

Ω

temperature/resistor 25 °C / 4829

Ω

(nur bei vollelektron. Geschirrspüler) 30 °C / 3891

Ω

(only for fully electronic dishwasher) 40 °C / 2573

Ω

50 °C / 1741

Ω

55 °C / 1444

Ω

60 °C / 1204

Ω

65 °C / 1009

Ω

70 °C / 849

Ω

Elektronische R egenerierdosierung
Electronic regeneration dosage

D ie elektronische Regenerierdosierung ist 10-stufig verstellbar.
The electronic regeneration dosage can be adjusted to 10 different settings.

o Die Taste "+" und "-" gleichzeitig drücken
o press the "+" and "-" buttons next to the display simultaneously
o I m Display erscheint die eingestellte Stufe H 0 - H9
o the display show s the setting H 0 - H9
o M it den Tasten "+" oder "-" kann die Stufe verändert w erden
o the setting can be ajusted w ith the "+" or "-" button

Härtebereich Härtebere ich
water hardness wa ter ha rdness
Stufe D F F üll menge Sa lz
step capacity Salt

H 0 - 4 °d - 7 °f regeneration
H 1 - 12 °d - 21 °f > 165 l
H 2 - 16 °d - 29 °f > 113 l
H 3 - 20 °d - 36 °f > 81 l
H 4 - 24 °d - 43 °f > 69 l 110 g für
H 5 - 28 °d - 50 °f > 57 l eine Regenerierung
H 6 - 32 °d - 57 °f > 45 l for one regeneration cycle
H 7 - 40 °d - 71 °f > 33 l
H 8 - 50 °d - 89 °f > 21 l
H 9 - 70 °d - 125 °f > 10 l