Electrolux 225EN Service Manual

SERVICE MANUAL

WASHING

WASHING MACHINES

WITH TIMERS

12428840.. / 12428841..

©ELECTROLUX ZANUSSI S.p.A.
Corso Lino Zanussi, 30
I - 33180 PORCIA (ITALY)
Tel [phone]
Fax [phone]

Pubblication No.

599 33 62-25/9

980820

EN/SERVICE/EB

FUNCTIONS:
VD50 - VD50J - VD51
VD52 - VD53 - VD53J

ELBI

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INDEX

General characteristics page 4/17

Operating principles page 5/17

Safety features page 7/17

Washing programmes page 8/17

Key functions page 12/17

Timer diagram page 13/17

Basic circuit diagram page 14/17

Troubleshooting page 16/17

Timer connectors page 17/17

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GENERAL FEATURES

The VD50, VD50J, VD51, VD52, VD53 and VD53J timers manufactured by ELBI are used in certain
washing machine models with spin speeds from 600 rpm to 1000 rpm.
These timers consist of two main components: an electromechanical timer and an electronic control board.
The electronic control board is connected directly by soldering to the timer connectors.

1. Electronic control board

2. Microprocessor

3. Timer motor

4. Electromechanical timer

ON/OFF button -"push-pull" type on timer knob (timer code - 12428840.. )

- separate switch (timer code - 1242884 1..)

Tub - stainless steel or carboran

Water fill - cold water

Type of motor - commutator

Water level control - two-level pressure switch (models with adjustable thermostat)

- single-level pressure switch (models with fixed-temperature thermostats)

Spin speeds - 600 rpm - 1000 rpm

Heating element - 1950 W

Temperature control - by adjustable thermostat (0 - 90°C)

- fixed-temperature thermostats

The characteristics of the various types of timer are shown in the table below.

TIMER POSITION OF

PRESSURE SWITCH

TYPE OF WASH N° RINSES IN COTTON

PROGRAMMES

PRESSURE CHAMBER

VD50

VD50J

VD51

VD52

VD53

VD53J

on filter body traditional 4

near tub jetsystem 4

near tub traditional 4

on filter body traditional 3

near tub traditional 3

near tub jetsystem 3

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OPERATING PRINCIPLES

WASHING MACHINE COMPONENTS

DOOR LOCK

ELECTRIC VALVE
PRESSURE SWITCH
PUMPS

HEATING ELEMENT
THERMOSTATS

MOTOR
SUPPLY

OPERATION
CODES

M

MOTOR

G

ELECTROMECHANICAL TIMER

The timer by closing a series of contacts, transmits to the electronic control board the codes which identify
the operations to be performed at each timer step.

The electronic control board performs the following functions:

- controls the washing programmes and their relative options

- via a triac it powers the timer motor, thus advancing the timer (the voltage is supplied in the form of
pulses)

- via a second triac it powers the drum motor and controls its spin speed according to a signal received by
the tachometric generator. The direction of rotation is controlled by the closure of the contacts of two
relays.

- controls the closure of the pressure switch contacts during the fill and drain phase.

All other electromechanical components of the washing machine are powered by the timer contacts.

The duration of the heating phases is fixed; the thermostat (if fitted) serves only to reduce the temperature
for the selected programme.

ELECTRONIC

CONTROL

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CONFIGURATION OF TIMER FUNCTIONS

The various types of timer, and thus its functions, are configured according to the wiring connectors.

1 Electronic control board

JC Connector which determines the timer functions:

VD50 - VD50J - VD51 if there is no jumper between X2.1 and X2.2
VD52 - VD53 - VD53J if a jumper is fitted between X2.1 and X2.2

JH This connector is used in conjunction with the "rinse hold" button.

If there is no jumper between H2.1 and H2.2, the "rinse hold" option can be selected (by
pressing the button) in cycles for SYNTHETICS, DELICATES and WOOL.
If a jumper is inserted between H2.1 and H2.2, this function is enabled at the end of the rinses
in COTTON cycles, too.

JA - JB Depending on the type of model, these connectors determine the transmission ratio between

the motor pulley and the drum pulley, and thus the speed of the final spin cycle:

JB JA Ratio Max. speed

0 0 1 / 18 600

0 1 1 / 18 800

1 0 1 / 14 900

1 1 1 / 14 1000

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