Function; The Door Lock Locks The Door - Electrolux W365H Service Manual

Service
Manual

Function

The door lock locks the door

When the door is closed (closed door lock switch
Fig.
S3), the programme unit may request door
15
locking by applying a voltage of 200-240 V on the
door lock controller A31 input X92.
The following check is made by the A31 card
prior to locking of the door:
• No water in drum - input X93 from level
guard B2 is closed = 0 V
• Motor not engaged - input X94 from motor
control U1 open = 5 V
• Drum not rotating - pulse frequency on input
X95 from rotation sensor B3 less than 3 Hz.
When the above conditions are met, the card
A31 outputs a closing pulse on output X96 to the
door lock actuator/coil, which then locks the door.
The micro switches S4a and S4b in the actuator/
door lock are closed when the door is locked.
These micro switches feed voltage to:
• The output relays on the programme unit
card. The relays control the machine's drain
and water valves as well as heater switch-on.
• Interlock signal for motor control (input
X302) that releases the motor start prevention
state.
Programme operation is now possible.
438 9150-01/06
04.10
29. Door and door lock
15
Door lock
X92
control
A31
X93 X95 X94 X96
Motor
Level
control
X304
guard
U1
B2
M1
Rotation sensor B3
(tacho)
29
Programme
X31
unit A1
X37 X30
X302
Door lock
A41
5931
13