Electrolux W3300H Exacta - Function; Front Control Unit

21. Control unit
21
4
438 9149-61/02
01.42
Service
Manual
2
3
Fig.
2
Fig.
3
Function
Front control unit
Programme unit A1
The programme unit is electronically controlled
and has seven fixed programmes and four
optional functions. To simplify maintenance and
troubleshooting, the programme unit features
special service and self-diagnostic functions.
The programme unit is described in detail in
section 23. Programme unit.
Level guard B2
Control of the water level and turning of the drum
are controlled with a backup guard, to ensure
that the door will not open with water in the drum
or when the drum rotates.
Apart from a level guard on the programme unit
card, there is a level guard B2, connected to the
door lock control A31. This card controls door
locking action as well as the level and drum rpm
speed.
Transformer T10
Low-voltage transformer that supplies power to
the programme unit.
Using the shorting pins on the PCB, the
transformer is switchable among four different
voltages.
Fig.
2
Fig.
2
5183 5186
5199
Programme unit A1
Level guard B2
Transformer T10
1,75 V 1,75 V 14,5 V 13,5 V
7 6 5 4 3 2 1
X172
120 208 230 240
Voltage supply
X178
Voltage supply
shorting pin