The Door Lock Unlocks The Door - Electrolux W365H Service Manual

29

The door lock unlocks the door

The programme unit requests door unlocking by
Fig.
applying 0 V on input X92 of the door lock
16
controller.
The following check is made prior to unlocking of
the door:
• No water in drum - input X93 from level
guard B2 is closed = 0 V
• Motor not engaged - input X94 from motor
controller U1 open = 5 V
• Drum not turning - pulse frequency on input
X95 from rotation sensor B3 is less than 3 Hz.
When the above conditions are met, the door
lock controller outputs an opening pulse on
output 96 to the door lock actuator/coil, which
then unlocks the door. Micro switches S4a and
S4b now interrupt the actuator/door lock and the
I/O card 1 relays lose all voltage to prevent the
motor from starting (interlock signal on motor
controller input X302). The drain and water
valves of the machine are now disabled and the
heater and motor cannot be switched on.
14
29. Door and door lock
16
Door lock
X92
control
A31
X93 X94
X95 X96
Motor
Level
control
X304
guard
U1
B2
M1
Rotation sensor B3
(tacho)
Service
Manual
Programme
X31
unit A1
X37
X30
X302
Door lock
A41
5931
438 9150-01/06
04.10