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6 ELECTRICAL COMPONENTS AND FUNCTIONS
6.1 EDW2503 Electronic control system
The EDW2503 electronic control system consists of:
•
One central display board with LCD and uses a separate ON/OFF button.
•
One main board (fig. A) placed in the lower part of the appliance, anchored to the base by a
plastic support (as for appliances "DIVA" EDW2000/2003/2500).
The "Talkie" version features also an electronic board, placed under the control panel and contained in
a plastic box, specific for the voice control and connected electrically to the speaker positioned on the inner
door.
6.1.1
Functions performed by the mother board
SENSORS
Acquires cycle programming and commands through the input and output boards.
Powers all the electrical components (solenoids, wash pump, detergent/rinse-aid dispenser, drain
pump, heating element, fan motor)
Controls the temperature of the wash water using a signal from an NTC sensor, and controls the
speed of the wash pump using a signal from a tachometric generator.
Monitors the pressure switches and the rinse-aid / salt sensors.
6.1.2
Memories contained in the electronic control system
External serial
port
ROM
Asynchronous
The main board is equipped with an EEPROM that is external to the microprocessor and which is
used to store data on machine configuration, programming for the cycle, and status of the cycle in case of a
power failure or alarm.
The configuration data is programmed at the factory by a computer with a DAAS interface. This
data determines the operation of the appliance (number and types of programmes, options, LEDs, etc).
INPUT AND OUTPUT BOARDS
LEDs
Buttons
MAIN BOARD
µP
Internal serial
RAM
Synchronous
fig.A
Display
µP
(Buzzer)
EEPROM
port
20
ELECTRIC
LOADS
Power failure and
machine status
Configuration of
appliance
Description for the
cycle
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